/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 16:00:49,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 16:00:49,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 16:00:49,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 16:00:49,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 16:00:49,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 16:00:49,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 16:00:49,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 16:00:49,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 16:00:49,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 16:00:49,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 16:00:49,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 16:00:49,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 16:00:49,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 16:00:49,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 16:00:49,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 16:00:49,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 16:00:49,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 16:00:49,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 16:00:49,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 16:00:49,386 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2021-03-11 16:00:49,434 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 16:00:49,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 16:00:49,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 16:00:49,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 16:00:49,438 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 16:00:49,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 16:00:49,438 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 16:00:49,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 16:00:49,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 16:00:49,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 16:00:49,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 16:00:49,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 16:00:49,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 16:00:49,440 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 16:00:49,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 16:00:49,440 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 16:00:49,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 16:00:49,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 16:00:49,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 16:00:49,440 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 16:00:49,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 16:00:49,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 16:00:49,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 16:00:49,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 16:00:49,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 16:00:49,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 16:00:49,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 16:00:49,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 16:00:49,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 16:00:49,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 16:00:49,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 16:00:49,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 16:00:49,778 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 16:00:49,779 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 16:00:49,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl [2021-03-11 16:00:49,781 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl' [2021-03-11 16:00:49,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 16:00:49,825 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 16:00:49,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 16:00:49,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 16:00:49,826 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 16:00:49,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:00:49" (1/1) ... [2021-03-11 16:00:49,841 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:00:49" (1/1) ... [2021-03-11 16:00:49,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 16:00:49,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 16:00:49,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 16:00:49,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 16:00:49,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:00:49" (1/1) ... [2021-03-11 16:00:49,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:00:49" (1/1) ... [2021-03-11 16:00:49,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:00:49" (1/1) ... [2021-03-11 16:00:49,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:00:49" (1/1) ... [2021-03-11 16:00:49,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:00:49" (1/1) ... [2021-03-11 16:00:49,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:00:49" (1/1) ... [2021-03-11 16:00:49,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:00:49" (1/1) ... [2021-03-11 16:00:49,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 16:00:49,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 16:00:49,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 16:00:49,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 16:00:49,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:00:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 16:00:49,938 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-11 16:00:49,939 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 16:00:49,939 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 16:00:49,939 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-11 16:00:49,939 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-11 16:00:49,939 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-11 16:00:49,939 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 16:00:49,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 16:00:49,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 16:00:49,940 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-11 16:00:49,940 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-11 16:00:49,940 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-11 16:00:49,940 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-11 16:00:49,940 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-11 16:00:49,940 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-11 16:00:49,940 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-03-11 16:00:49,941 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-03-11 16:00:49,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-03-11 16:00:49,941 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-03-11 16:00:49,941 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-03-11 16:00:49,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-03-11 16:00:49,942 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 16:00:50,136 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 16:00:50,136 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 16:00:50,137 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 04:00:50 BoogieIcfgContainer [2021-03-11 16:00:50,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 16:00:50,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 16:00:50,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 16:00:50,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 16:00:50,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:00:49" (1/2) ... [2021-03-11 16:00:50,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2176b8 and model type barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 04:00:50, skipping insertion in model container [2021-03-11 16:00:50,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 04:00:50" (2/2) ... [2021-03-11 16:00:50,142 INFO L111 eAbstractionObserver]: Analyzing ICFG barrier.wvr.bpl [2021-03-11 16:00:50,146 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 16:00:50,147 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 16:00:50,149 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 16:00:50,150 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 16:00:50,244 INFO L149 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2021-03-11 16:00:50,257 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-03-11 16:00:50,286 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 16:00:50,286 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 16:00:50,286 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 16:00:50,286 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 16:00:50,286 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 16:00:50,286 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 16:00:50,287 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 16:00:50,287 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 16:00:50,310 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 16:00:50,318 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 65 transitions, 202 flow [2021-03-11 16:00:50,327 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 65 transitions, 202 flow [2021-03-11 16:00:50,329 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 65 transitions, 202 flow [2021-03-11 16:00:50,382 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2021-03-11 16:00:50,382 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-11 16:00:50,390 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 53 events. 4/53 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 109 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-03-11 16:00:50,392 INFO L116 LiptonReduction]: Number of co-enabled transitions 1336 [2021-03-11 16:00:50,829 INFO L131 LiptonReduction]: Checked pairs total: 3396 [2021-03-11 16:00:50,830 INFO L133 LiptonReduction]: Total number of compositions: 15 [2021-03-11 16:00:50,838 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 66 places, 51 transitions, 174 flow [2021-03-11 16:00:50,953 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1604 states, 1602 states have (on average 3.447565543071161) internal successors, (5523), 1603 states have internal predecessors, (5523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:00:50,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 1604 states, 1602 states have (on average 3.447565543071161) internal successors, (5523), 1603 states have internal predecessors, (5523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:00:50,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:00:50,977 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:00:50,977 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:00:50,978 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:00:50,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:00:50,982 INFO L82 PathProgramCache]: Analyzing trace with hash -2069709608, now seen corresponding path program 1 times [2021-03-11 16:00:50,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:00:50,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947123236] [2021-03-11 16:00:50,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:00:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:00:51,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:51,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:00:51,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:51,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-11 16:00:51,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:51,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:00:51,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:00:51,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947123236] [2021-03-11 16:00:51,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:00:51,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 16:00:51,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215616826] [2021-03-11 16:00:51,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 16:00:51,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:00:51,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 16:00:51,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 16:00:51,118 INFO L87 Difference]: Start difference. First operand has 1604 states, 1602 states have (on average 3.447565543071161) internal successors, (5523), 1603 states have internal predecessors, (5523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:00:51,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:00:51,179 INFO L93 Difference]: Finished difference Result 1283 states and 4250 transitions. [2021-03-11 16:00:51,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 16:00:51,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:00:51,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:00:51,204 INFO L225 Difference]: With dead ends: 1283 [2021-03-11 16:00:51,204 INFO L226 Difference]: Without dead ends: 1283 [2021-03-11 16:00:51,205 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 16:00:51,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-03-11 16:00:51,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1283. [2021-03-11 16:00:51,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1282 states have (on average 3.3151326053042123) internal successors, (4250), 1282 states have internal predecessors, (4250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:00:51,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 4250 transitions. [2021-03-11 16:00:51,328 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 4250 transitions. Word has length 34 [2021-03-11 16:00:51,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:00:51,328 INFO L480 AbstractCegarLoop]: Abstraction has 1283 states and 4250 transitions. [2021-03-11 16:00:51,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:00:51,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 4250 transitions. [2021-03-11 16:00:51,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:00:51,333 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:00:51,333 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:00:51,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 16:00:51,334 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:00:51,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:00:51,336 INFO L82 PathProgramCache]: Analyzing trace with hash -874435024, now seen corresponding path program 2 times [2021-03-11 16:00:51,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:00:51,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235105996] [2021-03-11 16:00:51,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:00:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:00:51,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:51,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:00:51,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:51,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-11 16:00:51,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:51,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:00:51,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:00:51,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235105996] [2021-03-11 16:00:51,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:00:51,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 16:00:51,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370530248] [2021-03-11 16:00:51,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 16:00:51,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:00:51,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 16:00:51,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 16:00:51,435 INFO L87 Difference]: Start difference. First operand 1283 states and 4250 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:00:51,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:00:51,473 INFO L93 Difference]: Finished difference Result 1027 states and 3266 transitions. [2021-03-11 16:00:51,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 16:00:51,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:00:51,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:00:51,479 INFO L225 Difference]: With dead ends: 1027 [2021-03-11 16:00:51,480 INFO L226 Difference]: Without dead ends: 1027 [2021-03-11 16:00:51,480 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 16:00:51,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2021-03-11 16:00:51,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1027. [2021-03-11 16:00:51,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 1026 states have (on average 3.1832358674463936) internal successors, (3266), 1026 states have internal predecessors, (3266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:00:51,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 3266 transitions. [2021-03-11 16:00:51,511 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 3266 transitions. Word has length 34 [2021-03-11 16:00:51,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:00:51,511 INFO L480 AbstractCegarLoop]: Abstraction has 1027 states and 3266 transitions. [2021-03-11 16:00:51,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:00:51,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 3266 transitions. [2021-03-11 16:00:51,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:00:51,514 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:00:51,514 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:00:51,515 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 16:00:51,515 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:00:51,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:00:51,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1683891584, now seen corresponding path program 3 times [2021-03-11 16:00:51,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:00:51,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723140178] [2021-03-11 16:00:51,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:00:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:00:51,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:51,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:00:51,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:51,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:00:51,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:51,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:00:51,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:51,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:51,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:51,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:51,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:51,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:00:51,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:51,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:00:51,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:51,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:51,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:51,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:51,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:51,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:51,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:51,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:51,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:51,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:51,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:51,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:51,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:51,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:51,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:51,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:51,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:51,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:51,918 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:00:51,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:00:51,963 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:00:51,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:00:51,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723140178] [2021-03-11 16:00:51,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:00:51,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:00:51,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148692258] [2021-03-11 16:00:51,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:00:51,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:00:51,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:00:51,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:00:51,969 INFO L87 Difference]: Start difference. First operand 1027 states and 3266 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:00:53,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:00:53,617 INFO L93 Difference]: Finished difference Result 1336 states and 4162 transitions. [2021-03-11 16:00:53,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 16:00:53,617 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:00:53,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:00:53,624 INFO L225 Difference]: With dead ends: 1336 [2021-03-11 16:00:53,624 INFO L226 Difference]: Without dead ends: 1311 [2021-03-11 16:00:53,625 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 952.1ms TimeCoverageRelationStatistics Valid=168, Invalid=1554, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 16:00:53,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2021-03-11 16:00:53,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1069. [2021-03-11 16:00:53,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1068 states have (on average 3.157303370786517) internal successors, (3372), 1068 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:00:53,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 3372 transitions. [2021-03-11 16:00:53,662 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 3372 transitions. Word has length 34 [2021-03-11 16:00:53,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:00:53,662 INFO L480 AbstractCegarLoop]: Abstraction has 1069 states and 3372 transitions. [2021-03-11 16:00:53,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:00:53,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 3372 transitions. [2021-03-11 16:00:53,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:00:53,665 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:00:53,665 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:00:53,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 16:00:53,665 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:00:53,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:00:53,666 INFO L82 PathProgramCache]: Analyzing trace with hash -865452982, now seen corresponding path program 4 times [2021-03-11 16:00:53,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:00:53,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858009965] [2021-03-11 16:00:53,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:00:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:00:53,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:53,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:00:53,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:53,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:00:53,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:53,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:00:53,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:53,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:53,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:53,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:53,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:53,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:00:53,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:53,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:00:53,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:53,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:53,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:53,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:53,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:53,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:53,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:53,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:53,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:53,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:53,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:53,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:53,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:53,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:53,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:53,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:53,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:53,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:53,924 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:00:53,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:00:53,959 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:00:53,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:53,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:00:53,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858009965] [2021-03-11 16:00:53,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:00:53,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:00:53,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113745437] [2021-03-11 16:00:53,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:00:53,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:00:53,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:00:53,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:00:53,964 INFO L87 Difference]: Start difference. First operand 1069 states and 3372 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:00:55,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:00:55,127 INFO L93 Difference]: Finished difference Result 1314 states and 4095 transitions. [2021-03-11 16:00:55,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-11 16:00:55,130 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:00:55,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:00:55,137 INFO L225 Difference]: With dead ends: 1314 [2021-03-11 16:00:55,137 INFO L226 Difference]: Without dead ends: 1281 [2021-03-11 16:00:55,138 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 660.5ms TimeCoverageRelationStatistics Valid=147, Invalid=1335, Unknown=0, NotChecked=0, Total=1482 [2021-03-11 16:00:55,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-03-11 16:00:55,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1065. [2021-03-11 16:00:55,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1064 states have (on average 3.156954887218045) internal successors, (3359), 1064 states have internal predecessors, (3359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:00:55,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 3359 transitions. [2021-03-11 16:00:55,169 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 3359 transitions. Word has length 34 [2021-03-11 16:00:55,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:00:55,169 INFO L480 AbstractCegarLoop]: Abstraction has 1065 states and 3359 transitions. [2021-03-11 16:00:55,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:00:55,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 3359 transitions. [2021-03-11 16:00:55,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:00:55,173 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:00:55,173 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:00:55,174 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 16:00:55,174 INFO L428 AbstractCegarLoop]: === Iteration 5 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:00:55,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:00:55,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1554184064, now seen corresponding path program 5 times [2021-03-11 16:00:55,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:00:55,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738465999] [2021-03-11 16:00:55,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:00:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:00:55,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:55,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:00:55,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:55,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:00:55,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:55,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:00:55,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:55,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:55,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:55,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:55,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:55,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:00:55,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:55,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:00:55,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:55,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:55,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:55,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:55,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:55,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:55,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:55,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:55,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:55,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:55,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:55,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:55,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:55,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:55,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:55,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:55,471 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:00:55,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:00:55,493 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:00:55,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:00:55,517 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:00:55,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:55,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:00:55,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738465999] [2021-03-11 16:00:55,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:00:55,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:00:55,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991792919] [2021-03-11 16:00:55,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:00:55,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:00:55,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:00:55,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:00:55,522 INFO L87 Difference]: Start difference. First operand 1065 states and 3359 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:00:56,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:00:56,594 INFO L93 Difference]: Finished difference Result 1280 states and 4005 transitions. [2021-03-11 16:00:56,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-11 16:00:56,595 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:00:56,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:00:56,601 INFO L225 Difference]: With dead ends: 1280 [2021-03-11 16:00:56,601 INFO L226 Difference]: Without dead ends: 1239 [2021-03-11 16:00:56,602 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 609.6ms TimeCoverageRelationStatistics Valid=140, Invalid=1266, Unknown=0, NotChecked=0, Total=1406 [2021-03-11 16:00:56,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2021-03-11 16:00:56,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1061. [2021-03-11 16:00:56,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1060 states have (on average 3.1566037735849055) internal successors, (3346), 1060 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:00:56,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 3346 transitions. [2021-03-11 16:00:56,627 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 3346 transitions. Word has length 34 [2021-03-11 16:00:56,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:00:56,628 INFO L480 AbstractCegarLoop]: Abstraction has 1061 states and 3346 transitions. [2021-03-11 16:00:56,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:00:56,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 3346 transitions. [2021-03-11 16:00:56,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:00:56,630 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:00:56,630 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:00:56,631 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 16:00:56,631 INFO L428 AbstractCegarLoop]: === Iteration 6 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:00:56,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:00:56,631 INFO L82 PathProgramCache]: Analyzing trace with hash -902964082, now seen corresponding path program 6 times [2021-03-11 16:00:56,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:00:56,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719865992] [2021-03-11 16:00:56,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:00:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:00:56,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:56,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:00:56,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:56,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:00:56,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:56,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:00:56,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:56,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:56,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:56,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:56,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:56,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:00:56,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:56,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:00:56,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:56,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:56,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:56,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:56,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:56,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:56,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:56,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:56,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:56,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:56,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:56,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:56,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:56,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:56,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:56,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:56,873 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:00:56,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:00:56,886 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:00:56,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:00:56,908 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:00:56,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:56,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:00:56,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719865992] [2021-03-11 16:00:56,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:00:56,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 16:00:56,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991212835] [2021-03-11 16:00:56,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 16:00:56,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:00:56,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 16:00:56,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-03-11 16:00:56,915 INFO L87 Difference]: Start difference. First operand 1061 states and 3346 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:00:57,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:00:57,917 INFO L93 Difference]: Finished difference Result 1296 states and 4035 transitions. [2021-03-11 16:00:57,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-11 16:00:57,917 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:00:57,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:00:57,924 INFO L225 Difference]: With dead ends: 1296 [2021-03-11 16:00:57,924 INFO L226 Difference]: Without dead ends: 1267 [2021-03-11 16:00:57,924 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 567.3ms TimeCoverageRelationStatistics Valid=134, Invalid=1126, Unknown=0, NotChecked=0, Total=1260 [2021-03-11 16:00:57,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2021-03-11 16:00:57,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1131. [2021-03-11 16:00:57,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 3.147787610619469) internal successors, (3557), 1130 states have internal predecessors, (3557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:00:57,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 3557 transitions. [2021-03-11 16:00:57,950 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 3557 transitions. Word has length 34 [2021-03-11 16:00:57,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:00:57,951 INFO L480 AbstractCegarLoop]: Abstraction has 1131 states and 3557 transitions. [2021-03-11 16:00:57,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:00:57,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 3557 transitions. [2021-03-11 16:00:57,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:00:57,953 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:00:57,953 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:00:57,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 16:00:57,954 INFO L428 AbstractCegarLoop]: === Iteration 7 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:00:57,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:00:57,954 INFO L82 PathProgramCache]: Analyzing trace with hash 2075845910, now seen corresponding path program 7 times [2021-03-11 16:00:57,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:00:57,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090121864] [2021-03-11 16:00:57,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:00:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:00:57,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:57,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:00:58,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:58,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:00:58,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:58,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:00:58,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:58,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:58,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:58,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:58,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:58,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:00:58,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:58,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:00:58,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:58,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:58,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:58,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:58,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:58,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:58,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:58,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:58,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:58,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:58,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:58,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:58,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:58,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:58,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:58,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:58,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:58,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:58,193 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:00:58,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:00:58,213 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:00:58,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:58,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:00:58,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090121864] [2021-03-11 16:00:58,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:00:58,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:00:58,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47593500] [2021-03-11 16:00:58,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:00:58,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:00:58,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:00:58,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:00:58,217 INFO L87 Difference]: Start difference. First operand 1131 states and 3557 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:00:59,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:00:59,294 INFO L93 Difference]: Finished difference Result 1340 states and 4137 transitions. [2021-03-11 16:00:59,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 16:00:59,294 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:00:59,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:00:59,300 INFO L225 Difference]: With dead ends: 1340 [2021-03-11 16:00:59,300 INFO L226 Difference]: Without dead ends: 1315 [2021-03-11 16:00:59,302 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 587.0ms TimeCoverageRelationStatistics Valid=156, Invalid=1404, Unknown=0, NotChecked=0, Total=1560 [2021-03-11 16:00:59,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2021-03-11 16:00:59,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1135. [2021-03-11 16:00:59,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 3.144620811287478) internal successors, (3566), 1134 states have internal predecessors, (3566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:00:59,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 3566 transitions. [2021-03-11 16:00:59,328 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 3566 transitions. Word has length 34 [2021-03-11 16:00:59,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:00:59,328 INFO L480 AbstractCegarLoop]: Abstraction has 1135 states and 3566 transitions. [2021-03-11 16:00:59,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:00:59,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 3566 transitions. [2021-03-11 16:00:59,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:00:59,331 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:00:59,331 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:00:59,331 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 16:00:59,331 INFO L428 AbstractCegarLoop]: === Iteration 8 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:00:59,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:00:59,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1400682784, now seen corresponding path program 8 times [2021-03-11 16:00:59,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:00:59,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832130680] [2021-03-11 16:00:59,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:00:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:00:59,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:59,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:00:59,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:59,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:00:59,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:59,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:00:59,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:59,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:59,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:59,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:59,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:59,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:00:59,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:59,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:00:59,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:59,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:59,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:59,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:59,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:59,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:59,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:59,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:59,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:59,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:59,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:59,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:59,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:59,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:59,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:59,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:59,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:00:59,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:00:59,543 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:00:59,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:00:59,561 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:00:59,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:00:59,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:00:59,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832130680] [2021-03-11 16:00:59,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:00:59,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:00:59,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118060940] [2021-03-11 16:00:59,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:00:59,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:00:59,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:00:59,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:00:59,565 INFO L87 Difference]: Start difference. First operand 1135 states and 3566 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:00,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:00,517 INFO L93 Difference]: Finished difference Result 1306 states and 4037 transitions. [2021-03-11 16:01:00,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-11 16:01:00,518 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:00,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:00,524 INFO L225 Difference]: With dead ends: 1306 [2021-03-11 16:01:00,524 INFO L226 Difference]: Without dead ends: 1245 [2021-03-11 16:01:00,525 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 568.2ms TimeCoverageRelationStatistics Valid=138, Invalid=1268, Unknown=0, NotChecked=0, Total=1406 [2021-03-11 16:01:00,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2021-03-11 16:01:00,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1111. [2021-03-11 16:01:00,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 3.1585585585585587) internal successors, (3506), 1110 states have internal predecessors, (3506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:00,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 3506 transitions. [2021-03-11 16:01:00,548 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 3506 transitions. Word has length 34 [2021-03-11 16:01:00,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:00,549 INFO L480 AbstractCegarLoop]: Abstraction has 1111 states and 3506 transitions. [2021-03-11 16:01:00,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:00,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 3506 transitions. [2021-03-11 16:01:00,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:00,552 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:00,552 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:00,552 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 16:01:00,552 INFO L428 AbstractCegarLoop]: === Iteration 9 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:00,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:00,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1727392474, now seen corresponding path program 9 times [2021-03-11 16:01:00,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:00,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213334328] [2021-03-11 16:01:00,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:00,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:00,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:00,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:00,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:00,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:00,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:00,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:00,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:00,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:00,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:00,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:00,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:00,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:00,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:00,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:00,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:00,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:00,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:00,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:00,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:00,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:00,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:00,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:00,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:00,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:00,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:00,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:00,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:00,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:00,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:00,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:00,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:00,772 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:01:00,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:00,790 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:00,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:00,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:00,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213334328] [2021-03-11 16:01:00,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:00,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:01:00,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152676694] [2021-03-11 16:01:00,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:01:00,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:00,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:01:00,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:01:00,794 INFO L87 Difference]: Start difference. First operand 1111 states and 3506 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:02,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:02,017 INFO L93 Difference]: Finished difference Result 1386 states and 4323 transitions. [2021-03-11 16:01:02,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-11 16:01:02,018 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:02,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:02,024 INFO L225 Difference]: With dead ends: 1386 [2021-03-11 16:01:02,024 INFO L226 Difference]: Without dead ends: 1361 [2021-03-11 16:01:02,024 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 683.5ms TimeCoverageRelationStatistics Valid=194, Invalid=1786, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 16:01:02,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2021-03-11 16:01:02,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1128. [2021-03-11 16:01:02,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 1127 states have (on average 3.1517302573203194) internal successors, (3552), 1127 states have internal predecessors, (3552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:02,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 3552 transitions. [2021-03-11 16:01:02,049 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 3552 transitions. Word has length 34 [2021-03-11 16:01:02,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:02,050 INFO L480 AbstractCegarLoop]: Abstraction has 1128 states and 3552 transitions. [2021-03-11 16:01:02,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:02,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 3552 transitions. [2021-03-11 16:01:02,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:02,053 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:02,053 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:02,053 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 16:01:02,053 INFO L428 AbstractCegarLoop]: === Iteration 10 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:02,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:02,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1014400936, now seen corresponding path program 10 times [2021-03-11 16:01:02,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:02,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088543670] [2021-03-11 16:01:02,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:02,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:02,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:02,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:02,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:02,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:02,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:02,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:02,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:02,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:02,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:02,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:02,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:02,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:02,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:02,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:02,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:02,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:02,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:02,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:02,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:02,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:02,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:02,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:02,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:02,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:02,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:02,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:02,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:02,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:02,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:02,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:02,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:02,255 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:01:02,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:02,278 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:02,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:02,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088543670] [2021-03-11 16:01:02,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:02,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:01:02,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219136942] [2021-03-11 16:01:02,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:01:02,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:02,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:01:02,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:01:02,282 INFO L87 Difference]: Start difference. First operand 1128 states and 3552 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:03,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:03,252 INFO L93 Difference]: Finished difference Result 1363 states and 4253 transitions. [2021-03-11 16:01:03,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 16:01:03,266 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:03,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:03,272 INFO L225 Difference]: With dead ends: 1363 [2021-03-11 16:01:03,272 INFO L226 Difference]: Without dead ends: 1330 [2021-03-11 16:01:03,273 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 605.6ms TimeCoverageRelationStatistics Valid=167, Invalid=1473, Unknown=0, NotChecked=0, Total=1640 [2021-03-11 16:01:03,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-03-11 16:01:03,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1124. [2021-03-11 16:01:03,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 1123 states have (on average 3.151380231522707) internal successors, (3539), 1123 states have internal predecessors, (3539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:03,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 3539 transitions. [2021-03-11 16:01:03,303 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 3539 transitions. Word has length 34 [2021-03-11 16:01:03,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:03,303 INFO L480 AbstractCegarLoop]: Abstraction has 1124 states and 3539 transitions. [2021-03-11 16:01:03,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:03,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 3539 transitions. [2021-03-11 16:01:03,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:03,307 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:03,307 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:03,307 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 16:01:03,307 INFO L428 AbstractCegarLoop]: === Iteration 11 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:03,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:03,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1853753036, now seen corresponding path program 11 times [2021-03-11 16:01:03,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:03,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436751063] [2021-03-11 16:01:03,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:03,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:03,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:03,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:03,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:03,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:03,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:03,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:03,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:03,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:03,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:03,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:03,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:03,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:03,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:03,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:03,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:03,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:03,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:03,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:03,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:03,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:03,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:03,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:03,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:03,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:03,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:03,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:03,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:03,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:03,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:03,507 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:01:03,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:03,524 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:01:03,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:03,556 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:03,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:03,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:03,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436751063] [2021-03-11 16:01:03,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:03,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:01:03,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115692369] [2021-03-11 16:01:03,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:01:03,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:03,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:01:03,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:01:03,560 INFO L87 Difference]: Start difference. First operand 1124 states and 3539 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:04,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:04,615 INFO L93 Difference]: Finished difference Result 1341 states and 4193 transitions. [2021-03-11 16:01:04,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 16:01:04,615 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:04,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:04,621 INFO L225 Difference]: With dead ends: 1341 [2021-03-11 16:01:04,621 INFO L226 Difference]: Without dead ends: 1300 [2021-03-11 16:01:04,622 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 607.4ms TimeCoverageRelationStatistics Valid=170, Invalid=1552, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 16:01:04,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2021-03-11 16:01:04,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1120. [2021-03-11 16:01:04,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 3.1510277033065237) internal successors, (3526), 1119 states have internal predecessors, (3526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:04,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 3526 transitions. [2021-03-11 16:01:04,646 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 3526 transitions. Word has length 34 [2021-03-11 16:01:04,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:04,646 INFO L480 AbstractCegarLoop]: Abstraction has 1120 states and 3526 transitions. [2021-03-11 16:01:04,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:04,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 3526 transitions. [2021-03-11 16:01:04,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:04,649 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:04,649 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:04,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 16:01:04,649 INFO L428 AbstractCegarLoop]: === Iteration 12 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:04,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:04,650 INFO L82 PathProgramCache]: Analyzing trace with hash 500762124, now seen corresponding path program 12 times [2021-03-11 16:01:04,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:04,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698542469] [2021-03-11 16:01:04,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:04,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:04,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:04,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:04,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:04,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:04,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:04,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:04,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:04,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:04,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:04,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:04,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:04,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:04,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:04,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:04,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:04,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:04,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:04,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:04,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:04,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:04,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:04,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:04,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:04,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:04,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:04,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:04,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:04,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:04,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:04,840 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:01:04,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:04,850 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:01:04,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:04,868 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:04,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:04,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:04,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698542469] [2021-03-11 16:01:04,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:04,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 16:01:04,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695386688] [2021-03-11 16:01:04,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 16:01:04,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:04,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 16:01:04,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-03-11 16:01:04,873 INFO L87 Difference]: Start difference. First operand 1120 states and 3526 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:05,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:05,886 INFO L93 Difference]: Finished difference Result 1345 states and 4193 transitions. [2021-03-11 16:01:05,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 16:01:05,887 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:05,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:05,892 INFO L225 Difference]: With dead ends: 1345 [2021-03-11 16:01:05,892 INFO L226 Difference]: Without dead ends: 1316 [2021-03-11 16:01:05,893 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 605.4ms TimeCoverageRelationStatistics Valid=150, Invalid=1256, Unknown=0, NotChecked=0, Total=1406 [2021-03-11 16:01:05,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2021-03-11 16:01:05,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1150. [2021-03-11 16:01:05,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 3.1496953872932987) internal successors, (3619), 1149 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:05,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 3619 transitions. [2021-03-11 16:01:05,918 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 3619 transitions. Word has length 34 [2021-03-11 16:01:05,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:05,918 INFO L480 AbstractCegarLoop]: Abstraction has 1150 states and 3619 transitions. [2021-03-11 16:01:05,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:05,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 3619 transitions. [2021-03-11 16:01:05,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:05,920 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:05,920 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:05,921 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 16:01:05,921 INFO L428 AbstractCegarLoop]: === Iteration 13 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:05,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:05,921 INFO L82 PathProgramCache]: Analyzing trace with hash -385036156, now seen corresponding path program 13 times [2021-03-11 16:01:05,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:05,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322078629] [2021-03-11 16:01:05,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:05,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:05,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:05,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:05,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:05,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:05,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:05,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:05,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:05,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:05,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:05,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:05,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:05,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:05,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:05,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:05,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:06,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:06,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:06,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:06,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:06,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:06,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:06,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:06,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:06,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:06,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:06,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:06,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:06,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:06,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:06,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:06,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:06,106 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:01:06,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:06,124 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:06,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:06,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:06,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322078629] [2021-03-11 16:01:06,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:06,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:01:06,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095705129] [2021-03-11 16:01:06,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:01:06,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:06,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:01:06,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:01:06,129 INFO L87 Difference]: Start difference. First operand 1150 states and 3619 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:07,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:07,245 INFO L93 Difference]: Finished difference Result 1389 states and 4295 transitions. [2021-03-11 16:01:07,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 16:01:07,246 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:07,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:07,251 INFO L225 Difference]: With dead ends: 1389 [2021-03-11 16:01:07,251 INFO L226 Difference]: Without dead ends: 1364 [2021-03-11 16:01:07,252 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 654.1ms TimeCoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 16:01:07,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2021-03-11 16:01:07,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1154. [2021-03-11 16:01:07,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 1153 states have (on average 3.1465741543798784) internal successors, (3628), 1153 states have internal predecessors, (3628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:07,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 3628 transitions. [2021-03-11 16:01:07,276 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 3628 transitions. Word has length 34 [2021-03-11 16:01:07,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:07,276 INFO L480 AbstractCegarLoop]: Abstraction has 1154 states and 3628 transitions. [2021-03-11 16:01:07,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:07,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 3628 transitions. [2021-03-11 16:01:07,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:07,278 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:07,278 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:07,279 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-11 16:01:07,279 INFO L428 AbstractCegarLoop]: === Iteration 14 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:07,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:07,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1168137730, now seen corresponding path program 14 times [2021-03-11 16:01:07,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:07,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442204471] [2021-03-11 16:01:07,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:07,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:07,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:07,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:07,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:07,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:07,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:07,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:07,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:07,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:07,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:07,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:07,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:07,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:07,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:07,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:07,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:07,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:07,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:07,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:07,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:07,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:07,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:07,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:07,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:07,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:07,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:07,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:07,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:07,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:07,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:07,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:07,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:07,503 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:01:07,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:07,521 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:07,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:07,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:07,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442204471] [2021-03-11 16:01:07,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:07,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:01:07,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456723105] [2021-03-11 16:01:07,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:01:07,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:07,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:01:07,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:01:07,524 INFO L87 Difference]: Start difference. First operand 1154 states and 3628 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:08,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:08,479 INFO L93 Difference]: Finished difference Result 1355 states and 4195 transitions. [2021-03-11 16:01:08,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 16:01:08,479 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:08,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:08,482 INFO L225 Difference]: With dead ends: 1355 [2021-03-11 16:01:08,483 INFO L226 Difference]: Without dead ends: 1302 [2021-03-11 16:01:08,483 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 577.2ms TimeCoverageRelationStatistics Valid=154, Invalid=1406, Unknown=0, NotChecked=0, Total=1560 [2021-03-11 16:01:08,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2021-03-11 16:01:08,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1114. [2021-03-11 16:01:08,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 1113 states have (on average 3.1563342318059298) internal successors, (3513), 1113 states have internal predecessors, (3513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:08,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 3513 transitions. [2021-03-11 16:01:08,505 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 3513 transitions. Word has length 34 [2021-03-11 16:01:08,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:08,505 INFO L480 AbstractCegarLoop]: Abstraction has 1114 states and 3513 transitions. [2021-03-11 16:01:08,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:08,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 3513 transitions. [2021-03-11 16:01:08,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:08,507 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:08,507 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:08,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-11 16:01:08,508 INFO L428 AbstractCegarLoop]: === Iteration 15 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:08,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:08,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1189899618, now seen corresponding path program 15 times [2021-03-11 16:01:08,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:08,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229671546] [2021-03-11 16:01:08,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:08,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:08,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:08,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:08,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:08,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:08,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:08,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:08,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:08,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:08,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:08,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:08,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:08,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:08,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:08,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:08,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:08,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:08,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:08,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:08,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:08,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:08,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:08,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:08,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:08,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:08,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:08,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:08,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:08,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:08,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:08,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:08,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:08,731 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:01:08,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:08,751 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:08,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:08,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:08,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229671546] [2021-03-11 16:01:08,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:08,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:01:08,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537739998] [2021-03-11 16:01:08,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:01:08,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:08,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:01:08,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:01:08,755 INFO L87 Difference]: Start difference. First operand 1114 states and 3513 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:09,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:09,973 INFO L93 Difference]: Finished difference Result 1370 states and 4273 transitions. [2021-03-11 16:01:09,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-11 16:01:09,973 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:09,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:09,977 INFO L225 Difference]: With dead ends: 1370 [2021-03-11 16:01:09,977 INFO L226 Difference]: Without dead ends: 1345 [2021-03-11 16:01:09,977 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 683.2ms TimeCoverageRelationStatistics Valid=195, Invalid=1785, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 16:01:09,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2021-03-11 16:01:09,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1127. [2021-03-11 16:01:09,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 3.153641207815275) internal successors, (3551), 1126 states have internal predecessors, (3551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:09,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 3551 transitions. [2021-03-11 16:01:09,998 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 3551 transitions. Word has length 34 [2021-03-11 16:01:09,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:09,998 INFO L480 AbstractCegarLoop]: Abstraction has 1127 states and 3551 transitions. [2021-03-11 16:01:09,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:09,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 3551 transitions. [2021-03-11 16:01:10,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:10,000 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:10,000 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:10,001 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-11 16:01:10,001 INFO L428 AbstractCegarLoop]: === Iteration 16 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:10,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:10,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1551893792, now seen corresponding path program 16 times [2021-03-11 16:01:10,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:10,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203293731] [2021-03-11 16:01:10,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:10,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:10,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:10,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:10,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:10,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:10,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:10,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:10,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:10,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:10,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:10,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:10,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:10,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:10,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:10,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:10,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:10,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:10,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:10,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:10,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:10,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:10,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:10,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:10,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:10,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:10,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:10,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:10,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:10,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:10,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:10,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:10,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:10,193 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:01:10,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:10,213 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:10,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:10,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:10,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203293731] [2021-03-11 16:01:10,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:10,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:01:10,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800641327] [2021-03-11 16:01:10,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:01:10,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:10,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:01:10,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:01:10,217 INFO L87 Difference]: Start difference. First operand 1127 states and 3551 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:11,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:11,191 INFO L93 Difference]: Finished difference Result 1347 states and 4203 transitions. [2021-03-11 16:01:11,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 16:01:11,191 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:11,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:11,194 INFO L225 Difference]: With dead ends: 1347 [2021-03-11 16:01:11,194 INFO L226 Difference]: Without dead ends: 1314 [2021-03-11 16:01:11,194 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 572.6ms TimeCoverageRelationStatistics Valid=168, Invalid=1472, Unknown=0, NotChecked=0, Total=1640 [2021-03-11 16:01:11,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2021-03-11 16:01:11,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1123. [2021-03-11 16:01:11,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 3.1532976827094474) internal successors, (3538), 1122 states have internal predecessors, (3538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:11,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 3538 transitions. [2021-03-11 16:01:11,215 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 3538 transitions. Word has length 34 [2021-03-11 16:01:11,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:11,215 INFO L480 AbstractCegarLoop]: Abstraction has 1123 states and 3538 transitions. [2021-03-11 16:01:11,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:11,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 3538 transitions. [2021-03-11 16:01:11,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:11,217 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:11,217 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:11,217 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-11 16:01:11,218 INFO L428 AbstractCegarLoop]: === Iteration 17 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:11,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:11,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1316260180, now seen corresponding path program 17 times [2021-03-11 16:01:11,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:11,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578150786] [2021-03-11 16:01:11,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:11,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:11,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:11,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:11,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:11,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:11,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:11,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:11,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:11,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:11,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:11,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:11,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:11,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:11,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:11,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:11,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:11,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:11,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:11,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:11,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:11,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:11,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:11,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:11,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:11,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:11,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:11,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:11,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:11,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:11,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:11,371 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:01:11,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:11,405 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:01:11,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:11,427 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:11,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:11,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578150786] [2021-03-11 16:01:11,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:11,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:01:11,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269429300] [2021-03-11 16:01:11,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:01:11,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:11,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:01:11,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:01:11,430 INFO L87 Difference]: Start difference. First operand 1123 states and 3538 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:12,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:12,466 INFO L93 Difference]: Finished difference Result 1321 states and 4131 transitions. [2021-03-11 16:01:12,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 16:01:12,466 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:12,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:12,469 INFO L225 Difference]: With dead ends: 1321 [2021-03-11 16:01:12,469 INFO L226 Difference]: Without dead ends: 1280 [2021-03-11 16:01:12,470 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 585.8ms TimeCoverageRelationStatistics Valid=170, Invalid=1552, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 16:01:12,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2021-03-11 16:01:12,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1119. [2021-03-11 16:01:12,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.1529516994633275) internal successors, (3525), 1118 states have internal predecessors, (3525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:12,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3525 transitions. [2021-03-11 16:01:12,490 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3525 transitions. Word has length 34 [2021-03-11 16:01:12,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:12,490 INFO L480 AbstractCegarLoop]: Abstraction has 1119 states and 3525 transitions. [2021-03-11 16:01:12,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:12,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3525 transitions. [2021-03-11 16:01:12,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:12,492 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:12,492 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:12,493 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-11 16:01:12,493 INFO L428 AbstractCegarLoop]: === Iteration 18 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:12,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:12,493 INFO L82 PathProgramCache]: Analyzing trace with hash -36730732, now seen corresponding path program 18 times [2021-03-11 16:01:12,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:12,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974844468] [2021-03-11 16:01:12,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:12,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:12,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:12,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:12,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:12,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:12,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:12,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:12,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:12,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:12,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:12,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:12,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:12,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:12,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:12,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:12,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:12,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:12,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:12,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:12,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:12,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:12,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:12,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:12,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:12,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:12,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:12,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:12,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:12,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:12,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:12,647 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:01:12,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:12,654 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:01:12,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:12,671 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:12,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:12,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:12,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974844468] [2021-03-11 16:01:12,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:12,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 16:01:12,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940935901] [2021-03-11 16:01:12,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 16:01:12,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:12,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 16:01:12,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-03-11 16:01:12,675 INFO L87 Difference]: Start difference. First operand 1119 states and 3525 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:13,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:13,659 INFO L93 Difference]: Finished difference Result 1341 states and 4182 transitions. [2021-03-11 16:01:13,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-11 16:01:13,660 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:13,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:13,662 INFO L225 Difference]: With dead ends: 1341 [2021-03-11 16:01:13,662 INFO L226 Difference]: Without dead ends: 1312 [2021-03-11 16:01:13,663 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 555.3ms TimeCoverageRelationStatistics Valid=150, Invalid=1256, Unknown=0, NotChecked=0, Total=1406 [2021-03-11 16:01:13,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2021-03-11 16:01:13,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1141. [2021-03-11 16:01:13,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1140 states have (on average 3.150877192982456) internal successors, (3592), 1140 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:13,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 3592 transitions. [2021-03-11 16:01:13,682 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 3592 transitions. Word has length 34 [2021-03-11 16:01:13,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:13,682 INFO L480 AbstractCegarLoop]: Abstraction has 1141 states and 3592 transitions. [2021-03-11 16:01:13,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:13,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 3592 transitions. [2021-03-11 16:01:13,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:13,684 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:13,684 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:13,685 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-11 16:01:13,685 INFO L428 AbstractCegarLoop]: === Iteration 19 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:13,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:13,685 INFO L82 PathProgramCache]: Analyzing trace with hash -922529012, now seen corresponding path program 19 times [2021-03-11 16:01:13,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:13,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798666569] [2021-03-11 16:01:13,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:13,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:13,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:13,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:13,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:13,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:13,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:13,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:13,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:13,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:13,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:13,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:13,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:13,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:13,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:13,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:13,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:13,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:13,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:13,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:13,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:13,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:13,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:13,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:13,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:13,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:13,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:13,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:13,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:13,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:13,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:13,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:13,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:13,899 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:01:13,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:13,922 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:13,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:13,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:13,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798666569] [2021-03-11 16:01:13,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:13,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:01:13,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836930928] [2021-03-11 16:01:13,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:01:13,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:13,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:01:13,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:01:13,926 INFO L87 Difference]: Start difference. First operand 1141 states and 3592 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:15,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:15,007 INFO L93 Difference]: Finished difference Result 1393 states and 4306 transitions. [2021-03-11 16:01:15,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 16:01:15,009 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:15,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:15,012 INFO L225 Difference]: With dead ends: 1393 [2021-03-11 16:01:15,012 INFO L226 Difference]: Without dead ends: 1368 [2021-03-11 16:01:15,013 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 650.9ms TimeCoverageRelationStatistics Valid=174, Invalid=1548, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 16:01:15,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2021-03-11 16:01:15,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1145. [2021-03-11 16:01:15,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 1144 states have (on average 3.147727272727273) internal successors, (3601), 1144 states have internal predecessors, (3601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:15,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 3601 transitions. [2021-03-11 16:01:15,034 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 3601 transitions. Word has length 34 [2021-03-11 16:01:15,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:15,034 INFO L480 AbstractCegarLoop]: Abstraction has 1145 states and 3601 transitions. [2021-03-11 16:01:15,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:15,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 3601 transitions. [2021-03-11 16:01:15,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:15,036 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:15,036 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:15,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-11 16:01:15,036 INFO L428 AbstractCegarLoop]: === Iteration 20 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:15,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:15,037 INFO L82 PathProgramCache]: Analyzing trace with hash 630644874, now seen corresponding path program 20 times [2021-03-11 16:01:15,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:15,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298084512] [2021-03-11 16:01:15,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:15,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:15,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:15,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:15,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:15,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:15,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:15,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:15,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:15,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:15,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:15,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:15,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:15,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:15,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:15,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:15,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:15,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:15,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:15,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:15,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:15,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:15,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:15,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:15,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:15,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:15,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:15,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:15,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:15,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:15,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:15,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:15,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:15,237 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:01:15,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:15,258 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:15,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:15,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:15,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298084512] [2021-03-11 16:01:15,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:15,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:01:15,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745459508] [2021-03-11 16:01:15,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:01:15,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:15,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:01:15,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:01:15,261 INFO L87 Difference]: Start difference. First operand 1145 states and 3601 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:16,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:16,359 INFO L93 Difference]: Finished difference Result 1359 states and 4206 transitions. [2021-03-11 16:01:16,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-11 16:01:16,359 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:16,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:16,363 INFO L225 Difference]: With dead ends: 1359 [2021-03-11 16:01:16,363 INFO L226 Difference]: Without dead ends: 1310 [2021-03-11 16:01:16,363 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 627.4ms TimeCoverageRelationStatistics Valid=156, Invalid=1404, Unknown=0, NotChecked=0, Total=1560 [2021-03-11 16:01:16,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2021-03-11 16:01:16,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1117. [2021-03-11 16:01:16,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1116 states have (on average 3.1550179211469533) internal successors, (3521), 1116 states have internal predecessors, (3521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:16,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 3521 transitions. [2021-03-11 16:01:16,383 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 3521 transitions. Word has length 34 [2021-03-11 16:01:16,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:16,384 INFO L480 AbstractCegarLoop]: Abstraction has 1117 states and 3521 transitions. [2021-03-11 16:01:16,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:16,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 3521 transitions. [2021-03-11 16:01:16,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:16,386 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:16,386 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:16,386 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-11 16:01:16,386 INFO L428 AbstractCegarLoop]: === Iteration 21 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:16,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:16,386 INFO L82 PathProgramCache]: Analyzing trace with hash 765588382, now seen corresponding path program 21 times [2021-03-11 16:01:16,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:16,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560431283] [2021-03-11 16:01:16,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:16,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:16,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:16,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:16,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:16,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:16,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:16,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:16,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:16,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:16,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:16,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:16,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:16,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:16,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:16,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:16,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:16,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:16,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:16,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:16,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:16,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:16,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:16,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:16,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:16,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:16,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:16,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:16,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:16,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:16,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:16,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:16,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:16,608 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:01:16,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:16,627 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:16,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:16,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560431283] [2021-03-11 16:01:16,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:16,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:01:16,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906616368] [2021-03-11 16:01:16,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:01:16,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:16,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:01:16,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:01:16,631 INFO L87 Difference]: Start difference. First operand 1117 states and 3521 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:18,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:18,088 INFO L93 Difference]: Finished difference Result 1360 states and 4235 transitions. [2021-03-11 16:01:18,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-11 16:01:18,088 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:18,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:18,092 INFO L225 Difference]: With dead ends: 1360 [2021-03-11 16:01:18,092 INFO L226 Difference]: Without dead ends: 1335 [2021-03-11 16:01:18,093 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 880.7ms TimeCoverageRelationStatistics Valid=238, Invalid=2312, Unknown=0, NotChecked=0, Total=2550 [2021-03-11 16:01:18,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2021-03-11 16:01:18,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1126. [2021-03-11 16:01:18,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 1125 states have (on average 3.152) internal successors, (3546), 1125 states have internal predecessors, (3546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:18,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 3546 transitions. [2021-03-11 16:01:18,113 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 3546 transitions. Word has length 34 [2021-03-11 16:01:18,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:18,115 INFO L480 AbstractCegarLoop]: Abstraction has 1126 states and 3546 transitions. [2021-03-11 16:01:18,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:18,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 3546 transitions. [2021-03-11 16:01:18,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:18,117 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:18,117 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:18,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-11 16:01:18,117 INFO L428 AbstractCegarLoop]: === Iteration 22 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:18,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:18,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1976205028, now seen corresponding path program 22 times [2021-03-11 16:01:18,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:18,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197778198] [2021-03-11 16:01:18,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:18,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:18,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:18,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:18,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:18,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:18,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:18,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:18,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:18,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:18,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:18,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:18,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:18,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:18,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:18,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:18,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:18,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:18,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:18,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:18,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:18,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:18,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:18,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:18,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:18,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:18,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:18,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:18,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:18,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:18,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:18,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:18,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:18,359 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:01:18,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:18,384 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:18,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:18,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:18,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197778198] [2021-03-11 16:01:18,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:18,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:01:18,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364627526] [2021-03-11 16:01:18,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:01:18,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:18,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:01:18,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:01:18,388 INFO L87 Difference]: Start difference. First operand 1126 states and 3546 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:19,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:19,564 INFO L93 Difference]: Finished difference Result 1337 states and 4165 transitions. [2021-03-11 16:01:19,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-11 16:01:19,564 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:19,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:19,567 INFO L225 Difference]: With dead ends: 1337 [2021-03-11 16:01:19,567 INFO L226 Difference]: Without dead ends: 1304 [2021-03-11 16:01:19,567 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 763.0ms TimeCoverageRelationStatistics Valid=208, Invalid=1862, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 16:01:19,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-03-11 16:01:19,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1122. [2021-03-11 16:01:19,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 3.151650312221231) internal successors, (3533), 1121 states have internal predecessors, (3533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:19,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 3533 transitions. [2021-03-11 16:01:19,584 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 3533 transitions. Word has length 34 [2021-03-11 16:01:19,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:19,584 INFO L480 AbstractCegarLoop]: Abstraction has 1122 states and 3533 transitions. [2021-03-11 16:01:19,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:19,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 3533 transitions. [2021-03-11 16:01:19,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:19,586 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:19,586 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:19,586 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-11 16:01:19,586 INFO L428 AbstractCegarLoop]: === Iteration 23 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:19,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:19,587 INFO L82 PathProgramCache]: Analyzing trace with hash 891948944, now seen corresponding path program 23 times [2021-03-11 16:01:19,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:19,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190669792] [2021-03-11 16:01:19,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:19,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:19,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:19,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:19,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:19,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:19,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:19,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:19,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:19,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:19,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:19,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:19,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:19,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:19,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:19,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:19,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:19,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:19,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:19,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:19,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:19,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:19,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:19,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:19,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:19,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:19,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:19,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:19,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:19,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:19,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:19,781 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:01:19,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:19,801 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:01:19,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:19,827 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:19,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:19,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:19,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190669792] [2021-03-11 16:01:19,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:19,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:01:19,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323923249] [2021-03-11 16:01:19,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:01:19,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:19,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:01:19,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:01:19,831 INFO L87 Difference]: Start difference. First operand 1122 states and 3533 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:21,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:21,139 INFO L93 Difference]: Finished difference Result 1327 states and 4145 transitions. [2021-03-11 16:01:21,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-11 16:01:21,139 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:21,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:21,142 INFO L225 Difference]: With dead ends: 1327 [2021-03-11 16:01:21,142 INFO L226 Difference]: Without dead ends: 1286 [2021-03-11 16:01:21,143 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 782.5ms TimeCoverageRelationStatistics Valid=217, Invalid=2039, Unknown=0, NotChecked=0, Total=2256 [2021-03-11 16:01:21,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2021-03-11 16:01:21,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1118. [2021-03-11 16:01:21,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1118 states, 1117 states have (on average 3.153983885407341) internal successors, (3523), 1117 states have internal predecessors, (3523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:21,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 3523 transitions. [2021-03-11 16:01:21,163 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 3523 transitions. Word has length 34 [2021-03-11 16:01:21,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:21,164 INFO L480 AbstractCegarLoop]: Abstraction has 1118 states and 3523 transitions. [2021-03-11 16:01:21,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:21,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 3523 transitions. [2021-03-11 16:01:21,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:21,166 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:21,166 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:21,166 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-11 16:01:21,166 INFO L428 AbstractCegarLoop]: === Iteration 24 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:21,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:21,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1748912560, now seen corresponding path program 24 times [2021-03-11 16:01:21,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:21,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81407746] [2021-03-11 16:01:21,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:21,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:21,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:21,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:21,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:21,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:21,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:21,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:21,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:21,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:21,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:21,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:21,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:21,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:21,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:21,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:21,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:21,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:21,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:21,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:21,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:21,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:21,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:21,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:21,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:21,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:21,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:21,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:21,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:21,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:21,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:21,374 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:01:21,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:01:21,396 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:01:21,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:21,418 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:21,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:21,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:21,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81407746] [2021-03-11 16:01:21,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:21,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:01:21,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73713459] [2021-03-11 16:01:21,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:01:21,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:21,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:01:21,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:01:21,421 INFO L87 Difference]: Start difference. First operand 1118 states and 3523 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:23,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:23,409 INFO L93 Difference]: Finished difference Result 1632 states and 5109 transitions. [2021-03-11 16:01:23,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-11 16:01:23,409 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:23,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:23,412 INFO L225 Difference]: With dead ends: 1632 [2021-03-11 16:01:23,412 INFO L226 Difference]: Without dead ends: 1603 [2021-03-11 16:01:23,412 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 1083.8ms TimeCoverageRelationStatistics Valid=302, Invalid=3004, Unknown=0, NotChecked=0, Total=3306 [2021-03-11 16:01:23,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2021-03-11 16:01:23,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1157. [2021-03-11 16:01:23,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1156 states have (on average 3.140138408304498) internal successors, (3630), 1156 states have internal predecessors, (3630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:23,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 3630 transitions. [2021-03-11 16:01:23,429 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 3630 transitions. Word has length 34 [2021-03-11 16:01:23,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:23,429 INFO L480 AbstractCegarLoop]: Abstraction has 1157 states and 3630 transitions. [2021-03-11 16:01:23,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:23,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 3630 transitions. [2021-03-11 16:01:23,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:23,431 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:23,431 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:23,431 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-11 16:01:23,431 INFO L428 AbstractCegarLoop]: === Iteration 25 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:23,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:23,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1456071578, now seen corresponding path program 25 times [2021-03-11 16:01:23,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:23,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359241797] [2021-03-11 16:01:23,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:23,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:23,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:23,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:23,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:23,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:23,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:23,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:23,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:23,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:23,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:23,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:23,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:23,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:23,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:23,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:23,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:23,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:23,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:23,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:23,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:23,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:23,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:23,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:23,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:23,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:23,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:23,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:23,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:23,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:23,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:23,640 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:01:23,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:01:23,658 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:01:23,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:23,678 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:23,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:23,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:23,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359241797] [2021-03-11 16:01:23,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:23,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:01:23,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489143083] [2021-03-11 16:01:23,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:01:23,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:23,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:01:23,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:01:23,681 INFO L87 Difference]: Start difference. First operand 1157 states and 3630 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:25,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:25,308 INFO L93 Difference]: Finished difference Result 1524 states and 4709 transitions. [2021-03-11 16:01:25,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-11 16:01:25,308 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:25,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:25,310 INFO L225 Difference]: With dead ends: 1524 [2021-03-11 16:01:25,310 INFO L226 Difference]: Without dead ends: 1497 [2021-03-11 16:01:25,311 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 866.1ms TimeCoverageRelationStatistics Valid=250, Invalid=2402, Unknown=0, NotChecked=0, Total=2652 [2021-03-11 16:01:25,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2021-03-11 16:01:25,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1156. [2021-03-11 16:01:25,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1155 states have (on average 3.141125541125541) internal successors, (3628), 1155 states have internal predecessors, (3628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:25,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 3628 transitions. [2021-03-11 16:01:25,328 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 3628 transitions. Word has length 34 [2021-03-11 16:01:25,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:25,329 INFO L480 AbstractCegarLoop]: Abstraction has 1156 states and 3628 transitions. [2021-03-11 16:01:25,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:25,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 3628 transitions. [2021-03-11 16:01:25,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:25,331 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:25,331 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:25,331 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-11 16:01:25,331 INFO L428 AbstractCegarLoop]: === Iteration 26 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:25,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:25,332 INFO L82 PathProgramCache]: Analyzing trace with hash -638637814, now seen corresponding path program 26 times [2021-03-11 16:01:25,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:25,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780901758] [2021-03-11 16:01:25,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:25,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:25,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:25,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:25,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:25,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:25,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:25,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:25,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:25,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:25,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:25,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:25,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:25,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:25,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:25,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:25,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:25,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:25,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:25,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:25,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:25,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:25,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:25,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:25,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:25,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:25,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:25,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:25,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:25,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:25,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:25,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:25,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:25,569 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:01:25,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:25,594 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:25,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:25,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:25,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780901758] [2021-03-11 16:01:25,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:25,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:01:25,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983910914] [2021-03-11 16:01:25,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:01:25,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:25,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:01:25,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:01:25,598 INFO L87 Difference]: Start difference. First operand 1156 states and 3628 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:26,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:26,783 INFO L93 Difference]: Finished difference Result 1409 states and 4352 transitions. [2021-03-11 16:01:26,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-11 16:01:26,783 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:26,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:26,786 INFO L225 Difference]: With dead ends: 1409 [2021-03-11 16:01:26,786 INFO L226 Difference]: Without dead ends: 1376 [2021-03-11 16:01:26,786 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 756.2ms TimeCoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 16:01:26,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2021-03-11 16:01:26,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1157. [2021-03-11 16:01:26,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1156 states have (on average 3.139273356401384) internal successors, (3629), 1156 states have internal predecessors, (3629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:26,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 3629 transitions. [2021-03-11 16:01:26,804 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 3629 transitions. Word has length 34 [2021-03-11 16:01:26,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:26,804 INFO L480 AbstractCegarLoop]: Abstraction has 1157 states and 3629 transitions. [2021-03-11 16:01:26,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:26,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 3629 transitions. [2021-03-11 16:01:26,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:26,806 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:26,806 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:26,806 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-11 16:01:26,806 INFO L428 AbstractCegarLoop]: === Iteration 27 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:26,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:26,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1744533200, now seen corresponding path program 27 times [2021-03-11 16:01:26,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:26,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454500662] [2021-03-11 16:01:26,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:26,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:26,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:26,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:26,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:26,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:26,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:26,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:26,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:26,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:26,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:26,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:26,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:26,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:26,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:26,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:26,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:26,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:26,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:26,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:26,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:26,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:26,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:26,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:26,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:26,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:26,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:26,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:26,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:26,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:26,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:26,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:27,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:27,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:27,028 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:01:27,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:27,048 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:27,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:27,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:27,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454500662] [2021-03-11 16:01:27,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:27,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:01:27,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074577427] [2021-03-11 16:01:27,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:01:27,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:27,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:01:27,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:01:27,052 INFO L87 Difference]: Start difference. First operand 1157 states and 3629 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:28,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:28,223 INFO L93 Difference]: Finished difference Result 1404 states and 4333 transitions. [2021-03-11 16:01:28,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 16:01:28,223 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:28,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:28,225 INFO L225 Difference]: With dead ends: 1404 [2021-03-11 16:01:28,225 INFO L226 Difference]: Without dead ends: 1378 [2021-03-11 16:01:28,226 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 680.7ms TimeCoverageRelationStatistics Valid=177, Invalid=1715, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 16:01:28,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2021-03-11 16:01:28,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1159. [2021-03-11 16:01:28,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1158 states have (on average 3.1373056994818653) internal successors, (3633), 1158 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:28,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 3633 transitions. [2021-03-11 16:01:28,243 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 3633 transitions. Word has length 34 [2021-03-11 16:01:28,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:28,243 INFO L480 AbstractCegarLoop]: Abstraction has 1159 states and 3633 transitions. [2021-03-11 16:01:28,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:28,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 3633 transitions. [2021-03-11 16:01:28,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:28,245 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:28,245 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:28,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-11 16:01:28,245 INFO L428 AbstractCegarLoop]: === Iteration 28 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:28,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:28,245 INFO L82 PathProgramCache]: Analyzing trace with hash -650441612, now seen corresponding path program 28 times [2021-03-11 16:01:28,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:28,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066500812] [2021-03-11 16:01:28,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:28,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:28,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:28,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:28,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:28,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:28,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:28,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:28,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:28,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:28,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:28,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:28,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:28,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:28,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:28,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:28,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:28,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:28,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:28,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:28,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:28,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:28,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:28,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:28,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:28,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:28,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:28,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:28,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:28,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:28,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:28,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:28,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:28,489 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:01:28,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:28,514 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:28,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:28,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:28,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066500812] [2021-03-11 16:01:28,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:28,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:01:28,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770393027] [2021-03-11 16:01:28,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:01:28,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:28,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:01:28,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:01:28,518 INFO L87 Difference]: Start difference. First operand 1159 states and 3633 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:29,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:29,722 INFO L93 Difference]: Finished difference Result 1377 states and 4269 transitions. [2021-03-11 16:01:29,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 16:01:29,722 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:29,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:29,724 INFO L225 Difference]: With dead ends: 1377 [2021-03-11 16:01:29,724 INFO L226 Difference]: Without dead ends: 1345 [2021-03-11 16:01:29,725 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 753.3ms TimeCoverageRelationStatistics Valid=179, Invalid=1713, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 16:01:29,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2021-03-11 16:01:29,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1156. [2021-03-11 16:01:29,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1155 states have (on average 3.14025974025974) internal successors, (3627), 1155 states have internal predecessors, (3627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:29,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 3627 transitions. [2021-03-11 16:01:29,741 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 3627 transitions. Word has length 34 [2021-03-11 16:01:29,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:29,741 INFO L480 AbstractCegarLoop]: Abstraction has 1156 states and 3627 transitions. [2021-03-11 16:01:29,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:29,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 3627 transitions. [2021-03-11 16:01:29,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:29,744 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:29,744 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:29,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-11 16:01:29,744 INFO L428 AbstractCegarLoop]: === Iteration 29 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:29,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:29,744 INFO L82 PathProgramCache]: Analyzing trace with hash -678741964, now seen corresponding path program 29 times [2021-03-11 16:01:29,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:29,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716107852] [2021-03-11 16:01:29,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:29,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:29,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:29,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:29,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:29,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:29,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:29,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:29,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:29,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:29,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:29,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:29,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:29,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:29,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:29,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:29,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:29,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:29,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:29,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:29,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:29,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:29,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:29,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:29,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:29,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:29,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:29,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:29,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:29,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:29,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:29,968 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:01:29,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:29,986 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:01:29,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:30,006 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:30,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:30,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:30,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716107852] [2021-03-11 16:01:30,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:30,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:01:30,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687864981] [2021-03-11 16:01:30,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:01:30,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:30,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:01:30,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:01:30,009 INFO L87 Difference]: Start difference. First operand 1156 states and 3627 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:31,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:31,252 INFO L93 Difference]: Finished difference Result 1345 states and 4187 transitions. [2021-03-11 16:01:31,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 16:01:31,253 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:31,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:31,255 INFO L225 Difference]: With dead ends: 1345 [2021-03-11 16:01:31,255 INFO L226 Difference]: Without dead ends: 1308 [2021-03-11 16:01:31,255 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 709.3ms TimeCoverageRelationStatistics Valid=194, Invalid=1876, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 16:01:31,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2021-03-11 16:01:31,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1158. [2021-03-11 16:01:31,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1157 states have (on average 3.1382886776145202) internal successors, (3631), 1157 states have internal predecessors, (3631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:31,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 3631 transitions. [2021-03-11 16:01:31,269 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 3631 transitions. Word has length 34 [2021-03-11 16:01:31,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:31,269 INFO L480 AbstractCegarLoop]: Abstraction has 1158 states and 3631 transitions. [2021-03-11 16:01:31,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:31,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 3631 transitions. [2021-03-11 16:01:31,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:31,271 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:31,272 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:31,272 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-11 16:01:31,272 INFO L428 AbstractCegarLoop]: === Iteration 30 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:31,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:31,272 INFO L82 PathProgramCache]: Analyzing trace with hash 438607870, now seen corresponding path program 30 times [2021-03-11 16:01:31,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:31,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939068450] [2021-03-11 16:01:31,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:31,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:31,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:31,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:31,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:31,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:31,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:31,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:31,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:31,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:31,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:31,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:31,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:31,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:31,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:31,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:31,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:31,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:31,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:31,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:31,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:31,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:31,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:31,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:31,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:31,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:31,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:31,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:31,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:31,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:31,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:31,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:31,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:31,508 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:01:31,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:31,533 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:31,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:31,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:31,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939068450] [2021-03-11 16:01:31,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:31,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:01:31,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405837928] [2021-03-11 16:01:31,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:01:31,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:31,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:01:31,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:01:31,537 INFO L87 Difference]: Start difference. First operand 1158 states and 3631 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:32,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:32,705 INFO L93 Difference]: Finished difference Result 1358 states and 4209 transitions. [2021-03-11 16:01:32,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-11 16:01:32,706 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:32,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:32,708 INFO L225 Difference]: With dead ends: 1358 [2021-03-11 16:01:32,708 INFO L226 Difference]: Without dead ends: 1332 [2021-03-11 16:01:32,709 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 708.5ms TimeCoverageRelationStatistics Valid=169, Invalid=1637, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 16:01:32,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2021-03-11 16:01:32,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1160. [2021-03-11 16:01:32,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 1159 states have (on average 3.1363244176013807) internal successors, (3635), 1159 states have internal predecessors, (3635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:32,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 3635 transitions. [2021-03-11 16:01:32,727 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 3635 transitions. Word has length 34 [2021-03-11 16:01:32,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:32,728 INFO L480 AbstractCegarLoop]: Abstraction has 1160 states and 3635 transitions. [2021-03-11 16:01:32,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:32,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 3635 transitions. [2021-03-11 16:01:32,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:32,730 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:32,730 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:32,730 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-11 16:01:32,730 INFO L428 AbstractCegarLoop]: === Iteration 31 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:32,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:32,731 INFO L82 PathProgramCache]: Analyzing trace with hash -634477510, now seen corresponding path program 31 times [2021-03-11 16:01:32,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:32,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760576211] [2021-03-11 16:01:32,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:32,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:32,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:32,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:32,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:32,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:32,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:32,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:32,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:32,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:32,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:32,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:32,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:32,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:32,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:32,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:32,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:32,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:32,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:32,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:32,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:32,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:32,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:32,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:32,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:32,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:32,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:32,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:32,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:32,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:32,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:32,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:32,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:32,931 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:01:32,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:32,954 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:32,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:32,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:32,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760576211] [2021-03-11 16:01:32,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:32,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:01:32,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049539505] [2021-03-11 16:01:32,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:01:32,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:32,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:01:32,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:01:32,957 INFO L87 Difference]: Start difference. First operand 1160 states and 3635 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:34,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:34,134 INFO L93 Difference]: Finished difference Result 1331 states and 4145 transitions. [2021-03-11 16:01:34,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-11 16:01:34,135 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:34,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:34,137 INFO L225 Difference]: With dead ends: 1331 [2021-03-11 16:01:34,137 INFO L226 Difference]: Without dead ends: 1297 [2021-03-11 16:01:34,137 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 668.6ms TimeCoverageRelationStatistics Valid=172, Invalid=1634, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 16:01:34,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2021-03-11 16:01:34,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1155. [2021-03-11 16:01:34,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 3.1412478336221836) internal successors, (3625), 1154 states have internal predecessors, (3625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:34,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 3625 transitions. [2021-03-11 16:01:34,150 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 3625 transitions. Word has length 34 [2021-03-11 16:01:34,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:34,150 INFO L480 AbstractCegarLoop]: Abstraction has 1155 states and 3625 transitions. [2021-03-11 16:01:34,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:34,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 3625 transitions. [2021-03-11 16:01:34,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:34,152 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:34,152 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:34,152 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-11 16:01:34,152 INFO L428 AbstractCegarLoop]: === Iteration 32 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:34,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:34,153 INFO L82 PathProgramCache]: Analyzing trace with hash -676848606, now seen corresponding path program 32 times [2021-03-11 16:01:34,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:34,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798077215] [2021-03-11 16:01:34,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:34,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:34,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:34,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:34,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:34,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:34,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:34,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:34,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:34,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:34,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:34,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:34,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:34,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:34,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:34,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:34,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:34,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:34,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:34,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:34,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:34,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:34,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:34,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:34,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:34,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:34,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:34,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:34,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:34,349 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:01:34,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:01:34,372 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:01:34,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:34,382 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:01:34,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:34,406 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:34,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:34,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:34,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798077215] [2021-03-11 16:01:34,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:34,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:01:34,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826388618] [2021-03-11 16:01:34,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:01:34,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:34,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:01:34,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:01:34,410 INFO L87 Difference]: Start difference. First operand 1155 states and 3625 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:36,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:36,542 INFO L93 Difference]: Finished difference Result 1746 states and 5460 transitions. [2021-03-11 16:01:36,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-11 16:01:36,542 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:36,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:36,545 INFO L225 Difference]: With dead ends: 1746 [2021-03-11 16:01:36,545 INFO L226 Difference]: Without dead ends: 1717 [2021-03-11 16:01:36,545 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 1196.3ms TimeCoverageRelationStatistics Valid=311, Invalid=2881, Unknown=0, NotChecked=0, Total=3192 [2021-03-11 16:01:36,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2021-03-11 16:01:36,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 1202. [2021-03-11 16:01:36,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 1201 states have (on average 3.126561199000833) internal successors, (3755), 1201 states have internal predecessors, (3755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:36,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 3755 transitions. [2021-03-11 16:01:36,560 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 3755 transitions. Word has length 34 [2021-03-11 16:01:36,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:36,561 INFO L480 AbstractCegarLoop]: Abstraction has 1202 states and 3755 transitions. [2021-03-11 16:01:36,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:36,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 3755 transitions. [2021-03-11 16:01:36,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:36,562 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:36,562 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:36,562 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-11 16:01:36,562 INFO L428 AbstractCegarLoop]: === Iteration 33 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:36,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:36,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1119747746, now seen corresponding path program 33 times [2021-03-11 16:01:36,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:36,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125870584] [2021-03-11 16:01:36,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:36,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:36,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:36,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:36,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:36,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:36,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:36,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:36,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:36,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:36,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:36,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:36,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:36,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:36,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:36,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:36,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:36,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:36,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:36,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:36,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:36,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:36,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:36,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:36,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:36,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:36,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:36,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:36,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:36,738 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:01:36,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:01:36,756 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:01:36,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:01:36,775 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:01:36,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:36,795 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:36,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:36,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:36,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125870584] [2021-03-11 16:01:36,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:36,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:01:36,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703207162] [2021-03-11 16:01:36,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:01:36,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:36,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:01:36,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:01:36,798 INFO L87 Difference]: Start difference. First operand 1202 states and 3755 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:39,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:39,325 INFO L93 Difference]: Finished difference Result 1884 states and 5870 transitions. [2021-03-11 16:01:39,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-03-11 16:01:39,326 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:39,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:39,329 INFO L225 Difference]: With dead ends: 1884 [2021-03-11 16:01:39,329 INFO L226 Difference]: Without dead ends: 1859 [2021-03-11 16:01:39,329 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1004 ImplicationChecksByTransitivity, 1360.8ms TimeCoverageRelationStatistics Valid=382, Invalid=3524, Unknown=0, NotChecked=0, Total=3906 [2021-03-11 16:01:39,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1859 states. [2021-03-11 16:01:39,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1859 to 1203. [2021-03-11 16:01:39,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 3.124792013311148) internal successors, (3756), 1202 states have internal predecessors, (3756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:39,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 3756 transitions. [2021-03-11 16:01:39,346 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 3756 transitions. Word has length 34 [2021-03-11 16:01:39,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:39,346 INFO L480 AbstractCegarLoop]: Abstraction has 1203 states and 3756 transitions. [2021-03-11 16:01:39,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:39,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 3756 transitions. [2021-03-11 16:01:39,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:39,348 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:39,348 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:39,348 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-11 16:01:39,349 INFO L428 AbstractCegarLoop]: === Iteration 34 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:39,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:39,349 INFO L82 PathProgramCache]: Analyzing trace with hash -826906764, now seen corresponding path program 34 times [2021-03-11 16:01:39,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:39,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389528835] [2021-03-11 16:01:39,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:39,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:39,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:39,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:39,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:39,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:39,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:39,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:39,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:39,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:39,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:39,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:39,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:39,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:39,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:39,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:39,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:39,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:39,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:39,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:39,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:39,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:39,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:39,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:39,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:39,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:39,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:39,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:39,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:39,528 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:01:39,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:01:39,546 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:01:39,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:01:39,564 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:01:39,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:39,585 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:39,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:39,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:39,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389528835] [2021-03-11 16:01:39,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:39,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:01:39,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787955883] [2021-03-11 16:01:39,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:01:39,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:39,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:01:39,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:01:39,588 INFO L87 Difference]: Start difference. First operand 1203 states and 3756 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:41,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:41,980 INFO L93 Difference]: Finished difference Result 1844 states and 5757 transitions. [2021-03-11 16:01:41,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-03-11 16:01:41,981 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:41,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:41,984 INFO L225 Difference]: With dead ends: 1844 [2021-03-11 16:01:41,984 INFO L226 Difference]: Without dead ends: 1816 [2021-03-11 16:01:41,984 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 1248.6ms TimeCoverageRelationStatistics Valid=354, Invalid=3306, Unknown=0, NotChecked=0, Total=3660 [2021-03-11 16:01:41,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2021-03-11 16:01:41,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 1201. [2021-03-11 16:01:41,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1200 states have (on average 3.1266666666666665) internal successors, (3752), 1200 states have internal predecessors, (3752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:42,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 3752 transitions. [2021-03-11 16:01:42,001 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 3752 transitions. Word has length 34 [2021-03-11 16:01:42,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:42,001 INFO L480 AbstractCegarLoop]: Abstraction has 1201 states and 3752 transitions. [2021-03-11 16:01:42,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:42,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 3752 transitions. [2021-03-11 16:01:42,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:42,003 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:42,003 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:42,003 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-11 16:01:42,004 INFO L428 AbstractCegarLoop]: === Iteration 35 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:42,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:42,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1887348958, now seen corresponding path program 35 times [2021-03-11 16:01:42,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:42,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931043672] [2021-03-11 16:01:42,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:42,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:42,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:42,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:42,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:42,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:42,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:42,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:42,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:42,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:42,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:42,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:42,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:42,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:42,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:42,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:42,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:42,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:42,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:42,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:42,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:42,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:42,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:42,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:42,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:42,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:42,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:42,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:42,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:42,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:42,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:42,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:42,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:42,212 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:01:42,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:42,232 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:42,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:42,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:42,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931043672] [2021-03-11 16:01:42,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:42,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:01:42,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476754878] [2021-03-11 16:01:42,235 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:01:42,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:42,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:01:42,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:01:42,235 INFO L87 Difference]: Start difference. First operand 1201 states and 3752 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:43,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:43,552 INFO L93 Difference]: Finished difference Result 1480 states and 4512 transitions. [2021-03-11 16:01:43,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 16:01:43,553 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:43,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:43,555 INFO L225 Difference]: With dead ends: 1480 [2021-03-11 16:01:43,555 INFO L226 Difference]: Without dead ends: 1451 [2021-03-11 16:01:43,555 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 731.2ms TimeCoverageRelationStatistics Valid=189, Invalid=1703, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 16:01:43,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2021-03-11 16:01:43,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1216. [2021-03-11 16:01:43,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 1215 states have (on average 3.123456790123457) internal successors, (3795), 1215 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:43,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 3795 transitions. [2021-03-11 16:01:43,571 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 3795 transitions. Word has length 34 [2021-03-11 16:01:43,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:43,571 INFO L480 AbstractCegarLoop]: Abstraction has 1216 states and 3795 transitions. [2021-03-11 16:01:43,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:43,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 3795 transitions. [2021-03-11 16:01:43,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:43,573 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:43,573 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:43,573 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-11 16:01:43,573 INFO L428 AbstractCegarLoop]: === Iteration 36 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:43,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:43,573 INFO L82 PathProgramCache]: Analyzing trace with hash -854444452, now seen corresponding path program 36 times [2021-03-11 16:01:43,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:43,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606088588] [2021-03-11 16:01:43,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:43,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:43,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:43,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:43,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:43,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:43,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:43,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:43,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:43,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:43,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:43,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:43,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:43,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:43,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:43,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:43,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:43,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:43,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:43,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:43,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:43,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:43,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:43,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:43,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:43,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:43,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:43,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:43,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:43,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:43,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:43,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:43,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:43,811 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:01:43,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:43,832 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:43,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:43,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:43,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606088588] [2021-03-11 16:01:43,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:43,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:01:43,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86077250] [2021-03-11 16:01:43,834 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:01:43,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:43,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:01:43,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:01:43,835 INFO L87 Difference]: Start difference. First operand 1216 states and 3795 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:44,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:44,982 INFO L93 Difference]: Finished difference Result 1442 states and 4399 transitions. [2021-03-11 16:01:44,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 16:01:44,982 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:44,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:44,984 INFO L225 Difference]: With dead ends: 1442 [2021-03-11 16:01:44,984 INFO L226 Difference]: Without dead ends: 1397 [2021-03-11 16:01:44,985 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 670.7ms TimeCoverageRelationStatistics Valid=169, Invalid=1553, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 16:01:44,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1397 states. [2021-03-11 16:01:44,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1397 to 1204. [2021-03-11 16:01:44,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1204 states, 1203 states have (on average 3.1246882793017456) internal successors, (3759), 1203 states have internal predecessors, (3759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:44,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 3759 transitions. [2021-03-11 16:01:44,998 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 3759 transitions. Word has length 34 [2021-03-11 16:01:44,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:44,998 INFO L480 AbstractCegarLoop]: Abstraction has 1204 states and 3759 transitions. [2021-03-11 16:01:44,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:44,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 3759 transitions. [2021-03-11 16:01:45,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:45,000 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:45,000 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:45,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-11 16:01:45,000 INFO L428 AbstractCegarLoop]: === Iteration 37 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:45,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:45,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1485276646, now seen corresponding path program 37 times [2021-03-11 16:01:45,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:45,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274455972] [2021-03-11 16:01:45,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:45,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:45,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:45,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:45,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:45,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:45,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:45,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:45,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:45,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:45,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:45,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:45,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:45,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:45,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:45,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:45,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:45,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:45,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:45,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:45,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:45,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:45,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:45,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:45,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:45,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:45,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:45,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:45,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:45,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:45,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:45,224 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:01:45,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:01:45,248 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:01:45,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:45,280 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:45,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:45,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:45,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274455972] [2021-03-11 16:01:45,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:45,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:01:45,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106563619] [2021-03-11 16:01:45,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:01:45,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:45,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:01:45,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:01:45,284 INFO L87 Difference]: Start difference. First operand 1204 states and 3759 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:47,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:47,411 INFO L93 Difference]: Finished difference Result 1843 states and 5719 transitions. [2021-03-11 16:01:47,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-03-11 16:01:47,411 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:47,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:47,414 INFO L225 Difference]: With dead ends: 1843 [2021-03-11 16:01:47,414 INFO L226 Difference]: Without dead ends: 1818 [2021-03-11 16:01:47,415 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 1128.4ms TimeCoverageRelationStatistics Valid=307, Invalid=2999, Unknown=0, NotChecked=0, Total=3306 [2021-03-11 16:01:47,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2021-03-11 16:01:47,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1230. [2021-03-11 16:01:47,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 1229 states have (on average 3.1236777868185515) internal successors, (3839), 1229 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:47,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 3839 transitions. [2021-03-11 16:01:47,431 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 3839 transitions. Word has length 34 [2021-03-11 16:01:47,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:47,431 INFO L480 AbstractCegarLoop]: Abstraction has 1230 states and 3839 transitions. [2021-03-11 16:01:47,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:47,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 3839 transitions. [2021-03-11 16:01:47,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:47,432 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:47,433 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:47,433 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-11 16:01:47,433 INFO L428 AbstractCegarLoop]: === Iteration 38 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:47,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:47,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1778117628, now seen corresponding path program 38 times [2021-03-11 16:01:47,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:47,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615571472] [2021-03-11 16:01:47,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:47,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:47,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:47,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:47,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:47,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:47,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:47,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:47,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:47,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:47,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:47,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:47,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:47,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:47,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:47,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:47,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:47,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:47,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:47,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:47,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:47,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:47,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:47,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:47,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:47,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:47,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:47,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:47,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:47,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:47,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:47,650 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:01:47,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:01:47,674 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:01:47,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:47,700 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:47,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:47,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:47,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615571472] [2021-03-11 16:01:47,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:47,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:01:47,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062975139] [2021-03-11 16:01:47,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:01:47,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:47,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:01:47,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:01:47,704 INFO L87 Difference]: Start difference. First operand 1230 states and 3839 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:49,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:49,357 INFO L93 Difference]: Finished difference Result 1580 states and 4816 transitions. [2021-03-11 16:01:49,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-11 16:01:49,358 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:49,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:49,360 INFO L225 Difference]: With dead ends: 1580 [2021-03-11 16:01:49,360 INFO L226 Difference]: Without dead ends: 1553 [2021-03-11 16:01:49,360 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 918.6ms TimeCoverageRelationStatistics Valid=223, Invalid=2129, Unknown=0, NotChecked=0, Total=2352 [2021-03-11 16:01:49,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2021-03-11 16:01:49,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1230. [2021-03-11 16:01:49,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 1229 states have (on average 3.1228641171684295) internal successors, (3838), 1229 states have internal predecessors, (3838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:49,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 3838 transitions. [2021-03-11 16:01:49,376 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 3838 transitions. Word has length 34 [2021-03-11 16:01:49,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:49,376 INFO L480 AbstractCegarLoop]: Abstraction has 1230 states and 3838 transitions. [2021-03-11 16:01:49,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:49,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 3838 transitions. [2021-03-11 16:01:49,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:49,378 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:49,378 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:49,378 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-11 16:01:49,378 INFO L428 AbstractCegarLoop]: === Iteration 39 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:49,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:49,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1699415904, now seen corresponding path program 39 times [2021-03-11 16:01:49,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:49,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594011497] [2021-03-11 16:01:49,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:49,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:49,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:49,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:49,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:49,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:49,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:49,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:49,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:49,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:49,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:49,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:49,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:49,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:49,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:49,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:49,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:49,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:49,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:49,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:49,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:49,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:49,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:49,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:49,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:49,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:49,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:49,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:49,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:49,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:49,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:49,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:49,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:49,607 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:01:49,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:49,635 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:49,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:49,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:49,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594011497] [2021-03-11 16:01:49,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:49,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:01:49,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314069906] [2021-03-11 16:01:49,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:01:49,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:49,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:01:49,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:01:49,639 INFO L87 Difference]: Start difference. First operand 1230 states and 3838 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:50,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:50,970 INFO L93 Difference]: Finished difference Result 1485 states and 4514 transitions. [2021-03-11 16:01:50,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 16:01:50,971 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:50,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:50,973 INFO L225 Difference]: With dead ends: 1485 [2021-03-11 16:01:50,973 INFO L226 Difference]: Without dead ends: 1444 [2021-03-11 16:01:50,973 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 779.3ms TimeCoverageRelationStatistics Valid=193, Invalid=1787, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 16:01:50,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2021-03-11 16:01:50,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1229. [2021-03-11 16:01:50,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1228 states have (on average 3.1237785016286646) internal successors, (3836), 1228 states have internal predecessors, (3836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:50,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 3836 transitions. [2021-03-11 16:01:50,991 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 3836 transitions. Word has length 34 [2021-03-11 16:01:50,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:50,991 INFO L480 AbstractCegarLoop]: Abstraction has 1229 states and 3836 transitions. [2021-03-11 16:01:50,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:50,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 3836 transitions. [2021-03-11 16:01:50,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:50,993 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:50,993 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:50,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-11 16:01:50,993 INFO L428 AbstractCegarLoop]: === Iteration 40 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:50,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:50,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1489656006, now seen corresponding path program 40 times [2021-03-11 16:01:50,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:50,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916066534] [2021-03-11 16:01:50,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:51,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:51,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:51,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:51,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:51,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:51,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:51,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:51,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:51,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:51,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:51,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:51,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:51,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:51,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:51,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:51,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:51,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:51,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:51,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:51,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:51,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:51,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:51,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:51,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:51,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:51,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:51,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:51,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:51,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:51,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:51,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:51,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:51,241 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:01:51,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:51,266 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:51,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:51,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:51,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916066534] [2021-03-11 16:01:51,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:51,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:01:51,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826856224] [2021-03-11 16:01:51,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:01:51,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:51,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:01:51,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:01:51,269 INFO L87 Difference]: Start difference. First operand 1229 states and 3836 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:52,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:52,529 INFO L93 Difference]: Finished difference Result 1444 states and 4406 transitions. [2021-03-11 16:01:52,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 16:01:52,530 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:52,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:52,532 INFO L225 Difference]: With dead ends: 1444 [2021-03-11 16:01:52,532 INFO L226 Difference]: Without dead ends: 1418 [2021-03-11 16:01:52,532 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 732.5ms TimeCoverageRelationStatistics Valid=163, Invalid=1559, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 16:01:52,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2021-03-11 16:01:52,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1231. [2021-03-11 16:01:52,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 1230 states have (on average 3.1219512195121952) internal successors, (3840), 1230 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:52,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 3840 transitions. [2021-03-11 16:01:52,546 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 3840 transitions. Word has length 34 [2021-03-11 16:01:52,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:52,546 INFO L480 AbstractCegarLoop]: Abstraction has 1231 states and 3840 transitions. [2021-03-11 16:01:52,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:52,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 3840 transitions. [2021-03-11 16:01:52,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:52,548 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:52,548 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:52,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-11 16:01:52,548 INFO L428 AbstractCegarLoop]: === Iteration 41 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:52,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:52,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1711219702, now seen corresponding path program 41 times [2021-03-11 16:01:52,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:52,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136610377] [2021-03-11 16:01:52,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:52,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:52,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:52,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:52,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:52,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:52,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:52,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:52,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:52,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:52,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:52,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:52,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:52,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:52,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:52,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:52,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:52,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:52,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:52,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:52,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:52,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:52,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:52,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:52,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:52,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:52,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:52,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:52,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:52,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:52,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:52,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:52,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:52,792 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:01:52,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:52,818 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:52,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:52,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136610377] [2021-03-11 16:01:52,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:52,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:01:52,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467480499] [2021-03-11 16:01:52,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:01:52,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:52,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:01:52,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:01:52,822 INFO L87 Difference]: Start difference. First operand 1231 states and 3840 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:54,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:54,013 INFO L93 Difference]: Finished difference Result 1439 states and 4393 transitions. [2021-03-11 16:01:54,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 16:01:54,013 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:54,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:54,015 INFO L225 Difference]: With dead ends: 1439 [2021-03-11 16:01:54,015 INFO L226 Difference]: Without dead ends: 1400 [2021-03-11 16:01:54,015 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 720.6ms TimeCoverageRelationStatistics Valid=163, Invalid=1559, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 16:01:54,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2021-03-11 16:01:54,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1223. [2021-03-11 16:01:54,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1222 states have (on average 3.1317512274959083) internal successors, (3827), 1222 states have internal predecessors, (3827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:54,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 3827 transitions. [2021-03-11 16:01:54,029 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 3827 transitions. Word has length 34 [2021-03-11 16:01:54,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:54,029 INFO L480 AbstractCegarLoop]: Abstraction has 1223 states and 3827 transitions. [2021-03-11 16:01:54,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:54,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 3827 transitions. [2021-03-11 16:01:54,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:54,030 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:54,031 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:54,031 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-11 16:01:54,031 INFO L428 AbstractCegarLoop]: === Iteration 42 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:54,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:54,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1194691424, now seen corresponding path program 42 times [2021-03-11 16:01:54,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:54,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084016408] [2021-03-11 16:01:54,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:54,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:54,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:54,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:54,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:54,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:54,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:54,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:54,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:54,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:54,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:54,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:54,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:54,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:54,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:54,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:54,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:54,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:54,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:54,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:54,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:54,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:54,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:54,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:54,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:54,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:54,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:54,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:54,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:54,238 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:01:54,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:01:54,257 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:01:54,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:01:54,276 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:01:54,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:54,297 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:54,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:54,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:54,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084016408] [2021-03-11 16:01:54,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:54,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:01:54,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565583788] [2021-03-11 16:01:54,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:01:54,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:54,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:01:54,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:01:54,300 INFO L87 Difference]: Start difference. First operand 1223 states and 3827 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:56,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:56,217 INFO L93 Difference]: Finished difference Result 1543 states and 4806 transitions. [2021-03-11 16:01:56,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-11 16:01:56,218 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:56,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:56,219 INFO L225 Difference]: With dead ends: 1543 [2021-03-11 16:01:56,220 INFO L226 Difference]: Without dead ends: 1518 [2021-03-11 16:01:56,220 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 1116.6ms TimeCoverageRelationStatistics Valid=281, Invalid=2475, Unknown=0, NotChecked=0, Total=2756 [2021-03-11 16:01:56,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-03-11 16:01:56,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1228. [2021-03-11 16:01:56,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 1227 states have (on average 3.12958435207824) internal successors, (3840), 1227 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:56,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 3840 transitions. [2021-03-11 16:01:56,238 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 3840 transitions. Word has length 34 [2021-03-11 16:01:56,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:56,238 INFO L480 AbstractCegarLoop]: Abstraction has 1228 states and 3840 transitions. [2021-03-11 16:01:56,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:56,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 3840 transitions. [2021-03-11 16:01:56,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:56,240 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:56,240 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:56,240 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-11 16:01:56,241 INFO L428 AbstractCegarLoop]: === Iteration 43 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:56,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:56,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1487532406, now seen corresponding path program 43 times [2021-03-11 16:01:56,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:56,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997310877] [2021-03-11 16:01:56,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:56,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:56,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:56,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:56,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:56,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:56,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:56,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:56,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:56,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:56,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:56,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:56,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:56,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:56,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:56,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:56,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:56,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:56,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:56,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:56,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:56,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:56,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:56,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:56,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:56,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:56,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:56,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:56,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:56,438 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:01:56,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:01:56,460 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:01:56,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:01:56,484 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:01:56,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:56,510 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:56,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:56,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997310877] [2021-03-11 16:01:56,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:56,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:01:56,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941910417] [2021-03-11 16:01:56,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:01:56,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:56,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:01:56,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:01:56,514 INFO L87 Difference]: Start difference. First operand 1228 states and 3840 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:58,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:58,328 INFO L93 Difference]: Finished difference Result 1520 states and 4699 transitions. [2021-03-11 16:01:58,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-11 16:01:58,329 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:58,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:58,331 INFO L225 Difference]: With dead ends: 1520 [2021-03-11 16:01:58,331 INFO L226 Difference]: Without dead ends: 1493 [2021-03-11 16:01:58,332 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 1056.9ms TimeCoverageRelationStatistics Valid=269, Invalid=2383, Unknown=0, NotChecked=0, Total=2652 [2021-03-11 16:01:58,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2021-03-11 16:01:58,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 1228. [2021-03-11 16:01:58,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 1227 states have (on average 3.128769356153219) internal successors, (3839), 1227 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:58,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 3839 transitions. [2021-03-11 16:01:58,351 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 3839 transitions. Word has length 34 [2021-03-11 16:01:58,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:58,351 INFO L480 AbstractCegarLoop]: Abstraction has 1228 states and 3839 transitions. [2021-03-11 16:01:58,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:58,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 3839 transitions. [2021-03-11 16:01:58,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:58,353 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:58,353 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:58,353 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-11 16:01:58,353 INFO L428 AbstractCegarLoop]: === Iteration 44 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:58,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:58,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1769591636, now seen corresponding path program 44 times [2021-03-11 16:01:58,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:58,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664057566] [2021-03-11 16:01:58,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:58,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:58,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:58,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:58,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:58,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:58,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:58,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:58,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:58,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:58,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:58,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:58,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:58,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:58,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:58,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:58,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:58,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:58,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:58,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:58,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:58,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:58,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:58,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:58,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:58,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:58,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:58,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:58,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:58,522 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:01:58,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:01:58,540 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:01:58,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:58,560 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:01:58,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:01:58,581 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:01:58,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:58,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:01:58,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664057566] [2021-03-11 16:01:58,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:01:58,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:01:58,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182852356] [2021-03-11 16:01:58,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:01:58,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:01:58,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:01:58,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:01:58,584 INFO L87 Difference]: Start difference. First operand 1228 states and 3839 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:59,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:01:59,773 INFO L93 Difference]: Finished difference Result 1426 states and 4409 transitions. [2021-03-11 16:01:59,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 16:01:59,774 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:01:59,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:01:59,776 INFO L225 Difference]: With dead ends: 1426 [2021-03-11 16:01:59,776 INFO L226 Difference]: Without dead ends: 1394 [2021-03-11 16:01:59,776 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 676.8ms TimeCoverageRelationStatistics Valid=160, Invalid=1480, Unknown=0, NotChecked=0, Total=1640 [2021-03-11 16:01:59,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2021-03-11 16:01:59,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1232. [2021-03-11 16:01:59,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1231 states have (on average 3.1267262388302193) internal successors, (3849), 1231 states have internal predecessors, (3849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:59,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 3849 transitions. [2021-03-11 16:01:59,790 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 3849 transitions. Word has length 34 [2021-03-11 16:01:59,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:01:59,790 INFO L480 AbstractCegarLoop]: Abstraction has 1232 states and 3849 transitions. [2021-03-11 16:01:59,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:01:59,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 3849 transitions. [2021-03-11 16:01:59,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:01:59,792 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:01:59,792 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:01:59,792 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-03-11 16:01:59,792 INFO L428 AbstractCegarLoop]: === Iteration 45 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:01:59,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:01:59,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1264801460, now seen corresponding path program 45 times [2021-03-11 16:01:59,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:01:59,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119765530] [2021-03-11 16:01:59,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:01:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:01:59,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:59,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:01:59,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:59,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:59,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:59,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:01:59,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:59,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:59,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:59,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:59,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:59,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:59,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:59,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:01:59,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:59,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:59,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:59,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:59,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:59,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:59,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:59,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:01:59,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:59,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:59,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:59,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:59,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:59,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:01:59,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:01:59,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:00,005 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:00,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:00,025 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:00,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:00,046 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:00,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:00,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:00,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119765530] [2021-03-11 16:02:00,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:00,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:02:00,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503290693] [2021-03-11 16:02:00,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:02:00,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:00,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:02:00,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:02:00,049 INFO L87 Difference]: Start difference. First operand 1232 states and 3849 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:01,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:01,971 INFO L93 Difference]: Finished difference Result 1579 states and 4864 transitions. [2021-03-11 16:02:01,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-03-11 16:02:01,971 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:01,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:01,973 INFO L225 Difference]: With dead ends: 1579 [2021-03-11 16:02:01,973 INFO L226 Difference]: Without dead ends: 1554 [2021-03-11 16:02:01,974 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 1074.2ms TimeCoverageRelationStatistics Valid=275, Invalid=2805, Unknown=0, NotChecked=0, Total=3080 [2021-03-11 16:02:01,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-03-11 16:02:01,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1232. [2021-03-11 16:02:01,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1231 states have (on average 3.1267262388302193) internal successors, (3849), 1231 states have internal predecessors, (3849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:01,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 3849 transitions. [2021-03-11 16:02:01,992 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 3849 transitions. Word has length 34 [2021-03-11 16:02:01,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:01,992 INFO L480 AbstractCegarLoop]: Abstraction has 1232 states and 3849 transitions. [2021-03-11 16:02:01,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:01,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 3849 transitions. [2021-03-11 16:02:01,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:01,995 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:01,995 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:01,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-03-11 16:02:01,995 INFO L428 AbstractCegarLoop]: === Iteration 46 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:01,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:01,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1557642442, now seen corresponding path program 46 times [2021-03-11 16:02:01,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:01,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019551650] [2021-03-11 16:02:01,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:02,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:02,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:02,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:02,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:02,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:02,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:02,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:02,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:02,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:02,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:02,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:02,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:02,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:02,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:02,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:02,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:02,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:02,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:02,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:02,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:02,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:02,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:02,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:02,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:02,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:02,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:02,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:02,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:02,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:02,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:02,220 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:02,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:02,240 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:02,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:02,264 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:02,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:02,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019551650] [2021-03-11 16:02:02,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:02,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:02:02,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713636185] [2021-03-11 16:02:02,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:02:02,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:02,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:02:02,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:02:02,267 INFO L87 Difference]: Start difference. First operand 1232 states and 3849 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:03,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:03,992 INFO L93 Difference]: Finished difference Result 1547 states and 4730 transitions. [2021-03-11 16:02:03,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-11 16:02:03,992 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:03,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:03,994 INFO L225 Difference]: With dead ends: 1547 [2021-03-11 16:02:03,994 INFO L226 Difference]: Without dead ends: 1520 [2021-03-11 16:02:03,995 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 1004.2ms TimeCoverageRelationStatistics Valid=252, Invalid=2504, Unknown=0, NotChecked=0, Total=2756 [2021-03-11 16:02:03,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-03-11 16:02:04,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1233. [2021-03-11 16:02:04,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 1232 states have (on average 3.125811688311688) internal successors, (3851), 1232 states have internal predecessors, (3851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:04,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 3851 transitions. [2021-03-11 16:02:04,015 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 3851 transitions. Word has length 34 [2021-03-11 16:02:04,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:04,015 INFO L480 AbstractCegarLoop]: Abstraction has 1233 states and 3851 transitions. [2021-03-11 16:02:04,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:04,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 3851 transitions. [2021-03-11 16:02:04,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:04,017 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:04,017 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:04,017 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-11 16:02:04,017 INFO L428 AbstractCegarLoop]: === Iteration 47 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:04,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:04,018 INFO L82 PathProgramCache]: Analyzing trace with hash 821902320, now seen corresponding path program 47 times [2021-03-11 16:02:04,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:04,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235766633] [2021-03-11 16:02:04,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:04,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:04,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:04,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:04,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:04,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:04,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:04,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:04,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:04,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:04,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:04,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:04,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:04,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:04,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:04,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:04,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:04,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:04,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:04,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:04,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:04,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:04,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:04,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:04,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:04,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:04,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:04,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:04,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:04,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:04,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:04,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:04,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:04,272 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:04,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:04,293 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:04,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:04,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:04,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235766633] [2021-03-11 16:02:04,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:04,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:02:04,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256962288] [2021-03-11 16:02:04,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:02:04,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:04,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:02:04,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:02:04,297 INFO L87 Difference]: Start difference. First operand 1233 states and 3851 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:05,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:05,702 INFO L93 Difference]: Finished difference Result 1471 states and 4519 transitions. [2021-03-11 16:02:05,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-11 16:02:05,703 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:05,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:05,705 INFO L225 Difference]: With dead ends: 1471 [2021-03-11 16:02:05,705 INFO L226 Difference]: Without dead ends: 1434 [2021-03-11 16:02:05,706 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 850.7ms TimeCoverageRelationStatistics Valid=201, Invalid=1961, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 16:02:05,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2021-03-11 16:02:05,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1234. [2021-03-11 16:02:05,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1233 states have (on average 3.124087591240876) internal successors, (3852), 1233 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:05,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3852 transitions. [2021-03-11 16:02:05,720 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3852 transitions. Word has length 34 [2021-03-11 16:02:05,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:05,720 INFO L480 AbstractCegarLoop]: Abstraction has 1234 states and 3852 transitions. [2021-03-11 16:02:05,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:05,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3852 transitions. [2021-03-11 16:02:05,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:05,722 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:05,722 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:05,722 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-11 16:02:05,722 INFO L428 AbstractCegarLoop]: === Iteration 48 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:05,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:05,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1269180820, now seen corresponding path program 48 times [2021-03-11 16:02:05,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:05,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601144119] [2021-03-11 16:02:05,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:05,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:05,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:05,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:05,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:05,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:05,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:05,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:05,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:05,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:05,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:05,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:05,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:05,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:05,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:05,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:05,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:05,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:05,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:05,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:05,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:05,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:05,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:05,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:05,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:05,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:05,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:05,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:05,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:05,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:05,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:05,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:05,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:05,938 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:05,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:05,960 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:05,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:05,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:05,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601144119] [2021-03-11 16:02:05,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:05,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:02:05,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332979076] [2021-03-11 16:02:05,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:02:05,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:05,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:02:05,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:02:05,963 INFO L87 Difference]: Start difference. First operand 1234 states and 3852 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:07,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:07,267 INFO L93 Difference]: Finished difference Result 1440 states and 4430 transitions. [2021-03-11 16:02:07,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 16:02:07,268 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:07,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:07,270 INFO L225 Difference]: With dead ends: 1440 [2021-03-11 16:02:07,270 INFO L226 Difference]: Without dead ends: 1403 [2021-03-11 16:02:07,270 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 735.7ms TimeCoverageRelationStatistics Valid=181, Invalid=1711, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 16:02:07,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2021-03-11 16:02:07,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1233. [2021-03-11 16:02:07,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 1232 states have (on average 3.125) internal successors, (3850), 1232 states have internal predecessors, (3850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:07,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 3850 transitions. [2021-03-11 16:02:07,289 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 3850 transitions. Word has length 34 [2021-03-11 16:02:07,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:07,289 INFO L480 AbstractCegarLoop]: Abstraction has 1233 states and 3850 transitions. [2021-03-11 16:02:07,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:07,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 3850 transitions. [2021-03-11 16:02:07,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:07,291 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:07,291 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:07,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-03-11 16:02:07,291 INFO L428 AbstractCegarLoop]: === Iteration 49 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:07,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:07,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1417215946, now seen corresponding path program 49 times [2021-03-11 16:02:07,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:07,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999517658] [2021-03-11 16:02:07,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:07,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:07,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:07,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:07,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:07,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:07,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:07,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:07,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:07,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:07,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:07,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:07,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:07,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:07,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:07,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:07,523 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:07,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:07,548 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:07,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:07,575 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:07,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:07,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:07,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999517658] [2021-03-11 16:02:07,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:07,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:02:07,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144776972] [2021-03-11 16:02:07,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:02:07,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:07,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:02:07,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:02:07,579 INFO L87 Difference]: Start difference. First operand 1233 states and 3850 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:08,766 INFO L93 Difference]: Finished difference Result 1406 states and 4336 transitions. [2021-03-11 16:02:08,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 16:02:08,767 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:08,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:08,769 INFO L225 Difference]: With dead ends: 1406 [2021-03-11 16:02:08,769 INFO L226 Difference]: Without dead ends: 1375 [2021-03-11 16:02:08,769 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 707.7ms TimeCoverageRelationStatistics Valid=154, Invalid=1486, Unknown=0, NotChecked=0, Total=1640 [2021-03-11 16:02:08,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2021-03-11 16:02:08,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1235. [2021-03-11 16:02:08,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 1234 states have (on average 3.1231766612641816) internal successors, (3854), 1234 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 3854 transitions. [2021-03-11 16:02:08,789 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 3854 transitions. Word has length 34 [2021-03-11 16:02:08,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:08,789 INFO L480 AbstractCegarLoop]: Abstraction has 1235 states and 3854 transitions. [2021-03-11 16:02:08,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 3854 transitions. [2021-03-11 16:02:08,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:08,791 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:08,791 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:08,791 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-03-11 16:02:08,791 INFO L428 AbstractCegarLoop]: === Iteration 50 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:08,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:08,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1948773538, now seen corresponding path program 50 times [2021-03-11 16:02:08,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:08,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583079938] [2021-03-11 16:02:08,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:08,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:08,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:08,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:08,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:08,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:08,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:08,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:08,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:08,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:08,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:08,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:08,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:08,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:08,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:08,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:09,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:09,049 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:09,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:09,074 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:09,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:09,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:09,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583079938] [2021-03-11 16:02:09,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:09,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:02:09,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545075403] [2021-03-11 16:02:09,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:02:09,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:09,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:02:09,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:02:09,077 INFO L87 Difference]: Start difference. First operand 1235 states and 3854 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:10,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:10,309 INFO L93 Difference]: Finished difference Result 1411 states and 4355 transitions. [2021-03-11 16:02:10,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-11 16:02:10,310 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:10,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:10,312 INFO L225 Difference]: With dead ends: 1411 [2021-03-11 16:02:10,312 INFO L226 Difference]: Without dead ends: 1372 [2021-03-11 16:02:10,312 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 740.0ms TimeCoverageRelationStatistics Valid=168, Invalid=1638, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 16:02:10,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2021-03-11 16:02:10,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1232. [2021-03-11 16:02:10,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1231 states have (on average 3.12591389114541) internal successors, (3848), 1231 states have internal predecessors, (3848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:10,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 3848 transitions. [2021-03-11 16:02:10,326 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 3848 transitions. Word has length 34 [2021-03-11 16:02:10,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:10,326 INFO L480 AbstractCegarLoop]: Abstraction has 1232 states and 3848 transitions. [2021-03-11 16:02:10,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:10,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 3848 transitions. [2021-03-11 16:02:10,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:10,328 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:10,328 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:10,328 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-03-11 16:02:10,328 INFO L428 AbstractCegarLoop]: === Iteration 51 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:10,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:10,328 INFO L82 PathProgramCache]: Analyzing trace with hash -727820512, now seen corresponding path program 51 times [2021-03-11 16:02:10,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:10,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454776524] [2021-03-11 16:02:10,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:10,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:10,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:10,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:10,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:10,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:10,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:10,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:10,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:10,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:10,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:10,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:10,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:10,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:10,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:10,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:10,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:10,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:10,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:10,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:10,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:10,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:10,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:10,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:10,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:10,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:10,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:10,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:10,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:10,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:10,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:10,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:10,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:10,564 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:10,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:10,590 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:10,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:10,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:10,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454776524] [2021-03-11 16:02:10,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:10,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:02:10,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149020803] [2021-03-11 16:02:10,594 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:02:10,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:10,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:02:10,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:02:10,595 INFO L87 Difference]: Start difference. First operand 1232 states and 3848 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:12,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:12,275 INFO L93 Difference]: Finished difference Result 1496 states and 4625 transitions. [2021-03-11 16:02:12,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-11 16:02:12,276 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:12,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:12,278 INFO L225 Difference]: With dead ends: 1496 [2021-03-11 16:02:12,278 INFO L226 Difference]: Without dead ends: 1447 [2021-03-11 16:02:12,278 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 971.6ms TimeCoverageRelationStatistics Valid=248, Invalid=2508, Unknown=0, NotChecked=0, Total=2756 [2021-03-11 16:02:12,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2021-03-11 16:02:12,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1233. [2021-03-11 16:02:12,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 1232 states have (on average 3.125) internal successors, (3850), 1232 states have internal predecessors, (3850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:12,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 3850 transitions. [2021-03-11 16:02:12,296 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 3850 transitions. Word has length 34 [2021-03-11 16:02:12,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:12,296 INFO L480 AbstractCegarLoop]: Abstraction has 1233 states and 3850 transitions. [2021-03-11 16:02:12,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:12,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 3850 transitions. [2021-03-11 16:02:12,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:12,298 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:12,298 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:12,298 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-03-11 16:02:12,299 INFO L428 AbstractCegarLoop]: === Iteration 52 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:12,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:12,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1052645842, now seen corresponding path program 52 times [2021-03-11 16:02:12,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:12,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032586994] [2021-03-11 16:02:12,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:12,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:12,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:12,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:12,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:12,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:12,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:12,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:12,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:12,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:12,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:12,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:12,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:12,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:12,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:12,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:12,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:12,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:12,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:12,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:12,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:12,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:12,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:12,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:12,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:12,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:12,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:12,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:12,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:12,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:12,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:12,532 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:12,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:12,552 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:12,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:12,574 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:12,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:12,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:12,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032586994] [2021-03-11 16:02:12,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:12,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:02:12,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509685992] [2021-03-11 16:02:12,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:02:12,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:12,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:02:12,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:02:12,577 INFO L87 Difference]: Start difference. First operand 1233 states and 3850 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:15,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:15,183 INFO L93 Difference]: Finished difference Result 1683 states and 5197 transitions. [2021-03-11 16:02:15,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-03-11 16:02:15,183 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:15,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:15,186 INFO L225 Difference]: With dead ends: 1683 [2021-03-11 16:02:15,186 INFO L226 Difference]: Without dead ends: 1658 [2021-03-11 16:02:15,186 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 1255.3ms TimeCoverageRelationStatistics Valid=328, Invalid=3578, Unknown=0, NotChecked=0, Total=3906 [2021-03-11 16:02:15,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2021-03-11 16:02:15,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1234. [2021-03-11 16:02:15,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1233 states have (on average 3.1248986212489864) internal successors, (3853), 1233 states have internal predecessors, (3853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:15,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3853 transitions. [2021-03-11 16:02:15,201 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3853 transitions. Word has length 34 [2021-03-11 16:02:15,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:15,202 INFO L480 AbstractCegarLoop]: Abstraction has 1234 states and 3853 transitions. [2021-03-11 16:02:15,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:15,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3853 transitions. [2021-03-11 16:02:15,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:15,204 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:15,204 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:15,204 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-03-11 16:02:15,204 INFO L428 AbstractCegarLoop]: === Iteration 53 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:15,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:15,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1345486824, now seen corresponding path program 53 times [2021-03-11 16:02:15,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:15,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500619209] [2021-03-11 16:02:15,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:15,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:15,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:15,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:15,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:15,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:15,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:15,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:15,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:15,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:15,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:15,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:15,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:15,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:15,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:15,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:15,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:15,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:15,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:15,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:15,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:15,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:15,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:15,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:15,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:15,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:15,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:15,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:15,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:15,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:15,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:15,454 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:15,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:15,479 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:15,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:15,521 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:15,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:15,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:15,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500619209] [2021-03-11 16:02:15,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:15,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:02:15,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768739639] [2021-03-11 16:02:15,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:02:15,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:15,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:02:15,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:02:15,525 INFO L87 Difference]: Start difference. First operand 1234 states and 3853 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:17,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:17,757 INFO L93 Difference]: Finished difference Result 1604 states and 4919 transitions. [2021-03-11 16:02:17,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-03-11 16:02:17,758 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:17,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:17,760 INFO L225 Difference]: With dead ends: 1604 [2021-03-11 16:02:17,760 INFO L226 Difference]: Without dead ends: 1577 [2021-03-11 16:02:17,760 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 1160.8ms TimeCoverageRelationStatistics Valid=296, Invalid=3126, Unknown=0, NotChecked=0, Total=3422 [2021-03-11 16:02:17,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2021-03-11 16:02:17,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1234. [2021-03-11 16:02:17,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1233 states have (on average 3.1248986212489864) internal successors, (3853), 1233 states have internal predecessors, (3853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:17,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3853 transitions. [2021-03-11 16:02:17,775 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3853 transitions. Word has length 34 [2021-03-11 16:02:17,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:17,775 INFO L480 AbstractCegarLoop]: Abstraction has 1234 states and 3853 transitions. [2021-03-11 16:02:17,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:17,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3853 transitions. [2021-03-11 16:02:17,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:17,777 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:17,777 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:17,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-03-11 16:02:17,777 INFO L428 AbstractCegarLoop]: === Iteration 54 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:17,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:17,778 INFO L82 PathProgramCache]: Analyzing trace with hash 609746702, now seen corresponding path program 54 times [2021-03-11 16:02:17,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:17,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537385318] [2021-03-11 16:02:17,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:17,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:17,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:17,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:17,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:17,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:17,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:17,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:17,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:17,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:17,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:17,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:17,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:17,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:17,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:17,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:17,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:17,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:17,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:17,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:17,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:17,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:17,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:17,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:17,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:17,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:17,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:17,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:17,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:17,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:17,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:17,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:17,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:18,007 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:18,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:18,029 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:18,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:18,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:18,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537385318] [2021-03-11 16:02:18,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:18,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:02:18,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537551879] [2021-03-11 16:02:18,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:02:18,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:18,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:02:18,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:02:18,032 INFO L87 Difference]: Start difference. First operand 1234 states and 3853 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:19,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:19,538 INFO L93 Difference]: Finished difference Result 1511 states and 4639 transitions. [2021-03-11 16:02:19,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-11 16:02:19,539 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:19,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:19,541 INFO L225 Difference]: With dead ends: 1511 [2021-03-11 16:02:19,541 INFO L226 Difference]: Without dead ends: 1474 [2021-03-11 16:02:19,541 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 910.2ms TimeCoverageRelationStatistics Valid=235, Invalid=2215, Unknown=0, NotChecked=0, Total=2450 [2021-03-11 16:02:19,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-03-11 16:02:19,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1235. [2021-03-11 16:02:19,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 1234 states have (on average 3.1231766612641816) internal successors, (3854), 1234 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:19,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 3854 transitions. [2021-03-11 16:02:19,578 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 3854 transitions. Word has length 34 [2021-03-11 16:02:19,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:19,578 INFO L480 AbstractCegarLoop]: Abstraction has 1235 states and 3854 transitions. [2021-03-11 16:02:19,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:19,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 3854 transitions. [2021-03-11 16:02:19,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:19,580 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:19,580 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:19,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-03-11 16:02:19,580 INFO L428 AbstractCegarLoop]: === Iteration 55 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:19,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:19,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1057025202, now seen corresponding path program 55 times [2021-03-11 16:02:19,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:19,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45680248] [2021-03-11 16:02:19,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:19,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:19,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:19,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:19,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:19,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:19,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:19,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:19,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:19,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:19,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:19,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:19,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:19,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:19,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:19,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:19,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:19,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:19,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:19,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:19,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:19,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:19,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:19,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:19,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:19,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:19,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:19,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:19,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:19,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:19,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:19,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:19,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:19,808 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:19,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:19,831 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:19,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:19,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:19,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45680248] [2021-03-11 16:02:19,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:19,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:02:19,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83556411] [2021-03-11 16:02:19,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:02:19,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:19,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:02:19,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:02:19,834 INFO L87 Difference]: Start difference. First operand 1235 states and 3854 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:21,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:21,229 INFO L93 Difference]: Finished difference Result 1450 states and 4473 transitions. [2021-03-11 16:02:21,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-11 16:02:21,229 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:21,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:21,231 INFO L225 Difference]: With dead ends: 1450 [2021-03-11 16:02:21,231 INFO L226 Difference]: Without dead ends: 1413 [2021-03-11 16:02:21,232 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 794.5ms TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 16:02:21,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2021-03-11 16:02:21,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1234. [2021-03-11 16:02:21,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1233 states have (on average 3.124087591240876) internal successors, (3852), 1233 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:21,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3852 transitions. [2021-03-11 16:02:21,245 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3852 transitions. Word has length 34 [2021-03-11 16:02:21,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:21,245 INFO L480 AbstractCegarLoop]: Abstraction has 1234 states and 3852 transitions. [2021-03-11 16:02:21,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:21,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3852 transitions. [2021-03-11 16:02:21,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:21,246 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:21,247 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:21,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-03-11 16:02:21,247 INFO L428 AbstractCegarLoop]: === Iteration 56 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:21,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:21,247 INFO L82 PathProgramCache]: Analyzing trace with hash 2122816438, now seen corresponding path program 56 times [2021-03-11 16:02:21,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:21,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914744727] [2021-03-11 16:02:21,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:21,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:21,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:21,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:21,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:21,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:21,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:21,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:21,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:21,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:21,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:21,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:21,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:21,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:21,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:21,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:21,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:21,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:21,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:21,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:21,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:21,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:21,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:21,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:21,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:21,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:21,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:21,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:21,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:21,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:21,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:21,450 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:02:21,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:21,464 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:02:21,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:21,491 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:21,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:21,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:21,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914744727] [2021-03-11 16:02:21,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:21,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:02:21,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793561560] [2021-03-11 16:02:21,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:02:21,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:21,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:02:21,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:02:21,495 INFO L87 Difference]: Start difference. First operand 1234 states and 3852 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:22,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:22,973 INFO L93 Difference]: Finished difference Result 1469 states and 4530 transitions. [2021-03-11 16:02:22,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 16:02:22,974 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:22,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:22,976 INFO L225 Difference]: With dead ends: 1469 [2021-03-11 16:02:22,976 INFO L226 Difference]: Without dead ends: 1432 [2021-03-11 16:02:22,976 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 820.6ms TimeCoverageRelationStatistics Valid=196, Invalid=1784, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 16:02:22,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2021-03-11 16:02:22,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1236. [2021-03-11 16:02:22,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 3.1222672064777326) internal successors, (3856), 1235 states have internal predecessors, (3856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:22,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 3856 transitions. [2021-03-11 16:02:22,989 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 3856 transitions. Word has length 34 [2021-03-11 16:02:22,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:22,990 INFO L480 AbstractCegarLoop]: Abstraction has 1236 states and 3856 transitions. [2021-03-11 16:02:22,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:22,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 3856 transitions. [2021-03-11 16:02:22,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:22,991 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:22,991 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:22,991 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-03-11 16:02:22,991 INFO L428 AbstractCegarLoop]: === Iteration 57 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:22,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:22,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1054801024, now seen corresponding path program 57 times [2021-03-11 16:02:22,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:22,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787507706] [2021-03-11 16:02:22,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:23,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:23,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:23,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:23,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:23,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:23,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:23,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:23,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:23,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:23,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:23,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:23,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:23,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:23,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:23,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:23,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:23,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:23,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:23,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:23,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:23,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:23,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:23,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:23,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:23,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:23,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:23,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:23,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:23,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:23,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:23,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:23,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:23,247 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:23,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:23,274 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:23,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:23,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:23,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787507706] [2021-03-11 16:02:23,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:23,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:02:23,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381726325] [2021-03-11 16:02:23,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:02:23,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:23,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:02:23,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:02:23,278 INFO L87 Difference]: Start difference. First operand 1236 states and 3856 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:24,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:24,776 INFO L93 Difference]: Finished difference Result 1432 states and 4439 transitions. [2021-03-11 16:02:24,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-11 16:02:24,777 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:24,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:24,779 INFO L225 Difference]: With dead ends: 1432 [2021-03-11 16:02:24,779 INFO L226 Difference]: Without dead ends: 1393 [2021-03-11 16:02:24,779 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 876.8ms TimeCoverageRelationStatistics Valid=207, Invalid=1955, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 16:02:24,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2021-03-11 16:02:24,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1233. [2021-03-11 16:02:24,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 1232 states have (on average 3.125) internal successors, (3850), 1232 states have internal predecessors, (3850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:24,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 3850 transitions. [2021-03-11 16:02:24,793 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 3850 transitions. Word has length 34 [2021-03-11 16:02:24,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:24,793 INFO L480 AbstractCegarLoop]: Abstraction has 1233 states and 3850 transitions. [2021-03-11 16:02:24,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:24,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 3850 transitions. [2021-03-11 16:02:24,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:24,795 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:24,795 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:24,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-03-11 16:02:24,795 INFO L428 AbstractCegarLoop]: === Iteration 58 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:24,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:24,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1650272684, now seen corresponding path program 58 times [2021-03-11 16:02:24,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:24,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764421556] [2021-03-11 16:02:24,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:24,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:24,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:24,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:24,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:24,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:24,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:24,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:24,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:24,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:24,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:24,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:24,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:24,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:24,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:24,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:24,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:24,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:24,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:24,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:24,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:24,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:24,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:24,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:24,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:24,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:24,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:24,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:24,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:24,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:24,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:24,997 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:24,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:25,018 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:25,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:25,042 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:25,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:25,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764421556] [2021-03-11 16:02:25,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:25,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:02:25,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897898311] [2021-03-11 16:02:25,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:02:25,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:25,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:02:25,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:02:25,045 INFO L87 Difference]: Start difference. First operand 1233 states and 3850 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:26,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:26,275 INFO L93 Difference]: Finished difference Result 1390 states and 4297 transitions. [2021-03-11 16:02:26,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-11 16:02:26,276 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:26,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:26,278 INFO L225 Difference]: With dead ends: 1390 [2021-03-11 16:02:26,278 INFO L226 Difference]: Without dead ends: 1359 [2021-03-11 16:02:26,278 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 653.0ms TimeCoverageRelationStatistics Valid=142, Invalid=1340, Unknown=0, NotChecked=0, Total=1482 [2021-03-11 16:02:26,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2021-03-11 16:02:26,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 1237. [2021-03-11 16:02:26,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 1236 states have (on average 3.1229773462783172) internal successors, (3860), 1236 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:26,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 3860 transitions. [2021-03-11 16:02:26,294 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 3860 transitions. Word has length 34 [2021-03-11 16:02:26,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:26,294 INFO L480 AbstractCegarLoop]: Abstraction has 1237 states and 3860 transitions. [2021-03-11 16:02:26,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:26,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 3860 transitions. [2021-03-11 16:02:26,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:26,295 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:26,295 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:26,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-03-11 16:02:26,295 INFO L428 AbstractCegarLoop]: === Iteration 59 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:26,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:26,296 INFO L82 PathProgramCache]: Analyzing trace with hash 961756504, now seen corresponding path program 59 times [2021-03-11 16:02:26,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:26,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689104760] [2021-03-11 16:02:26,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:26,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:26,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:26,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:26,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:26,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:26,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:26,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:26,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:26,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:26,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:26,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:26,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:26,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:26,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:26,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:26,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:26,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:26,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:26,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:26,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:26,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:26,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:26,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:26,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:26,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:26,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:26,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:26,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:26,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:26,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:26,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:26,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:26,556 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:26,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:26,579 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:26,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:26,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:26,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689104760] [2021-03-11 16:02:26,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:26,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:02:26,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122616868] [2021-03-11 16:02:26,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:02:26,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:26,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:02:26,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:02:26,583 INFO L87 Difference]: Start difference. First operand 1237 states and 3860 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:27,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:27,842 INFO L93 Difference]: Finished difference Result 1395 states and 4316 transitions. [2021-03-11 16:02:27,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-11 16:02:27,843 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:27,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:27,845 INFO L225 Difference]: With dead ends: 1395 [2021-03-11 16:02:27,845 INFO L226 Difference]: Without dead ends: 1357 [2021-03-11 16:02:27,845 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 702.3ms TimeCoverageRelationStatistics Valid=150, Invalid=1410, Unknown=0, NotChecked=0, Total=1560 [2021-03-11 16:02:27,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2021-03-11 16:02:27,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1235. [2021-03-11 16:02:27,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 1234 states have (on average 3.1231766612641816) internal successors, (3854), 1234 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:27,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 3854 transitions. [2021-03-11 16:02:27,859 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 3854 transitions. Word has length 34 [2021-03-11 16:02:27,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:27,859 INFO L480 AbstractCegarLoop]: Abstraction has 1235 states and 3854 transitions. [2021-03-11 16:02:27,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:27,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 3854 transitions. [2021-03-11 16:02:27,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:27,860 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:27,860 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:27,860 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-03-11 16:02:27,861 INFO L428 AbstractCegarLoop]: === Iteration 60 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:27,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:27,861 INFO L82 PathProgramCache]: Analyzing trace with hash 132868292, now seen corresponding path program 60 times [2021-03-11 16:02:27,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:27,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699494309] [2021-03-11 16:02:27,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:27,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:27,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:27,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:27,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:27,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:27,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:27,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:27,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:27,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:27,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:27,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:27,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:27,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:27,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:27,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:27,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:27,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:27,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:27,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:27,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:27,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:27,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:27,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:27,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:28,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:28,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:28,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:28,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:28,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:28,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:28,067 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:02:28,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:28,079 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:02:28,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:28,100 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:28,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:28,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:28,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699494309] [2021-03-11 16:02:28,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:28,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:02:28,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759859461] [2021-03-11 16:02:28,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:02:28,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:28,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:02:28,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:02:28,103 INFO L87 Difference]: Start difference. First operand 1235 states and 3854 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:29,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:29,444 INFO L93 Difference]: Finished difference Result 1435 states and 4420 transitions. [2021-03-11 16:02:29,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-11 16:02:29,445 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:29,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:29,447 INFO L225 Difference]: With dead ends: 1435 [2021-03-11 16:02:29,447 INFO L226 Difference]: Without dead ends: 1398 [2021-03-11 16:02:29,447 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 695.2ms TimeCoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2021-03-11 16:02:29,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2021-03-11 16:02:29,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1237. [2021-03-11 16:02:29,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 1236 states have (on average 3.121359223300971) internal successors, (3858), 1236 states have internal predecessors, (3858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:29,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 3858 transitions. [2021-03-11 16:02:29,461 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 3858 transitions. Word has length 34 [2021-03-11 16:02:29,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:29,461 INFO L480 AbstractCegarLoop]: Abstraction has 1237 states and 3858 transitions. [2021-03-11 16:02:29,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:29,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 3858 transitions. [2021-03-11 16:02:29,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:29,463 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:29,463 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:29,463 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-03-11 16:02:29,463 INFO L428 AbstractCegarLoop]: === Iteration 61 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:29,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:29,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1407176714, now seen corresponding path program 61 times [2021-03-11 16:02:29,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:29,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045688056] [2021-03-11 16:02:29,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:29,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:29,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:29,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:29,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:29,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:29,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:29,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:29,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:29,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:29,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:29,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:29,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:29,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:29,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:29,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:29,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:29,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:29,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:29,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:29,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:29,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:29,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:29,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:29,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:29,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:29,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:29,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:29,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:29,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:29,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:29,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:29,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:29,699 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:29,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:29,722 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:29,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:29,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045688056] [2021-03-11 16:02:29,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:29,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:02:29,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079078349] [2021-03-11 16:02:29,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:02:29,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:29,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:02:29,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:02:29,725 INFO L87 Difference]: Start difference. First operand 1237 states and 3858 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:31,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:31,014 INFO L93 Difference]: Finished difference Result 1398 states and 4329 transitions. [2021-03-11 16:02:31,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-11 16:02:31,015 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:31,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:31,017 INFO L225 Difference]: With dead ends: 1398 [2021-03-11 16:02:31,017 INFO L226 Difference]: Without dead ends: 1357 [2021-03-11 16:02:31,017 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 732.5ms TimeCoverageRelationStatistics Valid=165, Invalid=1557, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 16:02:31,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2021-03-11 16:02:31,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1232. [2021-03-11 16:02:31,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1231 states have (on average 3.12591389114541) internal successors, (3848), 1231 states have internal predecessors, (3848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:31,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 3848 transitions. [2021-03-11 16:02:31,031 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 3848 transitions. Word has length 34 [2021-03-11 16:02:31,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:31,031 INFO L480 AbstractCegarLoop]: Abstraction has 1232 states and 3848 transitions. [2021-03-11 16:02:31,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:31,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 3848 transitions. [2021-03-11 16:02:31,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:31,033 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:31,033 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:31,033 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-03-11 16:02:31,033 INFO L428 AbstractCegarLoop]: === Iteration 62 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:31,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:31,033 INFO L82 PathProgramCache]: Analyzing trace with hash -776035822, now seen corresponding path program 62 times [2021-03-11 16:02:31,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:31,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108541531] [2021-03-11 16:02:31,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:31,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:31,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:31,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:31,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:31,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:31,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:31,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:31,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:31,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:31,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:31,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:31,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:31,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:31,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:31,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:31,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:31,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:31,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:31,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:31,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:31,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:31,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:31,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:31,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:31,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:31,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:31,221 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:31,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:31,224 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:31,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:31,252 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:31,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:31,277 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:31,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:31,304 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:31,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:31,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:31,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108541531] [2021-03-11 16:02:31,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:31,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:02:31,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420186636] [2021-03-11 16:02:31,308 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:02:31,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:31,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:02:31,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:02:31,309 INFO L87 Difference]: Start difference. First operand 1232 states and 3848 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:33,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:33,474 INFO L93 Difference]: Finished difference Result 1676 states and 5194 transitions. [2021-03-11 16:02:33,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-11 16:02:33,474 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:33,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:33,476 INFO L225 Difference]: With dead ends: 1676 [2021-03-11 16:02:33,477 INFO L226 Difference]: Without dead ends: 1651 [2021-03-11 16:02:33,477 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 1122.4ms TimeCoverageRelationStatistics Valid=246, Invalid=1916, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 16:02:33,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2021-03-11 16:02:33,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1242. [2021-03-11 16:02:33,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 1241 states have (on average 3.1240934730056407) internal successors, (3877), 1241 states have internal predecessors, (3877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:33,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 3877 transitions. [2021-03-11 16:02:33,491 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 3877 transitions. Word has length 34 [2021-03-11 16:02:33,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:33,491 INFO L480 AbstractCegarLoop]: Abstraction has 1242 states and 3877 transitions. [2021-03-11 16:02:33,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:33,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 3877 transitions. [2021-03-11 16:02:33,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:33,493 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:33,493 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:33,493 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-03-11 16:02:33,493 INFO L428 AbstractCegarLoop]: === Iteration 63 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:33,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:33,493 INFO L82 PathProgramCache]: Analyzing trace with hash -483194840, now seen corresponding path program 63 times [2021-03-11 16:02:33,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:33,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033100] [2021-03-11 16:02:33,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:33,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:33,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:33,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:33,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:33,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:33,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:33,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:33,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:33,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:33,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:33,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:33,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:33,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:33,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:33,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:33,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:33,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:33,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:33,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:33,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:33,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:33,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:33,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:33,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:33,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:33,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:33,683 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:33,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:33,686 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:33,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:33,709 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:33,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:33,735 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:33,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:33,762 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:33,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:33,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:33,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033100] [2021-03-11 16:02:33,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:33,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:02:33,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660726747] [2021-03-11 16:02:33,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:02:33,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:33,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:02:33,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:02:33,767 INFO L87 Difference]: Start difference. First operand 1242 states and 3877 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:35,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:35,659 INFO L93 Difference]: Finished difference Result 1552 states and 4761 transitions. [2021-03-11 16:02:35,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-11 16:02:35,660 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:35,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:35,662 INFO L225 Difference]: With dead ends: 1552 [2021-03-11 16:02:35,662 INFO L226 Difference]: Without dead ends: 1525 [2021-03-11 16:02:35,662 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 1016.2ms TimeCoverageRelationStatistics Valid=223, Invalid=1757, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 16:02:35,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2021-03-11 16:02:35,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 1247. [2021-03-11 16:02:35,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1246 states have (on average 3.122792937399679) internal successors, (3891), 1246 states have internal predecessors, (3891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:35,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 3891 transitions. [2021-03-11 16:02:35,678 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 3891 transitions. Word has length 34 [2021-03-11 16:02:35,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:35,678 INFO L480 AbstractCegarLoop]: Abstraction has 1247 states and 3891 transitions. [2021-03-11 16:02:35,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:35,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 3891 transitions. [2021-03-11 16:02:35,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:35,680 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:35,680 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:35,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-03-11 16:02:35,680 INFO L428 AbstractCegarLoop]: === Iteration 64 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:35,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:35,680 INFO L82 PathProgramCache]: Analyzing trace with hash -201135610, now seen corresponding path program 64 times [2021-03-11 16:02:35,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:35,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181909298] [2021-03-11 16:02:35,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:35,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:35,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:35,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:35,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:35,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:35,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:35,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:35,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:35,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:35,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:35,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:35,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:35,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:35,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:35,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:35,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:35,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:35,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:35,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:35,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:35,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:35,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:35,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:35,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:35,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:35,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:35,850 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:35,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:35,853 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:35,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:35,872 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:35,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:35,910 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:35,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:35,932 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:35,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:35,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:35,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181909298] [2021-03-11 16:02:35,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:35,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:02:35,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097282897] [2021-03-11 16:02:35,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:02:35,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:35,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:02:35,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:02:35,935 INFO L87 Difference]: Start difference. First operand 1247 states and 3891 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:37,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:37,223 INFO L93 Difference]: Finished difference Result 1462 states and 4483 transitions. [2021-03-11 16:02:37,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-11 16:02:37,223 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:37,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:37,226 INFO L225 Difference]: With dead ends: 1462 [2021-03-11 16:02:37,226 INFO L226 Difference]: Without dead ends: 1430 [2021-03-11 16:02:37,226 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 622.0ms TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2021-03-11 16:02:37,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2021-03-11 16:02:37,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1249. [2021-03-11 16:02:37,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1248 states have (on average 3.12099358974359) internal successors, (3895), 1248 states have internal predecessors, (3895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:37,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 3895 transitions. [2021-03-11 16:02:37,240 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 3895 transitions. Word has length 34 [2021-03-11 16:02:37,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:37,240 INFO L480 AbstractCegarLoop]: Abstraction has 1249 states and 3895 transitions. [2021-03-11 16:02:37,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:37,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 3895 transitions. [2021-03-11 16:02:37,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:37,242 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:37,242 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:37,242 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-03-11 16:02:37,242 INFO L428 AbstractCegarLoop]: === Iteration 65 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:37,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:37,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1426916258, now seen corresponding path program 65 times [2021-03-11 16:02:37,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:37,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509932611] [2021-03-11 16:02:37,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:37,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:37,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:37,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:37,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:37,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:37,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:37,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:37,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:37,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:37,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:37,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:37,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:37,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:37,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:37,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:37,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:37,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:37,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:37,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:37,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:37,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:37,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:37,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:37,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:37,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:37,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:37,435 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:37,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:37,442 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:37,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:37,466 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:37,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:37,477 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:37,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:37,503 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:37,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:37,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:37,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509932611] [2021-03-11 16:02:37,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:37,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 16:02:37,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920638088] [2021-03-11 16:02:37,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 16:02:37,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:37,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 16:02:37,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-03-11 16:02:37,507 INFO L87 Difference]: Start difference. First operand 1249 states and 3895 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:39,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:39,591 INFO L93 Difference]: Finished difference Result 1598 states and 4928 transitions. [2021-03-11 16:02:39,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-11 16:02:39,592 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:39,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:39,594 INFO L225 Difference]: With dead ends: 1598 [2021-03-11 16:02:39,594 INFO L226 Difference]: Without dead ends: 1569 [2021-03-11 16:02:39,594 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 0 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 1069.6ms TimeCoverageRelationStatistics Valid=249, Invalid=2007, Unknown=0, NotChecked=0, Total=2256 [2021-03-11 16:02:39,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2021-03-11 16:02:39,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1262. [2021-03-11 16:02:39,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 3.118160190325139) internal successors, (3932), 1261 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:39,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 3932 transitions. [2021-03-11 16:02:39,610 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 3932 transitions. Word has length 34 [2021-03-11 16:02:39,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:39,610 INFO L480 AbstractCegarLoop]: Abstraction has 1262 states and 3932 transitions. [2021-03-11 16:02:39,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:39,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 3932 transitions. [2021-03-11 16:02:39,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:39,612 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:39,612 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:39,612 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-03-11 16:02:39,612 INFO L428 AbstractCegarLoop]: === Iteration 66 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:39,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:39,612 INFO L82 PathProgramCache]: Analyzing trace with hash 984017118, now seen corresponding path program 66 times [2021-03-11 16:02:39,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:39,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317903500] [2021-03-11 16:02:39,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:39,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:39,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:39,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:39,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:39,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:39,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:39,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:39,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:39,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:39,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:39,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:39,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:39,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:39,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:39,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:39,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:39,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:39,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:39,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:39,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:39,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:39,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:39,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:39,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:39,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:39,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:39,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:39,781 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:39,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:39,783 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:39,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:39,805 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:39,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:39,825 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:39,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:39,856 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:39,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:39,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:39,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317903500] [2021-03-11 16:02:39,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:39,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:02:39,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046822859] [2021-03-11 16:02:39,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:02:39,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:39,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:02:39,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:02:39,860 INFO L87 Difference]: Start difference. First operand 1262 states and 3932 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:42,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:42,335 INFO L93 Difference]: Finished difference Result 1686 states and 5206 transitions. [2021-03-11 16:02:42,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-03-11 16:02:42,336 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:42,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:42,339 INFO L225 Difference]: With dead ends: 1686 [2021-03-11 16:02:42,339 INFO L226 Difference]: Without dead ends: 1661 [2021-03-11 16:02:42,339 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 1258.8ms TimeCoverageRelationStatistics Valid=294, Invalid=2358, Unknown=0, NotChecked=0, Total=2652 [2021-03-11 16:02:42,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2021-03-11 16:02:42,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1262. [2021-03-11 16:02:42,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 3.118160190325139) internal successors, (3932), 1261 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:42,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 3932 transitions. [2021-03-11 16:02:42,354 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 3932 transitions. Word has length 34 [2021-03-11 16:02:42,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:42,354 INFO L480 AbstractCegarLoop]: Abstraction has 1262 states and 3932 transitions. [2021-03-11 16:02:42,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:42,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 3932 transitions. [2021-03-11 16:02:42,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:42,356 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:42,356 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:42,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-03-11 16:02:42,356 INFO L428 AbstractCegarLoop]: === Iteration 67 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:42,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:42,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1276858100, now seen corresponding path program 67 times [2021-03-11 16:02:42,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:42,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159329494] [2021-03-11 16:02:42,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:42,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:42,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:42,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:42,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:42,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:42,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:42,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:42,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:42,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:42,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:42,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:42,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:42,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:42,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:42,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:42,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:42,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:42,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:42,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:42,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:42,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:42,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:42,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:42,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:42,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:42,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:42,520 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:42,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:42,523 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:42,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:42,543 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:42,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:42,564 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:42,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:42,587 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:42,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:42,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:42,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159329494] [2021-03-11 16:02:42,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:42,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:02:42,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393911269] [2021-03-11 16:02:42,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:02:42,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:42,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:02:42,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:02:42,591 INFO L87 Difference]: Start difference. First operand 1262 states and 3932 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:44,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:44,923 INFO L93 Difference]: Finished difference Result 1646 states and 5093 transitions. [2021-03-11 16:02:44,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-11 16:02:44,923 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:44,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:44,926 INFO L225 Difference]: With dead ends: 1646 [2021-03-11 16:02:44,926 INFO L226 Difference]: Without dead ends: 1617 [2021-03-11 16:02:44,926 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 1189.3ms TimeCoverageRelationStatistics Valid=279, Invalid=2271, Unknown=0, NotChecked=0, Total=2550 [2021-03-11 16:02:44,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2021-03-11 16:02:44,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1260. [2021-03-11 16:02:44,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 1259 states have (on average 3.118347895154885) internal successors, (3926), 1259 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:44,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 3926 transitions. [2021-03-11 16:02:44,947 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 3926 transitions. Word has length 34 [2021-03-11 16:02:44,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:44,948 INFO L480 AbstractCegarLoop]: Abstraction has 1260 states and 3926 transitions. [2021-03-11 16:02:44,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:44,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 3926 transitions. [2021-03-11 16:02:44,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:44,949 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:44,949 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:44,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-03-11 16:02:44,950 INFO L428 AbstractCegarLoop]: === Iteration 68 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:44,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:44,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1624658294, now seen corresponding path program 68 times [2021-03-11 16:02:44,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:44,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107693821] [2021-03-11 16:02:44,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:44,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:44,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:44,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:44,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:44,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:44,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:44,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:44,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:44,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:44,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:45,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:45,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:45,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:45,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:45,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:45,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:45,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:45,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:45,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:45,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:45,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:45,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:45,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:45,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:45,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:45,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:45,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:45,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:45,133 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:45,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:45,154 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:45,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:45,176 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:45,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:45,199 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:45,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:45,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:45,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107693821] [2021-03-11 16:02:45,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:45,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:02:45,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312316456] [2021-03-11 16:02:45,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:02:45,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:45,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:02:45,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:02:45,203 INFO L87 Difference]: Start difference. First operand 1260 states and 3926 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:47,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:47,572 INFO L93 Difference]: Finished difference Result 1751 states and 5406 transitions. [2021-03-11 16:02:47,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-11 16:02:47,573 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:47,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:47,575 INFO L225 Difference]: With dead ends: 1751 [2021-03-11 16:02:47,575 INFO L226 Difference]: Without dead ends: 1726 [2021-03-11 16:02:47,575 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 1182.4ms TimeCoverageRelationStatistics Valid=285, Invalid=2367, Unknown=0, NotChecked=0, Total=2652 [2021-03-11 16:02:47,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-03-11 16:02:47,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1261. [2021-03-11 16:02:47,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 1260 states have (on average 3.1182539682539683) internal successors, (3929), 1260 states have internal predecessors, (3929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:47,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 3929 transitions. [2021-03-11 16:02:47,590 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 3929 transitions. Word has length 34 [2021-03-11 16:02:47,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:47,590 INFO L480 AbstractCegarLoop]: Abstraction has 1261 states and 3929 transitions. [2021-03-11 16:02:47,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:47,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 3929 transitions. [2021-03-11 16:02:47,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:47,591 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:47,591 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:47,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-03-11 16:02:47,591 INFO L428 AbstractCegarLoop]: === Iteration 69 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:47,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:47,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1331817312, now seen corresponding path program 69 times [2021-03-11 16:02:47,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:47,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398625189] [2021-03-11 16:02:47,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:47,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:47,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:47,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:47,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:47,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:47,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:47,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:47,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:47,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:47,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:47,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:47,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:47,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:47,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:47,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:47,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:47,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:47,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:47,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:47,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:47,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:47,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:47,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:47,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:47,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:47,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:47,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:47,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:47,769 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:47,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:47,790 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:47,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:47,812 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:47,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:47,835 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:47,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:47,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:47,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398625189] [2021-03-11 16:02:47,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:47,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:02:47,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253057581] [2021-03-11 16:02:47,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:02:47,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:47,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:02:47,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:02:47,838 INFO L87 Difference]: Start difference. First operand 1261 states and 3929 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:49,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:49,901 INFO L93 Difference]: Finished difference Result 1594 states and 4866 transitions. [2021-03-11 16:02:49,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-11 16:02:49,903 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:49,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:49,905 INFO L225 Difference]: With dead ends: 1594 [2021-03-11 16:02:49,906 INFO L226 Difference]: Without dead ends: 1567 [2021-03-11 16:02:49,906 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 1096.2ms TimeCoverageRelationStatistics Valid=275, Invalid=2275, Unknown=0, NotChecked=0, Total=2550 [2021-03-11 16:02:49,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2021-03-11 16:02:49,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1262. [2021-03-11 16:02:49,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 3.118160190325139) internal successors, (3932), 1261 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:49,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 3932 transitions. [2021-03-11 16:02:49,920 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 3932 transitions. Word has length 34 [2021-03-11 16:02:49,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:49,920 INFO L480 AbstractCegarLoop]: Abstraction has 1262 states and 3932 transitions. [2021-03-11 16:02:49,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:49,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 3932 transitions. [2021-03-11 16:02:49,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:49,922 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:49,922 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:49,922 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-03-11 16:02:49,922 INFO L428 AbstractCegarLoop]: === Iteration 70 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:49,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:49,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1049758082, now seen corresponding path program 70 times [2021-03-11 16:02:49,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:49,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318222691] [2021-03-11 16:02:49,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:49,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:49,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:49,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:49,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:49,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:49,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:49,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:49,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:49,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:49,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:49,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:49,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:49,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:49,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:50,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:50,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:50,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:50,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:50,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:50,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:50,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:50,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:50,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:50,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:50,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:50,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:50,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:50,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:50,147 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:50,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:50,174 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:50,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:50,205 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:50,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:50,239 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:50,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:50,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:50,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318222691] [2021-03-11 16:02:50,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:50,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:02:50,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401448228] [2021-03-11 16:02:50,242 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:02:50,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:50,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:02:50,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:02:50,243 INFO L87 Difference]: Start difference. First operand 1262 states and 3932 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:51,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:51,737 INFO L93 Difference]: Finished difference Result 1521 states and 4627 transitions. [2021-03-11 16:02:51,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 16:02:51,737 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:51,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:51,740 INFO L225 Difference]: With dead ends: 1521 [2021-03-11 16:02:51,740 INFO L226 Difference]: Without dead ends: 1489 [2021-03-11 16:02:51,740 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 799.2ms TimeCoverageRelationStatistics Valid=157, Invalid=1403, Unknown=0, NotChecked=0, Total=1560 [2021-03-11 16:02:51,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2021-03-11 16:02:51,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1263. [2021-03-11 16:02:51,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 1262 states have (on average 3.117274167987322) internal successors, (3934), 1262 states have internal predecessors, (3934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:51,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 3934 transitions. [2021-03-11 16:02:51,754 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 3934 transitions. Word has length 34 [2021-03-11 16:02:51,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:51,754 INFO L480 AbstractCegarLoop]: Abstraction has 1263 states and 3934 transitions. [2021-03-11 16:02:51,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:51,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 3934 transitions. [2021-03-11 16:02:51,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:51,755 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:51,755 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:51,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-03-11 16:02:51,756 INFO L428 AbstractCegarLoop]: === Iteration 71 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:51,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:51,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1554548258, now seen corresponding path program 71 times [2021-03-11 16:02:51,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:51,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786895531] [2021-03-11 16:02:51,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:51,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:51,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:51,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:51,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:51,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:51,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:51,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:51,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:51,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:51,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:51,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:51,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:51,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:51,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:51,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:51,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:51,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:51,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:51,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:51,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:51,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:51,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:51,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:51,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:51,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:51,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:51,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:51,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:51,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:51,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:51,993 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:51,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:52,015 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:52,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:52,039 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:52,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:52,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:52,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786895531] [2021-03-11 16:02:52,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:52,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:02:52,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855223070] [2021-03-11 16:02:52,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:02:52,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:52,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:02:52,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:02:52,042 INFO L87 Difference]: Start difference. First operand 1263 states and 3934 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:54,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:54,564 INFO L93 Difference]: Finished difference Result 1839 states and 5653 transitions. [2021-03-11 16:02:54,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-11 16:02:54,565 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:54,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:54,567 INFO L225 Difference]: With dead ends: 1839 [2021-03-11 16:02:54,568 INFO L226 Difference]: Without dead ends: 1814 [2021-03-11 16:02:54,568 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 1248.6ms TimeCoverageRelationStatistics Valid=290, Invalid=2790, Unknown=0, NotChecked=0, Total=3080 [2021-03-11 16:02:54,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2021-03-11 16:02:54,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1263. [2021-03-11 16:02:54,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 1262 states have (on average 3.117274167987322) internal successors, (3934), 1262 states have internal predecessors, (3934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:54,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 3934 transitions. [2021-03-11 16:02:54,583 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 3934 transitions. Word has length 34 [2021-03-11 16:02:54,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:54,583 INFO L480 AbstractCegarLoop]: Abstraction has 1263 states and 3934 transitions. [2021-03-11 16:02:54,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:54,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 3934 transitions. [2021-03-11 16:02:54,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:54,585 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:54,585 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:54,585 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-03-11 16:02:54,585 INFO L428 AbstractCegarLoop]: === Iteration 72 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:54,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:54,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1261707276, now seen corresponding path program 72 times [2021-03-11 16:02:54,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:54,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110868707] [2021-03-11 16:02:54,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:54,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:54,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:54,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:54,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:54,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:54,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:54,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:54,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:54,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:54,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:54,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:54,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:54,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:54,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:54,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:54,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:54,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:54,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:54,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:54,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:54,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:54,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:54,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:54,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:54,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:54,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:54,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:54,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:54,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:54,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:54,795 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:02:54,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:02:54,817 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:54,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:54,858 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:54,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:54,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:54,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110868707] [2021-03-11 16:02:54,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:54,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:02:54,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270237424] [2021-03-11 16:02:54,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:02:54,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:54,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:02:54,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:02:54,862 INFO L87 Difference]: Start difference. First operand 1263 states and 3934 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:56,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:56,878 INFO L93 Difference]: Finished difference Result 1614 states and 4885 transitions. [2021-03-11 16:02:56,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-11 16:02:56,879 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:56,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:56,882 INFO L225 Difference]: With dead ends: 1614 [2021-03-11 16:02:56,882 INFO L226 Difference]: Without dead ends: 1587 [2021-03-11 16:02:56,882 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 1096.8ms TimeCoverageRelationStatistics Valid=253, Invalid=2399, Unknown=0, NotChecked=0, Total=2652 [2021-03-11 16:02:56,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2021-03-11 16:02:56,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1262. [2021-03-11 16:02:56,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 3.1173671689135607) internal successors, (3931), 1261 states have internal predecessors, (3931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:56,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 3931 transitions. [2021-03-11 16:02:56,896 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 3931 transitions. Word has length 34 [2021-03-11 16:02:56,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:56,896 INFO L480 AbstractCegarLoop]: Abstraction has 1262 states and 3931 transitions. [2021-03-11 16:02:56,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:56,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 3931 transitions. [2021-03-11 16:02:56,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:56,898 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:56,898 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:56,898 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-03-11 16:02:56,898 INFO L428 AbstractCegarLoop]: === Iteration 73 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:56,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:56,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1997447398, now seen corresponding path program 73 times [2021-03-11 16:02:56,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:56,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092984681] [2021-03-11 16:02:56,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:56,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:56,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:56,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:56,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:56,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:56,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:56,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:56,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:56,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:56,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:56,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:56,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:56,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:56,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:56,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:56,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:56,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:56,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:57,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:57,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:57,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:57,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:57,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:57,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:57,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:57,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:57,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:57,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:57,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:57,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:57,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:57,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:57,181 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:57,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:57,211 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:57,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:57,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:57,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092984681] [2021-03-11 16:02:57,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:57,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:02:57,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042377060] [2021-03-11 16:02:57,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:02:57,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:57,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:02:57,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:02:57,216 INFO L87 Difference]: Start difference. First operand 1262 states and 3931 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:58,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:58,946 INFO L93 Difference]: Finished difference Result 1578 states and 4777 transitions. [2021-03-11 16:02:58,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-11 16:02:58,947 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:02:58,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:58,949 INFO L225 Difference]: With dead ends: 1578 [2021-03-11 16:02:58,949 INFO L226 Difference]: Without dead ends: 1525 [2021-03-11 16:02:58,950 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 957.4ms TimeCoverageRelationStatistics Valid=208, Invalid=1954, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 16:02:58,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2021-03-11 16:02:58,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 1263. [2021-03-11 16:02:58,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 1262 states have (on average 3.115689381933439) internal successors, (3932), 1262 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:58,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 3932 transitions. [2021-03-11 16:02:58,964 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 3932 transitions. Word has length 34 [2021-03-11 16:02:58,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:58,964 INFO L480 AbstractCegarLoop]: Abstraction has 1263 states and 3932 transitions. [2021-03-11 16:02:58,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:58,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 3932 transitions. [2021-03-11 16:02:58,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:02:58,966 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:58,966 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:02:58,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-03-11 16:02:58,966 INFO L428 AbstractCegarLoop]: === Iteration 74 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:02:58,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:58,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1550168898, now seen corresponding path program 74 times [2021-03-11 16:02:58,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:58,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427118774] [2021-03-11 16:02:58,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:58,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:58,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:58,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:58,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:58,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:58,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:02:58,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:59,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:59,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:59,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:59,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:59,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:59,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:59,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:02:59,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:59,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:59,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:59,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:59,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:59,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:59,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:59,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:59,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:59,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:59,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:59,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:59,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:59,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:59,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:59,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:59,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:59,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:02:59,202 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:02:59,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:02:59,226 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:02:59,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:02:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:02:59,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427118774] [2021-03-11 16:02:59,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:59,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:02:59,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283216154] [2021-03-11 16:02:59,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:02:59,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:59,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:02:59,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:02:59,230 INFO L87 Difference]: Start difference. First operand 1263 states and 3932 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:00,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:03:00,950 INFO L93 Difference]: Finished difference Result 1558 states and 4701 transitions. [2021-03-11 16:03:00,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 16:03:00,951 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:03:00,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:03:00,953 INFO L225 Difference]: With dead ends: 1558 [2021-03-11 16:03:00,954 INFO L226 Difference]: Without dead ends: 1520 [2021-03-11 16:03:00,954 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 856.1ms TimeCoverageRelationStatistics Valid=185, Invalid=1707, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 16:03:00,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-03-11 16:03:00,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1262. [2021-03-11 16:03:00,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 3.1165741475019826) internal successors, (3930), 1261 states have internal predecessors, (3930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:00,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 3930 transitions. [2021-03-11 16:03:00,968 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 3930 transitions. Word has length 34 [2021-03-11 16:03:00,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:03:00,968 INFO L480 AbstractCegarLoop]: Abstraction has 1262 states and 3930 transitions. [2021-03-11 16:03:00,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:00,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 3930 transitions. [2021-03-11 16:03:00,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:03:00,970 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:03:00,970 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:03:00,970 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-03-11 16:03:00,970 INFO L428 AbstractCegarLoop]: === Iteration 75 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:03:00,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:03:00,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1402133772, now seen corresponding path program 75 times [2021-03-11 16:03:00,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:03:00,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467855075] [2021-03-11 16:03:00,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:03:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:03:00,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:00,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:03:01,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:01,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:01,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:01,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:01,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:01,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:01,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:01,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:01,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:01,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:01,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:01,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:01,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:01,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:01,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:01,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:01,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:01,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:01,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:01,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:01,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:01,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:01,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:01,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:01,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:01,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:01,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:01,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:01,242 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:03:01,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:01,265 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:03:01,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:01,289 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:03:01,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:01,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:03:01,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467855075] [2021-03-11 16:03:01,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:03:01,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:03:01,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122005333] [2021-03-11 16:03:01,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:03:01,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:03:01,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:03:01,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:03:01,293 INFO L87 Difference]: Start difference. First operand 1262 states and 3930 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:02,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:03:02,873 INFO L93 Difference]: Finished difference Result 1475 states and 4491 transitions. [2021-03-11 16:03:02,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-11 16:03:02,874 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:03:02,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:03:02,876 INFO L225 Difference]: With dead ends: 1475 [2021-03-11 16:03:02,876 INFO L226 Difference]: Without dead ends: 1444 [2021-03-11 16:03:02,876 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 770.5ms TimeCoverageRelationStatistics Valid=151, Invalid=1409, Unknown=0, NotChecked=0, Total=1560 [2021-03-11 16:03:02,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2021-03-11 16:03:02,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1264. [2021-03-11 16:03:02,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1263 states have (on average 3.114806017418844) internal successors, (3934), 1263 states have internal predecessors, (3934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:02,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 3934 transitions. [2021-03-11 16:03:02,890 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 3934 transitions. Word has length 34 [2021-03-11 16:03:02,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:03:02,890 INFO L480 AbstractCegarLoop]: Abstraction has 1264 states and 3934 transitions. [2021-03-11 16:03:02,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:02,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 3934 transitions. [2021-03-11 16:03:02,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:03:02,891 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:03:02,891 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:03:02,891 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-03-11 16:03:02,891 INFO L428 AbstractCegarLoop]: === Iteration 76 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:03:02,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:03:02,892 INFO L82 PathProgramCache]: Analyzing trace with hash -870576180, now seen corresponding path program 76 times [2021-03-11 16:03:02,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:03:02,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110309698] [2021-03-11 16:03:02,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:03:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:03:02,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:02,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:03:02,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:02,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:02,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:02,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:02,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:02,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:02,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:02,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:02,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:02,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:02,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:02,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:02,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:02,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:02,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:02,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:02,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:02,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:03,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:03,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:03,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:03,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:03,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:03,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:03,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:03,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:03,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:03,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:03,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:03,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:03,125 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:03:03,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:03,149 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:03:03,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:03,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:03:03,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110309698] [2021-03-11 16:03:03,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:03:03,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:03:03,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40123340] [2021-03-11 16:03:03,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:03:03,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:03:03,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:03:03,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:03:03,152 INFO L87 Difference]: Start difference. First operand 1264 states and 3934 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:04,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:03:04,647 INFO L93 Difference]: Finished difference Result 1492 states and 4539 transitions. [2021-03-11 16:03:04,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-11 16:03:04,648 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:03:04,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:03:04,650 INFO L225 Difference]: With dead ends: 1492 [2021-03-11 16:03:04,650 INFO L226 Difference]: Without dead ends: 1452 [2021-03-11 16:03:04,650 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 738.8ms TimeCoverageRelationStatistics Valid=157, Invalid=1483, Unknown=0, NotChecked=0, Total=1640 [2021-03-11 16:03:04,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2021-03-11 16:03:04,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 1261. [2021-03-11 16:03:04,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 1260 states have (on average 3.1174603174603175) internal successors, (3928), 1260 states have internal predecessors, (3928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:04,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 3928 transitions. [2021-03-11 16:03:04,664 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 3928 transitions. Word has length 34 [2021-03-11 16:03:04,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:03:04,664 INFO L480 AbstractCegarLoop]: Abstraction has 1261 states and 3928 transitions. [2021-03-11 16:03:04,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:04,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 3928 transitions. [2021-03-11 16:03:04,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:03:04,665 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:03:04,665 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:03:04,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-03-11 16:03:04,665 INFO L428 AbstractCegarLoop]: === Iteration 77 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:03:04,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:03:04,666 INFO L82 PathProgramCache]: Analyzing trace with hash -694639922, now seen corresponding path program 77 times [2021-03-11 16:03:04,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:03:04,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371714592] [2021-03-11 16:03:04,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:03:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:03:04,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:04,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:03:04,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:04,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:04,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:04,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:04,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:04,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:04,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:04,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:04,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:04,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:04,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:04,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:04,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:04,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:04,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:04,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:04,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:04,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:04,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:04,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:04,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:04,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:04,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:04,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:04,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:04,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:04,852 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:03:04,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:03:04,873 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:03:04,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:04,884 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:03:04,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:04,907 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:03:04,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:04,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:03:04,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371714592] [2021-03-11 16:03:04,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:03:04,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:03:04,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992148935] [2021-03-11 16:03:04,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:03:04,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:03:04,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:03:04,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:03:04,910 INFO L87 Difference]: Start difference. First operand 1261 states and 3928 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:07,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:03:07,510 INFO L93 Difference]: Finished difference Result 1712 states and 5296 transitions. [2021-03-11 16:03:07,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-03-11 16:03:07,510 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:03:07,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:03:07,513 INFO L225 Difference]: With dead ends: 1712 [2021-03-11 16:03:07,513 INFO L226 Difference]: Without dead ends: 1683 [2021-03-11 16:03:07,513 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 1267.0ms TimeCoverageRelationStatistics Valid=302, Invalid=2668, Unknown=0, NotChecked=0, Total=2970 [2021-03-11 16:03:07,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2021-03-11 16:03:07,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1268. [2021-03-11 16:03:07,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 1267 states have (on average 3.113654301499605) internal successors, (3945), 1267 states have internal predecessors, (3945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:07,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 3945 transitions. [2021-03-11 16:03:07,528 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 3945 transitions. Word has length 34 [2021-03-11 16:03:07,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:03:07,529 INFO L480 AbstractCegarLoop]: Abstraction has 1268 states and 3945 transitions. [2021-03-11 16:03:07,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:07,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 3945 transitions. [2021-03-11 16:03:07,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:03:07,530 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:03:07,530 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:03:07,530 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-03-11 16:03:07,530 INFO L428 AbstractCegarLoop]: === Iteration 78 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:03:07,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:03:07,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1137539062, now seen corresponding path program 78 times [2021-03-11 16:03:07,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:03:07,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376433875] [2021-03-11 16:03:07,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:03:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:03:07,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:07,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:03:07,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:07,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:07,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:07,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:07,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:07,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:07,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:07,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:07,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:07,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:07,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:07,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:07,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:07,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:07,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:07,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:07,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:07,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:07,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:07,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:07,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:07,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:07,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:07,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:07,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:07,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:07,740 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:03:07,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:03:07,762 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:03:07,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:03:07,785 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:03:07,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:07,810 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:03:07,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:03:07,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376433875] [2021-03-11 16:03:07,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:03:07,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:03:07,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064871311] [2021-03-11 16:03:07,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:03:07,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:03:07,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:03:07,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:03:07,814 INFO L87 Difference]: Start difference. First operand 1268 states and 3945 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:10,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:03:10,996 INFO L93 Difference]: Finished difference Result 1850 states and 5706 transitions. [2021-03-11 16:03:10,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-03-11 16:03:10,997 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:03:10,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:03:11,000 INFO L225 Difference]: With dead ends: 1850 [2021-03-11 16:03:11,000 INFO L226 Difference]: Without dead ends: 1825 [2021-03-11 16:03:11,000 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 964 ImplicationChecksByTransitivity, 1610.8ms TimeCoverageRelationStatistics Valid=388, Invalid=3394, Unknown=0, NotChecked=0, Total=3782 [2021-03-11 16:03:11,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1825 states. [2021-03-11 16:03:11,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1825 to 1268. [2021-03-11 16:03:11,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 1267 states have (on average 3.113654301499605) internal successors, (3945), 1267 states have internal predecessors, (3945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:11,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 3945 transitions. [2021-03-11 16:03:11,017 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 3945 transitions. Word has length 34 [2021-03-11 16:03:11,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:03:11,017 INFO L480 AbstractCegarLoop]: Abstraction has 1268 states and 3945 transitions. [2021-03-11 16:03:11,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:11,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 3945 transitions. [2021-03-11 16:03:11,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:03:11,018 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:03:11,018 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:03:11,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-03-11 16:03:11,018 INFO L428 AbstractCegarLoop]: === Iteration 79 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:03:11,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:03:11,019 INFO L82 PathProgramCache]: Analyzing trace with hash -844698080, now seen corresponding path program 79 times [2021-03-11 16:03:11,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:03:11,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886827590] [2021-03-11 16:03:11,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:03:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:03:11,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:11,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:03:11,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:11,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:11,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:11,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:11,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:11,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:11,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:11,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:11,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:11,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:11,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:11,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:11,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:11,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:11,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:11,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:11,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:11,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:11,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:11,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:11,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:11,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:11,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:11,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:11,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:11,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:11,206 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:03:11,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:03:11,228 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:03:11,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:03:11,251 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:03:11,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:11,275 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:03:11,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:11,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:03:11,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886827590] [2021-03-11 16:03:11,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:03:11,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:03:11,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520609773] [2021-03-11 16:03:11,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:03:11,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:03:11,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:03:11,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:03:11,279 INFO L87 Difference]: Start difference. First operand 1268 states and 3945 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:14,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:03:14,439 INFO L93 Difference]: Finished difference Result 1830 states and 5657 transitions. [2021-03-11 16:03:14,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-11 16:03:14,440 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:03:14,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:03:14,442 INFO L225 Difference]: With dead ends: 1830 [2021-03-11 16:03:14,442 INFO L226 Difference]: Without dead ends: 1802 [2021-03-11 16:03:14,443 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 1526.9ms TimeCoverageRelationStatistics Valid=367, Invalid=3293, Unknown=0, NotChecked=0, Total=3660 [2021-03-11 16:03:14,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2021-03-11 16:03:14,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1263. [2021-03-11 16:03:14,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 1262 states have (on average 3.115689381933439) internal successors, (3932), 1262 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:14,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 3932 transitions. [2021-03-11 16:03:14,459 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 3932 transitions. Word has length 34 [2021-03-11 16:03:14,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:03:14,459 INFO L480 AbstractCegarLoop]: Abstraction has 1263 states and 3932 transitions. [2021-03-11 16:03:14,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:14,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 3932 transitions. [2021-03-11 16:03:14,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:03:14,461 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:03:14,461 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:03:14,461 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-03-11 16:03:14,461 INFO L428 AbstractCegarLoop]: === Iteration 80 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:03:14,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:03:14,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1869557642, now seen corresponding path program 80 times [2021-03-11 16:03:14,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:03:14,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397434185] [2021-03-11 16:03:14,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:03:14,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:03:14,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:14,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:03:14,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:14,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:14,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:14,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:14,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:14,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:14,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:14,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:14,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:14,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:14,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:14,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:14,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:14,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:14,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:14,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:14,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:14,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:14,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:14,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:14,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:14,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:14,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:14,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:14,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:14,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:14,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:14,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:14,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:14,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:14,701 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:03:14,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:14,728 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:03:14,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:14,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:03:14,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397434185] [2021-03-11 16:03:14,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:03:14,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:03:14,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005333633] [2021-03-11 16:03:14,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:03:14,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:03:14,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:03:14,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:03:14,731 INFO L87 Difference]: Start difference. First operand 1263 states and 3932 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:16,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:03:16,518 INFO L93 Difference]: Finished difference Result 1540 states and 4695 transitions. [2021-03-11 16:03:16,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 16:03:16,519 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:03:16,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:03:16,521 INFO L225 Difference]: With dead ends: 1540 [2021-03-11 16:03:16,521 INFO L226 Difference]: Without dead ends: 1479 [2021-03-11 16:03:16,522 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 909.7ms TimeCoverageRelationStatistics Valid=196, Invalid=1874, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 16:03:16,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2021-03-11 16:03:16,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1265. [2021-03-11 16:03:16,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 1264 states have (on average 3.115506329113924) internal successors, (3938), 1264 states have internal predecessors, (3938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:16,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 3938 transitions. [2021-03-11 16:03:16,536 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 3938 transitions. Word has length 34 [2021-03-11 16:03:16,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:03:16,536 INFO L480 AbstractCegarLoop]: Abstraction has 1265 states and 3938 transitions. [2021-03-11 16:03:16,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:16,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 3938 transitions. [2021-03-11 16:03:16,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:03:16,538 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:03:16,538 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:03:16,538 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-03-11 16:03:16,539 INFO L428 AbstractCegarLoop]: === Iteration 81 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:03:16,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:03:16,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1467485330, now seen corresponding path program 81 times [2021-03-11 16:03:16,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:03:16,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989323584] [2021-03-11 16:03:16,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:03:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:03:16,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:16,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:03:16,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:16,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:16,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:16,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:16,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:16,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:16,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:16,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:16,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:16,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:16,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:16,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:16,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:16,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:16,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:16,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:16,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:16,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:16,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:16,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:16,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:16,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:16,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:16,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:16,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:16,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:16,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:16,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:16,794 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:03:16,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:03:16,818 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:03:16,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:16,843 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:03:16,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:16,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:03:16,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989323584] [2021-03-11 16:03:16,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:03:16,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:03:16,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506959547] [2021-03-11 16:03:16,846 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:03:16,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:03:16,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:03:16,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:03:16,847 INFO L87 Difference]: Start difference. First operand 1265 states and 3938 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:19,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:03:19,679 INFO L93 Difference]: Finished difference Result 1925 states and 5896 transitions. [2021-03-11 16:03:19,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-11 16:03:19,679 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:03:19,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:03:19,683 INFO L225 Difference]: With dead ends: 1925 [2021-03-11 16:03:19,683 INFO L226 Difference]: Without dead ends: 1863 [2021-03-11 16:03:19,683 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 1415.8ms TimeCoverageRelationStatistics Valid=326, Invalid=3214, Unknown=0, NotChecked=0, Total=3540 [2021-03-11 16:03:19,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2021-03-11 16:03:19,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1268. [2021-03-11 16:03:19,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 1267 states have (on average 3.111286503551697) internal successors, (3942), 1267 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:19,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 3942 transitions. [2021-03-11 16:03:19,699 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 3942 transitions. Word has length 34 [2021-03-11 16:03:19,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:03:19,699 INFO L480 AbstractCegarLoop]: Abstraction has 1268 states and 3942 transitions. [2021-03-11 16:03:19,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:19,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 3942 transitions. [2021-03-11 16:03:19,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:03:19,701 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:03:19,701 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:03:19,701 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-03-11 16:03:19,701 INFO L428 AbstractCegarLoop]: === Iteration 82 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:03:19,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:03:19,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1760326312, now seen corresponding path program 82 times [2021-03-11 16:03:19,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:03:19,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800772219] [2021-03-11 16:03:19,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:03:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:03:19,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:19,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:03:19,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:19,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:19,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:19,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:19,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:19,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:19,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:19,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:19,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:19,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:19,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:19,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:19,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:19,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:19,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:19,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:19,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:19,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:19,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:19,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:19,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:19,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:19,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:19,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:19,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:19,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:19,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:19,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:19,939 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:03:19,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:03:19,962 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:03:19,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:19,987 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:03:19,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:19,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:03:19,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800772219] [2021-03-11 16:03:19,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:03:19,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:03:19,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768029295] [2021-03-11 16:03:19,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:03:19,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:03:19,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:03:19,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:03:19,991 INFO L87 Difference]: Start difference. First operand 1268 states and 3942 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:22,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:03:22,107 INFO L93 Difference]: Finished difference Result 1613 states and 4878 transitions. [2021-03-11 16:03:22,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-11 16:03:22,107 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:03:22,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:03:22,110 INFO L225 Difference]: With dead ends: 1613 [2021-03-11 16:03:22,110 INFO L226 Difference]: Without dead ends: 1586 [2021-03-11 16:03:22,110 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 1119.8ms TimeCoverageRelationStatistics Valid=241, Invalid=2309, Unknown=0, NotChecked=0, Total=2550 [2021-03-11 16:03:22,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2021-03-11 16:03:22,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1268. [2021-03-11 16:03:22,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 1267 states have (on average 3.110497237569061) internal successors, (3941), 1267 states have internal predecessors, (3941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:22,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 3941 transitions. [2021-03-11 16:03:22,125 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 3941 transitions. Word has length 34 [2021-03-11 16:03:22,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:03:22,125 INFO L480 AbstractCegarLoop]: Abstraction has 1268 states and 3941 transitions. [2021-03-11 16:03:22,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:22,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 3941 transitions. [2021-03-11 16:03:22,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:03:22,127 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:03:22,127 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:03:22,127 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-03-11 16:03:22,127 INFO L428 AbstractCegarLoop]: === Iteration 83 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:03:22,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:03:22,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1471864690, now seen corresponding path program 83 times [2021-03-11 16:03:22,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:03:22,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124510452] [2021-03-11 16:03:22,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:03:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:03:22,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:22,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:03:22,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:22,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:22,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:22,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:22,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:22,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:22,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:22,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:22,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:22,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:22,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:22,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:22,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:22,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:22,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:22,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:22,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:22,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:22,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:22,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:22,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:22,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:22,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:22,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:22,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:22,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:22,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:22,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:22,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:22,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:22,378 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:03:22,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:22,404 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:03:22,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:22,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:03:22,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124510452] [2021-03-11 16:03:22,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:03:22,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:03:22,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644257533] [2021-03-11 16:03:22,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:03:22,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:03:22,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:03:22,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:03:22,408 INFO L87 Difference]: Start difference. First operand 1268 states and 3941 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:24,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:03:24,266 INFO L93 Difference]: Finished difference Result 1558 states and 4698 transitions. [2021-03-11 16:03:24,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 16:03:24,266 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:03:24,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:03:24,269 INFO L225 Difference]: With dead ends: 1558 [2021-03-11 16:03:24,269 INFO L226 Difference]: Without dead ends: 1519 [2021-03-11 16:03:24,269 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 901.6ms TimeCoverageRelationStatistics Valid=184, Invalid=1796, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 16:03:24,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2021-03-11 16:03:24,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1268. [2021-03-11 16:03:24,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 1267 states have (on average 3.1097079715864244) internal successors, (3940), 1267 states have internal predecessors, (3940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:24,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 3940 transitions. [2021-03-11 16:03:24,283 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 3940 transitions. Word has length 34 [2021-03-11 16:03:24,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:03:24,283 INFO L480 AbstractCegarLoop]: Abstraction has 1268 states and 3940 transitions. [2021-03-11 16:03:24,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:24,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 3940 transitions. [2021-03-11 16:03:24,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:03:24,285 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:03:24,285 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:03:24,285 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-03-11 16:03:24,285 INFO L428 AbstractCegarLoop]: === Iteration 84 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:03:24,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:03:24,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1109748560, now seen corresponding path program 84 times [2021-03-11 16:03:24,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:03:24,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266425607] [2021-03-11 16:03:24,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:03:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:03:24,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:24,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:03:24,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:24,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:24,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:24,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:24,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:24,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:24,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:24,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:24,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:24,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:24,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:24,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:24,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:24,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:24,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:24,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:24,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:24,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:24,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:24,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:24,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:24,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:24,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:24,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:24,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:24,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:24,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:24,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:24,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:24,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:24,503 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:03:24,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:24,527 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:03:24,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:24,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:03:24,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266425607] [2021-03-11 16:03:24,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:03:24,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:03:24,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804559124] [2021-03-11 16:03:24,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:03:24,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:03:24,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:03:24,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:03:24,530 INFO L87 Difference]: Start difference. First operand 1268 states and 3940 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:26,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:03:26,212 INFO L93 Difference]: Finished difference Result 1514 states and 4678 transitions. [2021-03-11 16:03:26,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-11 16:03:26,213 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:03:26,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:03:26,215 INFO L225 Difference]: With dead ends: 1514 [2021-03-11 16:03:26,215 INFO L226 Difference]: Without dead ends: 1465 [2021-03-11 16:03:26,216 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 855.0ms TimeCoverageRelationStatistics Valid=191, Invalid=1789, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 16:03:26,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2021-03-11 16:03:26,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1273. [2021-03-11 16:03:26,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 1272 states have (on average 3.106918238993711) internal successors, (3952), 1272 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:26,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 3952 transitions. [2021-03-11 16:03:26,229 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 3952 transitions. Word has length 34 [2021-03-11 16:03:26,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:03:26,229 INFO L480 AbstractCegarLoop]: Abstraction has 1273 states and 3952 transitions. [2021-03-11 16:03:26,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:26,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 3952 transitions. [2021-03-11 16:03:26,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:03:26,231 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:03:26,231 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:03:26,231 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-03-11 16:03:26,231 INFO L428 AbstractCegarLoop]: === Iteration 85 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:03:26,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:03:26,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1958588386, now seen corresponding path program 85 times [2021-03-11 16:03:26,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:03:26,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842285849] [2021-03-11 16:03:26,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:03:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:03:26,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:26,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:03:26,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:26,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:26,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:26,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:26,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:26,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:26,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:26,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:26,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:26,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:26,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:26,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:26,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:26,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:26,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:26,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:26,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:26,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:26,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:26,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:26,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:26,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:26,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:26,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:26,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:26,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:26,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:26,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:26,444 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:03:26,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:26,453 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:03:26,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:26,476 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:03:26,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:03:26,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842285849] [2021-03-11 16:03:26,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:03:26,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 16:03:26,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934748404] [2021-03-11 16:03:26,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 16:03:26,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:03:26,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 16:03:26,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-03-11 16:03:26,480 INFO L87 Difference]: Start difference. First operand 1273 states and 3952 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:27,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:03:27,876 INFO L93 Difference]: Finished difference Result 1500 states and 4619 transitions. [2021-03-11 16:03:27,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-11 16:03:27,876 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:03:27,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:03:27,879 INFO L225 Difference]: With dead ends: 1500 [2021-03-11 16:03:27,879 INFO L226 Difference]: Without dead ends: 1471 [2021-03-11 16:03:27,879 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 683.2ms TimeCoverageRelationStatistics Valid=141, Invalid=1191, Unknown=0, NotChecked=0, Total=1332 [2021-03-11 16:03:27,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2021-03-11 16:03:27,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1291. [2021-03-11 16:03:27,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 1290 states have (on average 3.108527131782946) internal successors, (4010), 1290 states have internal predecessors, (4010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:27,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 4010 transitions. [2021-03-11 16:03:27,904 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 4010 transitions. Word has length 34 [2021-03-11 16:03:27,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:03:27,905 INFO L480 AbstractCegarLoop]: Abstraction has 1291 states and 4010 transitions. [2021-03-11 16:03:27,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:27,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 4010 transitions. [2021-03-11 16:03:27,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:03:27,907 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:03:27,908 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:03:27,908 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-03-11 16:03:27,908 INFO L428 AbstractCegarLoop]: === Iteration 86 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:03:27,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:03:27,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1072790106, now seen corresponding path program 86 times [2021-03-11 16:03:27,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:03:27,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71592468] [2021-03-11 16:03:27,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:03:27,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:03:27,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:27,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:03:27,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:27,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:27,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:27,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:27,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:27,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:27,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:27,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:27,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:27,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:27,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:27,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:27,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:27,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:28,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:28,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:28,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:28,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:28,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:28,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:28,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:28,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:28,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:28,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:28,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:28,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:28,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:28,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:28,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:28,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:28,145 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:03:28,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:28,170 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:03:28,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:28,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:03:28,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71592468] [2021-03-11 16:03:28,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:03:28,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:03:28,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727967694] [2021-03-11 16:03:28,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:03:28,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:03:28,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:03:28,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:03:28,173 INFO L87 Difference]: Start difference. First operand 1291 states and 4010 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:29,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:03:29,781 INFO L93 Difference]: Finished difference Result 1560 states and 4769 transitions. [2021-03-11 16:03:29,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 16:03:29,782 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:03:29,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:03:29,784 INFO L225 Difference]: With dead ends: 1560 [2021-03-11 16:03:29,784 INFO L226 Difference]: Without dead ends: 1515 [2021-03-11 16:03:29,784 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 820.9ms TimeCoverageRelationStatistics Valid=169, Invalid=1553, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 16:03:29,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2021-03-11 16:03:29,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1287. [2021-03-11 16:03:29,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1286 states have (on average 3.1104199066874028) internal successors, (4000), 1286 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:29,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 4000 transitions. [2021-03-11 16:03:29,800 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 4000 transitions. Word has length 34 [2021-03-11 16:03:29,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:03:29,800 INFO L480 AbstractCegarLoop]: Abstraction has 1287 states and 4000 transitions. [2021-03-11 16:03:29,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:29,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 4000 transitions. [2021-03-11 16:03:29,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:03:29,801 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:03:29,801 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:03:29,802 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-03-11 16:03:29,802 INFO L428 AbstractCegarLoop]: === Iteration 87 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:03:29,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:03:29,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1534059796, now seen corresponding path program 87 times [2021-03-11 16:03:29,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:03:29,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599566206] [2021-03-11 16:03:29,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:03:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:03:29,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:29,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:03:29,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:29,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:29,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:29,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:29,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:29,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:29,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:29,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:29,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:29,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:29,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:29,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:29,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:29,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:29,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:29,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:29,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:29,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:29,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:29,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:29,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:29,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:29,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:29,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:29,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:29,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:30,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:30,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:30,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:30,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:30,060 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:03:30,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:30,087 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:03:30,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:30,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:03:30,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599566206] [2021-03-11 16:03:30,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:03:30,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:03:30,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211646837] [2021-03-11 16:03:30,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:03:30,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:03:30,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:03:30,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:03:30,091 INFO L87 Difference]: Start difference. First operand 1287 states and 4000 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:32,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:03:32,203 INFO L93 Difference]: Finished difference Result 1560 states and 4805 transitions. [2021-03-11 16:03:32,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-11 16:03:32,204 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:03:32,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:03:32,206 INFO L225 Difference]: With dead ends: 1560 [2021-03-11 16:03:32,206 INFO L226 Difference]: Without dead ends: 1511 [2021-03-11 16:03:32,207 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 1094.9ms TimeCoverageRelationStatistics Valid=241, Invalid=2411, Unknown=0, NotChecked=0, Total=2652 [2021-03-11 16:03:32,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2021-03-11 16:03:32,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1288. [2021-03-11 16:03:32,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 1287 states have (on average 3.1095571095571097) internal successors, (4002), 1287 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:32,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 4002 transitions. [2021-03-11 16:03:32,221 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 4002 transitions. Word has length 34 [2021-03-11 16:03:32,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:03:32,221 INFO L480 AbstractCegarLoop]: Abstraction has 1288 states and 4002 transitions. [2021-03-11 16:03:32,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:32,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 4002 transitions. [2021-03-11 16:03:32,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:03:32,223 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:03:32,223 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:03:32,223 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-03-11 16:03:32,223 INFO L428 AbstractCegarLoop]: === Iteration 88 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:03:32,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:03:32,223 INFO L82 PathProgramCache]: Analyzing trace with hash 246406558, now seen corresponding path program 88 times [2021-03-11 16:03:32,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:03:32,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088052121] [2021-03-11 16:03:32,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:03:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:03:32,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:32,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:03:32,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:32,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:32,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:32,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:32,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:32,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:32,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:32,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:32,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:32,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:32,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:32,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:32,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:32,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:32,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:32,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:32,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:32,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:32,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:32,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:32,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:32,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:32,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:32,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:32,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:32,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:32,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:32,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:32,445 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:03:32,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:03:32,470 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:03:32,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:32,496 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:03:32,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:32,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:03:32,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088052121] [2021-03-11 16:03:32,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:03:32,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:03:32,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416090524] [2021-03-11 16:03:32,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:03:32,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:03:32,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:03:32,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:03:32,500 INFO L87 Difference]: Start difference. First operand 1288 states and 4002 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:35,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:03:35,772 INFO L93 Difference]: Finished difference Result 1829 states and 5625 transitions. [2021-03-11 16:03:35,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-11 16:03:35,773 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:03:35,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:03:35,776 INFO L225 Difference]: With dead ends: 1829 [2021-03-11 16:03:35,776 INFO L226 Difference]: Without dead ends: 1755 [2021-03-11 16:03:35,776 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1145 ImplicationChecksByTransitivity, 1514.0ms TimeCoverageRelationStatistics Valid=369, Invalid=3921, Unknown=0, NotChecked=0, Total=4290 [2021-03-11 16:03:35,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2021-03-11 16:03:35,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1294. [2021-03-11 16:03:35,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1293 states have (on average 3.1059551430781127) internal successors, (4016), 1293 states have internal predecessors, (4016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:35,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 4016 transitions. [2021-03-11 16:03:35,791 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 4016 transitions. Word has length 34 [2021-03-11 16:03:35,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:03:35,791 INFO L480 AbstractCegarLoop]: Abstraction has 1294 states and 4016 transitions. [2021-03-11 16:03:35,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:35,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 4016 transitions. [2021-03-11 16:03:35,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:03:35,793 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:03:35,793 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:03:35,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-03-11 16:03:35,793 INFO L428 AbstractCegarLoop]: === Iteration 89 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:03:35,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:03:35,793 INFO L82 PathProgramCache]: Analyzing trace with hash 539247540, now seen corresponding path program 89 times [2021-03-11 16:03:35,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:03:35,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020954691] [2021-03-11 16:03:35,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:03:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:03:35,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:35,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:03:35,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:35,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:35,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:35,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:35,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:35,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:35,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:35,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:35,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:35,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:35,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:35,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:35,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:35,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:35,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:35,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:35,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:35,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:35,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:35,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:35,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:35,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:35,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:35,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:35,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:35,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:36,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:36,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:36,028 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:03:36,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:03:36,053 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:03:36,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:36,086 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:03:36,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:36,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:03:36,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020954691] [2021-03-11 16:03:36,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:03:36,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:03:36,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557908471] [2021-03-11 16:03:36,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:03:36,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:03:36,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:03:36,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:03:36,089 INFO L87 Difference]: Start difference. First operand 1294 states and 4016 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:38,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:03:38,907 INFO L93 Difference]: Finished difference Result 1655 states and 5076 transitions. [2021-03-11 16:03:38,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-03-11 16:03:38,907 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:03:38,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:03:38,910 INFO L225 Difference]: With dead ends: 1655 [2021-03-11 16:03:38,910 INFO L226 Difference]: Without dead ends: 1628 [2021-03-11 16:03:38,911 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 1278.8ms TimeCoverageRelationStatistics Valid=282, Invalid=2910, Unknown=0, NotChecked=0, Total=3192 [2021-03-11 16:03:38,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2021-03-11 16:03:38,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1293. [2021-03-11 16:03:38,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1292 states have (on average 3.106811145510836) internal successors, (4014), 1292 states have internal predecessors, (4014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:38,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 4014 transitions. [2021-03-11 16:03:38,930 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 4014 transitions. Word has length 34 [2021-03-11 16:03:38,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:03:38,930 INFO L480 AbstractCegarLoop]: Abstraction has 1293 states and 4014 transitions. [2021-03-11 16:03:38,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:38,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 4014 transitions. [2021-03-11 16:03:38,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:03:38,932 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:03:38,932 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:03:38,932 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-03-11 16:03:38,932 INFO L428 AbstractCegarLoop]: === Iteration 90 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:03:38,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:03:38,933 INFO L82 PathProgramCache]: Analyzing trace with hash 250785918, now seen corresponding path program 90 times [2021-03-11 16:03:38,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:03:38,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485371156] [2021-03-11 16:03:38,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:03:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:03:38,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:38,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:03:38,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:38,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:38,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:38,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:38,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:38,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:38,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:38,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:38,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:38,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:38,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:38,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:39,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:39,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:39,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:39,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:39,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:39,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:39,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:39,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:39,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:39,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:39,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:39,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:39,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:39,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:39,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:39,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:39,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:39,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:39,194 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:03:39,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:39,221 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:03:39,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:39,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:03:39,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485371156] [2021-03-11 16:03:39,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:03:39,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:03:39,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028092145] [2021-03-11 16:03:39,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:03:39,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:03:39,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:03:39,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:03:39,224 INFO L87 Difference]: Start difference. First operand 1293 states and 4014 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:40,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:03:40,902 INFO L93 Difference]: Finished difference Result 1527 states and 4690 transitions. [2021-03-11 16:03:40,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 16:03:40,903 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:03:40,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:03:40,906 INFO L225 Difference]: With dead ends: 1527 [2021-03-11 16:03:40,906 INFO L226 Difference]: Without dead ends: 1490 [2021-03-11 16:03:40,906 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 918.2ms TimeCoverageRelationStatistics Valid=190, Invalid=1790, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 16:03:40,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2021-03-11 16:03:40,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1294. [2021-03-11 16:03:40,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1293 states have (on average 3.1051817478731634) internal successors, (4015), 1293 states have internal predecessors, (4015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:40,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 4015 transitions. [2021-03-11 16:03:40,920 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 4015 transitions. Word has length 34 [2021-03-11 16:03:40,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:03:40,920 INFO L480 AbstractCegarLoop]: Abstraction has 1294 states and 4015 transitions. [2021-03-11 16:03:40,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:40,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 4015 transitions. [2021-03-11 16:03:40,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:03:40,921 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:03:40,921 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:03:40,922 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-03-11 16:03:40,922 INFO L428 AbstractCegarLoop]: === Iteration 91 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:03:40,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:03:40,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1316577154, now seen corresponding path program 91 times [2021-03-11 16:03:40,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:03:40,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446139021] [2021-03-11 16:03:40,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:03:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:03:40,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:40,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:03:40,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:40,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:40,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:40,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:40,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:40,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:40,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:40,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:40,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:40,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:40,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:40,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:40,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:40,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:41,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:41,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:41,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:41,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:41,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:41,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:41,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:41,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:41,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:41,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:41,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:41,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:41,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:41,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:41,149 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:03:41,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:41,163 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:03:41,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:41,189 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:03:41,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:41,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:03:41,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446139021] [2021-03-11 16:03:41,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:03:41,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:03:41,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696054164] [2021-03-11 16:03:41,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:03:41,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:03:41,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:03:41,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:03:41,192 INFO L87 Difference]: Start difference. First operand 1294 states and 4015 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:43,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:03:43,001 INFO L93 Difference]: Finished difference Result 1506 states and 4621 transitions. [2021-03-11 16:03:43,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-11 16:03:43,002 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:03:43,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:03:43,004 INFO L225 Difference]: With dead ends: 1506 [2021-03-11 16:03:43,004 INFO L226 Difference]: Without dead ends: 1469 [2021-03-11 16:03:43,004 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 894.8ms TimeCoverageRelationStatistics Valid=170, Invalid=1552, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 16:03:43,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2021-03-11 16:03:43,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1296. [2021-03-11 16:03:43,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1295 states have (on average 3.1034749034749036) internal successors, (4019), 1295 states have internal predecessors, (4019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:43,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 4019 transitions. [2021-03-11 16:03:43,021 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 4019 transitions. Word has length 34 [2021-03-11 16:03:43,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:03:43,022 INFO L480 AbstractCegarLoop]: Abstraction has 1296 states and 4019 transitions. [2021-03-11 16:03:43,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:43,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 4019 transitions. [2021-03-11 16:03:43,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:03:43,024 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:03:43,024 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:03:43,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-03-11 16:03:43,024 INFO L428 AbstractCegarLoop]: === Iteration 92 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:03:43,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:03:43,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1861040308, now seen corresponding path program 92 times [2021-03-11 16:03:43,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:03:43,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765257573] [2021-03-11 16:03:43,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:03:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:03:43,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:43,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:03:43,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:43,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:43,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:43,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:43,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:43,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:43,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:43,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:43,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:43,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:43,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:43,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:43,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:43,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:43,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:43,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:43,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:43,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:43,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:43,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:43,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:43,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:43,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:43,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:43,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:43,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:43,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:43,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:43,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:43,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:43,308 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:03:43,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:43,335 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:03:43,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:43,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:03:43,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765257573] [2021-03-11 16:03:43,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:03:43,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:03:43,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196318397] [2021-03-11 16:03:43,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:03:43,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:03:43,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:03:43,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:03:43,339 INFO L87 Difference]: Start difference. First operand 1296 states and 4019 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:44,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:03:44,966 INFO L93 Difference]: Finished difference Result 1473 states and 4540 transitions. [2021-03-11 16:03:44,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-11 16:03:44,967 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:03:44,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:03:44,970 INFO L225 Difference]: With dead ends: 1473 [2021-03-11 16:03:44,970 INFO L226 Difference]: Without dead ends: 1434 [2021-03-11 16:03:44,970 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 890.7ms TimeCoverageRelationStatistics Valid=179, Invalid=1713, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 16:03:44,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2021-03-11 16:03:44,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1293. [2021-03-11 16:03:44,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1292 states have (on average 3.1060371517027865) internal successors, (4013), 1292 states have internal predecessors, (4013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:44,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 4013 transitions. [2021-03-11 16:03:44,984 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 4013 transitions. Word has length 34 [2021-03-11 16:03:44,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:03:44,984 INFO L480 AbstractCegarLoop]: Abstraction has 1293 states and 4013 transitions. [2021-03-11 16:03:44,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:44,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 4013 transitions. [2021-03-11 16:03:44,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:03:44,985 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:03:44,986 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:03:44,986 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-03-11 16:03:44,986 INFO L428 AbstractCegarLoop]: === Iteration 93 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:03:44,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:03:44,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1318470512, now seen corresponding path program 93 times [2021-03-11 16:03:44,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:03:44,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71967929] [2021-03-11 16:03:44,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:03:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:03:44,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:44,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:03:45,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:45,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:45,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:45,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:45,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:45,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:45,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:45,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:45,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:45,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:45,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:45,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:45,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:45,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:45,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:45,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:45,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:45,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:45,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:45,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:45,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:45,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:45,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:45,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:45,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:45,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:45,203 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:03:45,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:03:45,227 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:03:45,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:45,237 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:03:45,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:45,263 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:03:45,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:45,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:03:45,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71967929] [2021-03-11 16:03:45,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:03:45,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:03:45,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177284555] [2021-03-11 16:03:45,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:03:45,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:03:45,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:03:45,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:03:45,267 INFO L87 Difference]: Start difference. First operand 1293 states and 4013 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:48,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:03:48,448 INFO L93 Difference]: Finished difference Result 1775 states and 5505 transitions. [2021-03-11 16:03:48,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-03-11 16:03:48,449 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:03:48,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:03:48,452 INFO L225 Difference]: With dead ends: 1775 [2021-03-11 16:03:48,452 INFO L226 Difference]: Without dead ends: 1746 [2021-03-11 16:03:48,452 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 1523.8ms TimeCoverageRelationStatistics Valid=327, Invalid=3095, Unknown=0, NotChecked=0, Total=3422 [2021-03-11 16:03:48,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2021-03-11 16:03:48,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1301. [2021-03-11 16:03:48,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 1300 states have (on average 3.103846153846154) internal successors, (4035), 1300 states have internal predecessors, (4035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:48,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 4035 transitions. [2021-03-11 16:03:48,467 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 4035 transitions. Word has length 34 [2021-03-11 16:03:48,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:03:48,467 INFO L480 AbstractCegarLoop]: Abstraction has 1301 states and 4035 transitions. [2021-03-11 16:03:48,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:48,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 4035 transitions. [2021-03-11 16:03:48,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:03:48,469 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:03:48,469 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:03:48,469 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-03-11 16:03:48,469 INFO L428 AbstractCegarLoop]: === Iteration 94 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:03:48,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:03:48,469 INFO L82 PathProgramCache]: Analyzing trace with hash 875571372, now seen corresponding path program 94 times [2021-03-11 16:03:48,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:03:48,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471316683] [2021-03-11 16:03:48,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:03:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:03:48,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:48,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:03:48,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:48,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:48,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:48,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:48,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:48,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:48,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:48,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:48,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:48,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:48,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:48,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:48,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:48,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:48,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:48,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:48,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:48,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:48,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:48,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:48,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:48,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:48,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:48,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:48,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:48,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:48,736 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:03:48,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:03:48,760 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:03:48,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:03:48,787 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:03:48,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:48,817 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:03:48,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:48,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:03:48,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471316683] [2021-03-11 16:03:48,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:03:48,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:03:48,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065674837] [2021-03-11 16:03:48,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:03:48,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:03:48,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:03:48,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:03:48,821 INFO L87 Difference]: Start difference. First operand 1301 states and 4035 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:52,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:03:52,612 INFO L93 Difference]: Finished difference Result 1914 states and 5916 transitions. [2021-03-11 16:03:52,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-03-11 16:03:52,613 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:03:52,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:03:52,616 INFO L225 Difference]: With dead ends: 1914 [2021-03-11 16:03:52,616 INFO L226 Difference]: Without dead ends: 1889 [2021-03-11 16:03:52,616 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 1946.7ms TimeCoverageRelationStatistics Valid=410, Invalid=3880, Unknown=0, NotChecked=0, Total=4290 [2021-03-11 16:03:52,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2021-03-11 16:03:52,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1301. [2021-03-11 16:03:52,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 1300 states have (on average 3.103846153846154) internal successors, (4035), 1300 states have internal predecessors, (4035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:52,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 4035 transitions. [2021-03-11 16:03:52,633 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 4035 transitions. Word has length 34 [2021-03-11 16:03:52,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:03:52,633 INFO L480 AbstractCegarLoop]: Abstraction has 1301 states and 4035 transitions. [2021-03-11 16:03:52,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:52,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 4035 transitions. [2021-03-11 16:03:52,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:03:52,634 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:03:52,634 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:03:52,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-03-11 16:03:52,634 INFO L428 AbstractCegarLoop]: === Iteration 95 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:03:52,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:03:52,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1168412354, now seen corresponding path program 95 times [2021-03-11 16:03:52,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:03:52,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195719674] [2021-03-11 16:03:52,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:03:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:03:52,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:52,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:03:52,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:52,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:52,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:52,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:52,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:52,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:52,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:52,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:52,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:52,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:52,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:52,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:52,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:52,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:52,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:52,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:52,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:52,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:52,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:52,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:52,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:52,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:52,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:52,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:52,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:52,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:52,857 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:03:52,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:03:52,886 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:03:52,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:03:52,914 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:03:52,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:52,944 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:03:52,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:52,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:03:52,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195719674] [2021-03-11 16:03:52,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:03:52,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:03:52,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621396627] [2021-03-11 16:03:52,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:03:52,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:03:52,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:03:52,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:03:52,949 INFO L87 Difference]: Start difference. First operand 1301 states and 4035 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:56,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:03:56,612 INFO L93 Difference]: Finished difference Result 1874 states and 5802 transitions. [2021-03-11 16:03:56,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-03-11 16:03:56,613 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:03:56,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:03:56,616 INFO L225 Difference]: With dead ends: 1874 [2021-03-11 16:03:56,616 INFO L226 Difference]: Without dead ends: 1844 [2021-03-11 16:03:56,616 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 1782.2ms TimeCoverageRelationStatistics Valid=382, Invalid=3650, Unknown=0, NotChecked=0, Total=4032 [2021-03-11 16:03:56,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2021-03-11 16:03:56,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1293. [2021-03-11 16:03:56,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1292 states have (on average 3.1060371517027865) internal successors, (4013), 1292 states have internal predecessors, (4013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:56,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 4013 transitions. [2021-03-11 16:03:56,632 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 4013 transitions. Word has length 34 [2021-03-11 16:03:56,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:03:56,632 INFO L480 AbstractCegarLoop]: Abstraction has 1293 states and 4013 transitions. [2021-03-11 16:03:56,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:56,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 4013 transitions. [2021-03-11 16:03:56,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:03:56,633 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:03:56,633 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:03:56,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-03-11 16:03:56,633 INFO L428 AbstractCegarLoop]: === Iteration 96 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:03:56,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:03:56,634 INFO L82 PathProgramCache]: Analyzing trace with hash -412299220, now seen corresponding path program 96 times [2021-03-11 16:03:56,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:03:56,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553202713] [2021-03-11 16:03:56,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:03:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:03:56,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:56,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:03:56,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:56,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:56,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:56,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:56,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:56,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:56,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:56,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:56,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:56,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:56,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:56,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:56,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:56,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:56,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:56,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:56,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:56,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:56,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:56,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:56,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:56,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:56,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:56,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:56,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:56,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:56,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:56,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:56,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:56,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:56,899 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:03:56,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:56,936 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:03:56,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:56,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:03:56,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553202713] [2021-03-11 16:03:56,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:03:56,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:03:56,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823378129] [2021-03-11 16:03:56,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:03:56,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:03:56,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:03:56,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:03:56,940 INFO L87 Difference]: Start difference. First operand 1293 states and 4013 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:59,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:03:59,010 INFO L93 Difference]: Finished difference Result 1576 states and 4797 transitions. [2021-03-11 16:03:59,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-11 16:03:59,011 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:03:59,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:03:59,014 INFO L225 Difference]: With dead ends: 1576 [2021-03-11 16:03:59,015 INFO L226 Difference]: Without dead ends: 1531 [2021-03-11 16:03:59,015 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1012.3ms TimeCoverageRelationStatistics Valid=195, Invalid=1875, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 16:03:59,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2021-03-11 16:03:59,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1297. [2021-03-11 16:03:59,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1297 states, 1296 states have (on average 3.103395061728395) internal successors, (4022), 1296 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:59,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 4022 transitions. [2021-03-11 16:03:59,029 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 4022 transitions. Word has length 34 [2021-03-11 16:03:59,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:03:59,029 INFO L480 AbstractCegarLoop]: Abstraction has 1297 states and 4022 transitions. [2021-03-11 16:03:59,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:03:59,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 4022 transitions. [2021-03-11 16:03:59,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:03:59,031 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:03:59,031 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:03:59,031 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-03-11 16:03:59,031 INFO L428 AbstractCegarLoop]: === Iteration 97 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:03:59,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:03:59,031 INFO L82 PathProgramCache]: Analyzing trace with hash -814371532, now seen corresponding path program 97 times [2021-03-11 16:03:59,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:03:59,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514878770] [2021-03-11 16:03:59,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:03:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:03:59,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:59,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:03:59,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:59,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:59,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:59,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:03:59,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:59,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:59,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:59,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:59,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:59,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:59,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:59,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:03:59,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:59,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:59,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:59,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:59,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:59,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:59,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:59,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:03:59,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:59,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:59,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:59,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:59,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:59,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:59,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:03:59,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:59,280 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:03:59,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:03:59,307 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:03:59,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:03:59,335 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:03:59,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:03:59,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:03:59,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514878770] [2021-03-11 16:03:59,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:03:59,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:03:59,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869299601] [2021-03-11 16:03:59,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:03:59,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:03:59,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:03:59,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:03:59,339 INFO L87 Difference]: Start difference. First operand 1297 states and 4022 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:02,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:04:02,858 INFO L93 Difference]: Finished difference Result 1911 states and 5875 transitions. [2021-03-11 16:04:02,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-03-11 16:04:02,859 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:04:02,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:04:02,862 INFO L225 Difference]: With dead ends: 1911 [2021-03-11 16:04:02,862 INFO L226 Difference]: Without dead ends: 1845 [2021-03-11 16:04:02,863 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 1624.2ms TimeCoverageRelationStatistics Valid=342, Invalid=3564, Unknown=0, NotChecked=0, Total=3906 [2021-03-11 16:04:02,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2021-03-11 16:04:02,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 1294. [2021-03-11 16:04:02,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1293 states have (on average 3.1044083526682136) internal successors, (4014), 1293 states have internal predecessors, (4014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:02,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 4014 transitions. [2021-03-11 16:04:02,878 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 4014 transitions. Word has length 34 [2021-03-11 16:04:02,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:04:02,878 INFO L480 AbstractCegarLoop]: Abstraction has 1294 states and 4014 transitions. [2021-03-11 16:04:02,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:02,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 4014 transitions. [2021-03-11 16:04:02,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:04:02,880 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:04:02,880 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:04:02,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-03-11 16:04:02,880 INFO L428 AbstractCegarLoop]: === Iteration 98 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:04:02,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:04:02,880 INFO L82 PathProgramCache]: Analyzing trace with hash -521530550, now seen corresponding path program 98 times [2021-03-11 16:04:02,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:04:02,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579891206] [2021-03-11 16:04:02,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:04:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:04:02,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:02,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:04:02,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:02,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:02,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:02,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:02,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:02,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:02,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:02,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:02,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:02,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:02,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:02,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:02,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:02,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:02,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:02,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:03,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:03,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:03,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:03,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:03,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:03,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:03,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:03,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:03,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:03,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:03,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:03,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:03,156 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:04:03,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:04:03,184 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:04:03,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:04:03,214 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:04:03,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:03,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:04:03,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579891206] [2021-03-11 16:04:03,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:04:03,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:04:03,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799851649] [2021-03-11 16:04:03,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:04:03,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:04:03,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:04:03,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:04:03,218 INFO L87 Difference]: Start difference. First operand 1294 states and 4014 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:05,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:04:05,705 INFO L93 Difference]: Finished difference Result 1626 states and 4939 transitions. [2021-03-11 16:04:05,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-11 16:04:05,705 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:04:05,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:04:05,708 INFO L225 Difference]: With dead ends: 1626 [2021-03-11 16:04:05,708 INFO L226 Difference]: Without dead ends: 1598 [2021-03-11 16:04:05,709 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 1247.1ms TimeCoverageRelationStatistics Valid=227, Invalid=2223, Unknown=0, NotChecked=0, Total=2450 [2021-03-11 16:04:05,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2021-03-11 16:04:05,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1292. [2021-03-11 16:04:05,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1292 states, 1291 states have (on average 3.106893880712626) internal successors, (4011), 1291 states have internal predecessors, (4011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:05,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 4011 transitions. [2021-03-11 16:04:05,723 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 4011 transitions. Word has length 34 [2021-03-11 16:04:05,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:04:05,723 INFO L480 AbstractCegarLoop]: Abstraction has 1292 states and 4011 transitions. [2021-03-11 16:04:05,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:05,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 4011 transitions. [2021-03-11 16:04:05,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:04:05,725 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:04:05,725 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:04:05,725 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-03-11 16:04:05,725 INFO L428 AbstractCegarLoop]: === Iteration 99 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:04:05,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:04:05,725 INFO L82 PathProgramCache]: Analyzing trace with hash -809992172, now seen corresponding path program 99 times [2021-03-11 16:04:05,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:04:05,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705290486] [2021-03-11 16:04:05,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:04:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:04:05,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:05,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:04:05,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:05,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:05,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:05,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:05,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:05,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:05,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:05,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:05,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:05,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:05,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:05,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:05,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:05,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:05,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:05,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:05,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:05,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:05,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:05,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:05,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:05,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:05,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:05,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:05,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:05,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:05,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:05,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:05,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:05,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:06,009 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:04:06,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:04:06,039 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:04:06,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:06,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:04:06,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705290486] [2021-03-11 16:04:06,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:04:06,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:04:06,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510314739] [2021-03-11 16:04:06,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:04:06,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:04:06,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:04:06,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:04:06,043 INFO L87 Difference]: Start difference. First operand 1292 states and 4011 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:07,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:04:07,993 INFO L93 Difference]: Finished difference Result 1523 states and 4628 transitions. [2021-03-11 16:04:07,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-11 16:04:07,994 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:04:07,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:04:07,997 INFO L225 Difference]: With dead ends: 1523 [2021-03-11 16:04:07,997 INFO L226 Difference]: Without dead ends: 1497 [2021-03-11 16:04:07,997 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 954.3ms TimeCoverageRelationStatistics Valid=167, Invalid=1639, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 16:04:08,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2021-03-11 16:04:08,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1297. [2021-03-11 16:04:08,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1297 states, 1296 states have (on average 3.1010802469135803) internal successors, (4019), 1296 states have internal predecessors, (4019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:08,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 4019 transitions. [2021-03-11 16:04:08,017 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 4019 transitions. Word has length 34 [2021-03-11 16:04:08,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:04:08,017 INFO L480 AbstractCegarLoop]: Abstraction has 1297 states and 4019 transitions. [2021-03-11 16:04:08,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:08,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 4019 transitions. [2021-03-11 16:04:08,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:04:08,019 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:04:08,019 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:04:08,019 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-03-11 16:04:08,019 INFO L428 AbstractCegarLoop]: === Iteration 100 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:04:08,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:04:08,019 INFO L82 PathProgramCache]: Analyzing trace with hash 284099416, now seen corresponding path program 100 times [2021-03-11 16:04:08,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:04:08,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102363827] [2021-03-11 16:04:08,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:04:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:04:08,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:08,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:04:08,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:08,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:08,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:08,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:08,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:08,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:08,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:08,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:08,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:08,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:08,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:08,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:08,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:08,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:08,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:08,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:08,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:08,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:08,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:08,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:08,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:08,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:08,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:08,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:08,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:08,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:08,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:08,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:08,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:08,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:08,314 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:04:08,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:04:08,344 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:04:08,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:08,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:04:08,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102363827] [2021-03-11 16:04:08,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:04:08,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:04:08,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327100188] [2021-03-11 16:04:08,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:04:08,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:04:08,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:04:08,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:04:08,348 INFO L87 Difference]: Start difference. First operand 1297 states and 4019 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:10,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:04:10,507 INFO L93 Difference]: Finished difference Result 1563 states and 4722 transitions. [2021-03-11 16:04:10,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 16:04:10,508 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:04:10,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:04:10,511 INFO L225 Difference]: With dead ends: 1563 [2021-03-11 16:04:10,511 INFO L226 Difference]: Without dead ends: 1528 [2021-03-11 16:04:10,511 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 1097.7ms TimeCoverageRelationStatistics Valid=190, Invalid=1880, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 16:04:10,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-03-11 16:04:10,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1290. [2021-03-11 16:04:10,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1289 states have (on average 3.1093871217998448) internal successors, (4008), 1289 states have internal predecessors, (4008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:10,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 4008 transitions. [2021-03-11 16:04:10,525 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 4008 transitions. Word has length 34 [2021-03-11 16:04:10,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:04:10,526 INFO L480 AbstractCegarLoop]: Abstraction has 1290 states and 4008 transitions. [2021-03-11 16:04:10,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:10,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 4008 transitions. [2021-03-11 16:04:10,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:04:10,527 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:04:10,527 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:04:10,527 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-03-11 16:04:10,527 INFO L428 AbstractCegarLoop]: === Iteration 101 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:04:10,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:04:10,527 INFO L82 PathProgramCache]: Analyzing trace with hash -54665056, now seen corresponding path program 101 times [2021-03-11 16:04:10,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:04:10,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54588019] [2021-03-11 16:04:10,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:04:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:04:10,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:10,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:04:10,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:10,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:10,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:10,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:10,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:10,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:10,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:10,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:10,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:10,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:10,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:10,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:10,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:10,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:10,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:10,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:10,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:10,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:10,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:10,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:10,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:10,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:10,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:10,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:10,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:10,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:10,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:10,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:10,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:10,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:10,796 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:04:10,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:04:10,825 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:04:10,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:10,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:04:10,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54588019] [2021-03-11 16:04:10,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:04:10,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:04:10,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031194993] [2021-03-11 16:04:10,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:04:10,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:04:10,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:04:10,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:04:10,829 INFO L87 Difference]: Start difference. First operand 1290 states and 4008 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:12,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:04:12,985 INFO L93 Difference]: Finished difference Result 1561 states and 4812 transitions. [2021-03-11 16:04:12,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-11 16:04:12,986 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:04:12,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:04:12,988 INFO L225 Difference]: With dead ends: 1561 [2021-03-11 16:04:12,988 INFO L226 Difference]: Without dead ends: 1536 [2021-03-11 16:04:12,988 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 1068.6ms TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 16:04:12,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2021-03-11 16:04:12,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1299. [2021-03-11 16:04:13,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 1298 states have (on average 3.106317411402157) internal successors, (4032), 1298 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:13,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 4032 transitions. [2021-03-11 16:04:13,002 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 4032 transitions. Word has length 34 [2021-03-11 16:04:13,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:04:13,002 INFO L480 AbstractCegarLoop]: Abstraction has 1299 states and 4032 transitions. [2021-03-11 16:04:13,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:13,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 4032 transitions. [2021-03-11 16:04:13,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:04:13,004 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:04:13,004 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:04:13,004 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-03-11 16:04:13,004 INFO L428 AbstractCegarLoop]: === Iteration 102 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:04:13,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:04:13,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1498508830, now seen corresponding path program 102 times [2021-03-11 16:04:13,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:04:13,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282810740] [2021-03-11 16:04:13,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:04:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:04:13,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:13,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:04:13,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:13,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:13,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:13,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:13,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:13,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:13,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:13,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:13,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:13,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:13,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:13,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:13,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:13,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:13,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:13,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:13,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:13,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:13,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:13,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:13,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:13,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:13,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:13,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:13,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:13,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:13,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:13,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:13,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:13,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:13,263 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:04:13,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:04:13,293 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:04:13,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:13,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:04:13,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282810740] [2021-03-11 16:04:13,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:04:13,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:04:13,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509967461] [2021-03-11 16:04:13,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:04:13,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:04:13,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:04:13,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:04:13,297 INFO L87 Difference]: Start difference. First operand 1299 states and 4032 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:14,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:04:14,925 INFO L93 Difference]: Finished difference Result 1534 states and 4730 transitions. [2021-03-11 16:04:14,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-11 16:04:14,926 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:04:14,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:04:14,928 INFO L225 Difference]: With dead ends: 1534 [2021-03-11 16:04:14,928 INFO L226 Difference]: Without dead ends: 1501 [2021-03-11 16:04:14,928 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 874.3ms TimeCoverageRelationStatistics Valid=160, Invalid=1400, Unknown=0, NotChecked=0, Total=1560 [2021-03-11 16:04:14,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2021-03-11 16:04:14,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1303. [2021-03-11 16:04:14,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1303 states, 1302 states have (on average 3.1036866359447006) internal successors, (4041), 1302 states have internal predecessors, (4041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:14,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 4041 transitions. [2021-03-11 16:04:14,942 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 4041 transitions. Word has length 34 [2021-03-11 16:04:14,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:04:14,942 INFO L480 AbstractCegarLoop]: Abstraction has 1303 states and 4041 transitions. [2021-03-11 16:04:14,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:14,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 4041 transitions. [2021-03-11 16:04:14,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:04:14,943 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:04:14,943 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:04:14,943 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-03-11 16:04:14,943 INFO L428 AbstractCegarLoop]: === Iteration 103 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:04:14,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:04:14,943 INFO L82 PathProgramCache]: Analyzing trace with hash 71695506, now seen corresponding path program 103 times [2021-03-11 16:04:14,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:04:14,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691893403] [2021-03-11 16:04:14,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:04:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:04:14,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:14,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:04:14,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:14,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:14,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:14,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:14,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:14,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:14,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:14,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:15,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:15,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:15,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:15,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:15,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:15,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:15,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:15,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:15,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:15,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:15,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:15,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:15,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:15,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:15,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:15,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:15,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:15,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:15,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:15,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:15,180 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:04:15,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:04:15,208 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:04:15,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:04:15,239 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:04:15,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:15,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:04:15,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691893403] [2021-03-11 16:04:15,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:04:15,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:04:15,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239934166] [2021-03-11 16:04:15,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:04:15,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:04:15,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:04:15,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:04:15,243 INFO L87 Difference]: Start difference. First operand 1303 states and 4041 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:17,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:04:17,247 INFO L93 Difference]: Finished difference Result 1553 states and 4775 transitions. [2021-03-11 16:04:17,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 16:04:17,248 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:04:17,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:04:17,250 INFO L225 Difference]: With dead ends: 1553 [2021-03-11 16:04:17,250 INFO L226 Difference]: Without dead ends: 1512 [2021-03-11 16:04:17,250 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 967.8ms TimeCoverageRelationStatistics Valid=175, Invalid=1631, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 16:04:17,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2021-03-11 16:04:17,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1308. [2021-03-11 16:04:17,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1308 states, 1307 states have (on average 3.1009946442234124) internal successors, (4053), 1307 states have internal predecessors, (4053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:17,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 4053 transitions. [2021-03-11 16:04:17,264 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 4053 transitions. Word has length 34 [2021-03-11 16:04:17,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:04:17,264 INFO L480 AbstractCegarLoop]: Abstraction has 1308 states and 4053 transitions. [2021-03-11 16:04:17,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:17,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 4053 transitions. [2021-03-11 16:04:17,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:04:17,266 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:04:17,266 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:04:17,266 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-03-11 16:04:17,266 INFO L428 AbstractCegarLoop]: === Iteration 104 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:04:17,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:04:17,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1281295406, now seen corresponding path program 104 times [2021-03-11 16:04:17,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:04:17,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599736009] [2021-03-11 16:04:17,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:04:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:04:17,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:17,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:04:17,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:17,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:17,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:17,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:17,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:17,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:17,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:17,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:17,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:17,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:17,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:17,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:17,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:17,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:17,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:17,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:17,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:17,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:17,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:17,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:17,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:17,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:17,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:17,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:17,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:17,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:17,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:17,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:17,499 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:04:17,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:04:17,510 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:04:17,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:04:17,538 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:04:17,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:17,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:04:17,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599736009] [2021-03-11 16:04:17,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:04:17,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 16:04:17,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180698107] [2021-03-11 16:04:17,541 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 16:04:17,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:04:17,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 16:04:17,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-03-11 16:04:17,542 INFO L87 Difference]: Start difference. First operand 1308 states and 4053 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:19,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:04:19,187 INFO L93 Difference]: Finished difference Result 1520 states and 4679 transitions. [2021-03-11 16:04:19,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-11 16:04:19,188 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:04:19,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:04:19,190 INFO L225 Difference]: With dead ends: 1520 [2021-03-11 16:04:19,190 INFO L226 Difference]: Without dead ends: 1491 [2021-03-11 16:04:19,190 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 827.9ms TimeCoverageRelationStatistics Valid=143, Invalid=1189, Unknown=0, NotChecked=0, Total=1332 [2021-03-11 16:04:19,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2021-03-11 16:04:19,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1334. [2021-03-11 16:04:19,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1333 states have (on average 3.1035258814703677) internal successors, (4137), 1333 states have internal predecessors, (4137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:19,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 4137 transitions. [2021-03-11 16:04:19,205 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 4137 transitions. Word has length 34 [2021-03-11 16:04:19,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:04:19,205 INFO L480 AbstractCegarLoop]: Abstraction has 1334 states and 4137 transitions. [2021-03-11 16:04:19,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:19,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 4137 transitions. [2021-03-11 16:04:19,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:04:19,207 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:04:19,207 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:04:19,207 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-03-11 16:04:19,207 INFO L428 AbstractCegarLoop]: === Iteration 105 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:04:19,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:04:19,207 INFO L82 PathProgramCache]: Analyzing trace with hash 2127873610, now seen corresponding path program 105 times [2021-03-11 16:04:19,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:04:19,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324515009] [2021-03-11 16:04:19,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:04:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:04:19,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:19,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:04:19,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:19,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:19,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:19,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:19,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:19,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:19,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:19,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:19,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:19,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:19,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:19,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:19,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:19,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:19,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:19,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:19,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:19,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:19,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:19,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:19,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:19,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:19,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:19,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:19,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:19,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:19,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:19,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:19,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:19,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:19,475 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:04:19,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:04:19,505 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:04:19,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:19,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:04:19,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324515009] [2021-03-11 16:04:19,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:04:19,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:04:19,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765922901] [2021-03-11 16:04:19,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:04:19,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:04:19,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:04:19,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:04:19,510 INFO L87 Difference]: Start difference. First operand 1334 states and 4137 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:21,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:04:21,392 INFO L93 Difference]: Finished difference Result 1564 states and 4781 transitions. [2021-03-11 16:04:21,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-11 16:04:21,393 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:04:21,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:04:21,395 INFO L225 Difference]: With dead ends: 1564 [2021-03-11 16:04:21,395 INFO L226 Difference]: Without dead ends: 1539 [2021-03-11 16:04:21,395 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 965.9ms TimeCoverageRelationStatistics Valid=165, Invalid=1475, Unknown=0, NotChecked=0, Total=1640 [2021-03-11 16:04:21,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2021-03-11 16:04:21,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 1318. [2021-03-11 16:04:21,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1317 states have (on average 3.1017463933181473) internal successors, (4085), 1317 states have internal predecessors, (4085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:21,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 4085 transitions. [2021-03-11 16:04:21,409 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 4085 transitions. Word has length 34 [2021-03-11 16:04:21,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:04:21,410 INFO L480 AbstractCegarLoop]: Abstraction has 1318 states and 4085 transitions. [2021-03-11 16:04:21,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:21,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 4085 transitions. [2021-03-11 16:04:21,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:04:21,411 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:04:21,411 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:04:21,411 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-03-11 16:04:21,411 INFO L428 AbstractCegarLoop]: === Iteration 106 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:04:21,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:04:21,412 INFO L82 PathProgramCache]: Analyzing trace with hash -613919800, now seen corresponding path program 106 times [2021-03-11 16:04:21,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:04:21,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317239502] [2021-03-11 16:04:21,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:04:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:04:21,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:21,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:04:21,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:21,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:21,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:21,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:21,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:21,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:21,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:21,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:21,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:21,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:21,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:21,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:21,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:21,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:21,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:21,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:21,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:21,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:21,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:21,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:21,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:21,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:21,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:21,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:21,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:21,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:21,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:21,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:21,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:21,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:21,676 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:04:21,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:04:21,707 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:04:21,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:21,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:04:21,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317239502] [2021-03-11 16:04:21,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:04:21,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:04:21,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964500519] [2021-03-11 16:04:21,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:04:21,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:04:21,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:04:21,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:04:21,711 INFO L87 Difference]: Start difference. First operand 1318 states and 4085 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:23,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:04:23,515 INFO L93 Difference]: Finished difference Result 1530 states and 4681 transitions. [2021-03-11 16:04:23,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-11 16:04:23,516 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:04:23,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:04:23,518 INFO L225 Difference]: With dead ends: 1530 [2021-03-11 16:04:23,518 INFO L226 Difference]: Without dead ends: 1477 [2021-03-11 16:04:23,519 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 881.7ms TimeCoverageRelationStatistics Valid=147, Invalid=1335, Unknown=0, NotChecked=0, Total=1482 [2021-03-11 16:04:23,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2021-03-11 16:04:23,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 1302. [2021-03-11 16:04:23,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 1301 states have (on average 3.105303612605688) internal successors, (4040), 1301 states have internal predecessors, (4040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:23,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 4040 transitions. [2021-03-11 16:04:23,533 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 4040 transitions. Word has length 34 [2021-03-11 16:04:23,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:04:23,533 INFO L480 AbstractCegarLoop]: Abstraction has 1302 states and 4040 transitions. [2021-03-11 16:04:23,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:23,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 4040 transitions. [2021-03-11 16:04:23,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:04:23,534 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:04:23,534 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:04:23,534 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-03-11 16:04:23,535 INFO L428 AbstractCegarLoop]: === Iteration 107 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:04:23,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:04:23,535 INFO L82 PathProgramCache]: Analyzing trace with hash -592157912, now seen corresponding path program 107 times [2021-03-11 16:04:23,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:04:23,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931219229] [2021-03-11 16:04:23,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:04:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:04:23,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:23,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:04:23,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:23,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:23,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:23,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:23,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:23,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:23,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:23,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:23,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:23,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:23,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:23,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:23,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:23,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:23,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:23,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:23,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:23,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:23,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:23,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:23,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:23,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:23,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:23,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:23,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:23,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:23,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:23,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:23,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:23,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:23,816 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:04:23,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:04:23,846 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:04:23,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:23,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:04:23,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931219229] [2021-03-11 16:04:23,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:04:23,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:04:23,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271901221] [2021-03-11 16:04:23,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:04:23,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:04:23,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:04:23,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:04:23,850 INFO L87 Difference]: Start difference. First operand 1302 states and 4040 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:26,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:04:26,106 INFO L93 Difference]: Finished difference Result 1561 states and 4806 transitions. [2021-03-11 16:04:26,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-11 16:04:26,107 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:04:26,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:04:26,109 INFO L225 Difference]: With dead ends: 1561 [2021-03-11 16:04:26,109 INFO L226 Difference]: Without dead ends: 1536 [2021-03-11 16:04:26,109 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 1154.8ms TimeCoverageRelationStatistics Valid=210, Invalid=1952, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 16:04:26,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2021-03-11 16:04:26,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1302. [2021-03-11 16:04:26,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 1301 states have (on average 3.105303612605688) internal successors, (4040), 1301 states have internal predecessors, (4040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:26,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 4040 transitions. [2021-03-11 16:04:26,127 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 4040 transitions. Word has length 34 [2021-03-11 16:04:26,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:04:26,127 INFO L480 AbstractCegarLoop]: Abstraction has 1302 states and 4040 transitions. [2021-03-11 16:04:26,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:26,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 4040 transitions. [2021-03-11 16:04:26,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:04:26,129 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:04:26,129 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:04:26,129 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-03-11 16:04:26,129 INFO L428 AbstractCegarLoop]: === Iteration 108 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:04:26,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:04:26,129 INFO L82 PathProgramCache]: Analyzing trace with hash 961015974, now seen corresponding path program 108 times [2021-03-11 16:04:26,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:04:26,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654815770] [2021-03-11 16:04:26,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:04:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:04:26,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:26,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:04:26,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:26,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:26,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:26,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:26,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:26,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:26,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:26,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:26,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:26,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:26,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:26,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:26,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:26,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:26,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:26,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:26,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:26,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:26,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:26,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:26,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:26,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:26,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:26,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:26,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:26,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:26,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:26,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:26,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:26,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:26,417 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:04:26,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:04:26,448 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:04:26,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:26,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:04:26,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654815770] [2021-03-11 16:04:26,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:04:26,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:04:26,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909997251] [2021-03-11 16:04:26,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:04:26,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:04:26,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:04:26,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:04:26,464 INFO L87 Difference]: Start difference. First operand 1302 states and 4040 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:28,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:04:28,412 INFO L93 Difference]: Finished difference Result 1512 states and 4665 transitions. [2021-03-11 16:04:28,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 16:04:28,413 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:04:28,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:04:28,415 INFO L225 Difference]: With dead ends: 1512 [2021-03-11 16:04:28,415 INFO L226 Difference]: Without dead ends: 1475 [2021-03-11 16:04:28,416 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 1019.2ms TimeCoverageRelationStatistics Valid=173, Invalid=1549, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 16:04:28,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2021-03-11 16:04:28,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1298. [2021-03-11 16:04:28,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 1297 states have (on average 3.104857363145721) internal successors, (4027), 1297 states have internal predecessors, (4027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:28,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 4027 transitions. [2021-03-11 16:04:28,429 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 4027 transitions. Word has length 34 [2021-03-11 16:04:28,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:04:28,429 INFO L480 AbstractCegarLoop]: Abstraction has 1298 states and 4027 transitions. [2021-03-11 16:04:28,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:28,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 4027 transitions. [2021-03-11 16:04:28,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:04:28,431 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:04:28,431 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:04:28,431 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-03-11 16:04:28,431 INFO L428 AbstractCegarLoop]: === Iteration 109 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:04:28,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:04:28,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1818788262, now seen corresponding path program 109 times [2021-03-11 16:04:28,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:04:28,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033451018] [2021-03-11 16:04:28,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:04:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:04:28,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:28,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:04:28,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:28,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:28,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:28,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:28,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:28,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:28,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:28,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:28,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:28,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:28,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:28,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:28,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:28,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:28,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:28,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:28,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:28,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:28,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:28,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:28,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:28,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:28,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:28,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:28,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:28,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:28,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:28,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:28,680 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:04:28,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:04:28,691 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:04:28,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:04:28,721 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:04:28,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:28,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:04:28,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033451018] [2021-03-11 16:04:28,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:04:28,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 16:04:28,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368497475] [2021-03-11 16:04:28,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 16:04:28,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:04:28,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 16:04:28,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-03-11 16:04:28,725 INFO L87 Difference]: Start difference. First operand 1298 states and 4027 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:30,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:04:30,647 INFO L93 Difference]: Finished difference Result 1536 states and 4733 transitions. [2021-03-11 16:04:30,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-11 16:04:30,648 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:04:30,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:04:30,650 INFO L225 Difference]: With dead ends: 1536 [2021-03-11 16:04:30,650 INFO L226 Difference]: Without dead ends: 1507 [2021-03-11 16:04:30,651 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 933.4ms TimeCoverageRelationStatistics Valid=157, Invalid=1325, Unknown=0, NotChecked=0, Total=1482 [2021-03-11 16:04:30,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2021-03-11 16:04:30,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1316. [2021-03-11 16:04:30,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 1315 states have (on average 3.106463878326996) internal successors, (4085), 1315 states have internal predecessors, (4085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:30,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 4085 transitions. [2021-03-11 16:04:30,665 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 4085 transitions. Word has length 34 [2021-03-11 16:04:30,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:04:30,665 INFO L480 AbstractCegarLoop]: Abstraction has 1316 states and 4085 transitions. [2021-03-11 16:04:30,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:30,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 4085 transitions. [2021-03-11 16:04:30,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:04:30,667 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:04:30,667 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:04:30,667 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-03-11 16:04:30,667 INFO L428 AbstractCegarLoop]: === Iteration 110 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:04:30,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:04:30,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1590380754, now seen corresponding path program 110 times [2021-03-11 16:04:30,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:04:30,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166793232] [2021-03-11 16:04:30,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:04:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:04:30,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:30,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:04:30,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:30,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:30,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:30,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:30,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:30,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:30,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:30,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:30,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:30,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:30,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:30,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:30,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:30,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:30,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:30,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:30,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:30,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:30,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:30,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:30,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:30,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:30,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:30,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:30,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:30,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:30,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:30,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:30,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:30,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:30,961 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:04:30,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:04:30,994 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:04:30,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:04:30,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166793232] [2021-03-11 16:04:30,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:04:30,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:04:30,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834137945] [2021-03-11 16:04:30,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:04:30,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:04:30,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:04:30,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:04:30,999 INFO L87 Difference]: Start difference. First operand 1316 states and 4085 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:33,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:04:33,219 INFO L93 Difference]: Finished difference Result 1588 states and 4857 transitions. [2021-03-11 16:04:33,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-11 16:04:33,220 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:04:33,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:04:33,223 INFO L225 Difference]: With dead ends: 1588 [2021-03-11 16:04:33,223 INFO L226 Difference]: Without dead ends: 1563 [2021-03-11 16:04:33,224 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 1102.1ms TimeCoverageRelationStatistics Valid=181, Invalid=1625, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 16:04:33,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2021-03-11 16:04:33,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1300. [2021-03-11 16:04:33,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1299 states have (on average 3.1046959199384143) internal successors, (4033), 1299 states have internal predecessors, (4033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:33,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 4033 transitions. [2021-03-11 16:04:33,237 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 4033 transitions. Word has length 34 [2021-03-11 16:04:33,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:04:33,238 INFO L480 AbstractCegarLoop]: Abstraction has 1300 states and 4033 transitions. [2021-03-11 16:04:33,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:33,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 4033 transitions. [2021-03-11 16:04:33,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:04:33,239 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:04:33,239 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:04:33,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-03-11 16:04:33,239 INFO L428 AbstractCegarLoop]: === Iteration 111 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:04:33,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:04:33,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1151412656, now seen corresponding path program 111 times [2021-03-11 16:04:33,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:04:33,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642165787] [2021-03-11 16:04:33,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:04:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:04:33,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:33,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:04:33,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:33,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:33,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:33,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:33,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:33,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:33,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:33,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:33,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:33,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:33,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:33,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:33,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:33,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:33,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:33,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:33,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:33,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:33,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:33,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:33,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:33,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:33,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:33,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:33,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:33,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:33,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:33,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:33,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:33,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:33,588 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:04:33,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:04:33,621 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:04:33,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:33,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:04:33,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642165787] [2021-03-11 16:04:33,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:04:33,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:04:33,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116455137] [2021-03-11 16:04:33,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:04:33,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:04:33,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:04:33,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:04:33,625 INFO L87 Difference]: Start difference. First operand 1300 states and 4033 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:35,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:04:35,747 INFO L93 Difference]: Finished difference Result 1578 states and 4819 transitions. [2021-03-11 16:04:35,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 16:04:35,748 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:04:35,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:04:35,750 INFO L225 Difference]: With dead ends: 1578 [2021-03-11 16:04:35,751 INFO L226 Difference]: Without dead ends: 1505 [2021-03-11 16:04:35,751 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 1118.3ms TimeCoverageRelationStatistics Valid=172, Invalid=1634, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 16:04:35,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2021-03-11 16:04:35,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1299. [2021-03-11 16:04:35,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 1298 states have (on average 3.105546995377504) internal successors, (4031), 1298 states have internal predecessors, (4031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:35,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 4031 transitions. [2021-03-11 16:04:35,765 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 4031 transitions. Word has length 34 [2021-03-11 16:04:35,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:04:35,765 INFO L480 AbstractCegarLoop]: Abstraction has 1299 states and 4031 transitions. [2021-03-11 16:04:35,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:35,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 4031 transitions. [2021-03-11 16:04:35,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:04:35,767 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:04:35,767 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:04:35,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-03-11 16:04:35,767 INFO L428 AbstractCegarLoop]: === Iteration 112 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:04:35,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:04:35,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1016469148, now seen corresponding path program 112 times [2021-03-11 16:04:35,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:04:35,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814536275] [2021-03-11 16:04:35,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:04:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:04:35,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:35,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:04:35,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:35,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:35,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:35,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:35,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:35,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:35,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:35,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:35,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:35,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:35,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:35,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:35,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:35,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:35,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:35,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:35,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:35,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:35,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:35,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:35,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:35,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:35,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:35,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:35,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:35,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:36,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:36,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:36,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:36,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:36,087 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:04:36,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:04:36,122 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:04:36,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:36,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:04:36,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814536275] [2021-03-11 16:04:36,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:04:36,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:04:36,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778963454] [2021-03-11 16:04:36,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:04:36,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:04:36,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:04:36,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:04:36,127 INFO L87 Difference]: Start difference. First operand 1299 states and 4031 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:38,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:04:38,962 INFO L93 Difference]: Finished difference Result 1547 states and 4758 transitions. [2021-03-11 16:04:38,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-03-11 16:04:38,963 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:04:38,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:04:38,966 INFO L225 Difference]: With dead ends: 1547 [2021-03-11 16:04:38,966 INFO L226 Difference]: Without dead ends: 1522 [2021-03-11 16:04:38,966 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 1483.1ms TimeCoverageRelationStatistics Valid=261, Invalid=2601, Unknown=0, NotChecked=0, Total=2862 [2021-03-11 16:04:38,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2021-03-11 16:04:38,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1300. [2021-03-11 16:04:38,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1299 states have (on average 3.105465742879138) internal successors, (4034), 1299 states have internal predecessors, (4034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:38,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 4034 transitions. [2021-03-11 16:04:38,980 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 4034 transitions. Word has length 34 [2021-03-11 16:04:38,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:04:38,980 INFO L480 AbstractCegarLoop]: Abstraction has 1300 states and 4034 transitions. [2021-03-11 16:04:38,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:38,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 4034 transitions. [2021-03-11 16:04:38,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:04:38,982 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:04:38,982 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:04:38,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-03-11 16:04:38,982 INFO L428 AbstractCegarLoop]: === Iteration 113 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:04:38,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:04:38,982 INFO L82 PathProgramCache]: Analyzing trace with hash 536704738, now seen corresponding path program 113 times [2021-03-11 16:04:38,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:04:38,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284654922] [2021-03-11 16:04:38,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:04:38,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:04:38,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:38,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:04:39,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:39,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:39,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:39,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:39,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:39,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:39,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:39,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:39,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:39,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:39,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:39,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:39,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:39,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:39,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:39,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:39,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:39,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:39,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:39,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:39,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:39,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:39,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:39,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:39,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:39,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:39,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:39,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:39,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:39,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:39,331 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:04:39,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:04:39,366 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:04:39,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:39,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:04:39,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284654922] [2021-03-11 16:04:39,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:04:39,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:04:39,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285316727] [2021-03-11 16:04:39,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:04:39,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:04:39,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:04:39,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:04:39,371 INFO L87 Difference]: Start difference. First operand 1300 states and 4034 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:41,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:04:41,850 INFO L93 Difference]: Finished difference Result 1532 states and 4703 transitions. [2021-03-11 16:04:41,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-11 16:04:41,851 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:04:41,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:04:41,853 INFO L225 Difference]: With dead ends: 1532 [2021-03-11 16:04:41,853 INFO L226 Difference]: Without dead ends: 1491 [2021-03-11 16:04:41,854 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 1371.4ms TimeCoverageRelationStatistics Valid=218, Invalid=2134, Unknown=0, NotChecked=0, Total=2352 [2021-03-11 16:04:41,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2021-03-11 16:04:41,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1305. [2021-03-11 16:04:41,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1305 states, 1304 states have (on average 3.101993865030675) internal successors, (4045), 1304 states have internal predecessors, (4045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:41,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 4045 transitions. [2021-03-11 16:04:41,868 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 4045 transitions. Word has length 34 [2021-03-11 16:04:41,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:04:41,868 INFO L480 AbstractCegarLoop]: Abstraction has 1305 states and 4045 transitions. [2021-03-11 16:04:41,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:41,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 4045 transitions. [2021-03-11 16:04:41,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:04:41,869 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:04:41,869 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:04:41,869 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-03-11 16:04:41,869 INFO L428 AbstractCegarLoop]: === Iteration 114 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:04:41,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:04:41,869 INFO L82 PathProgramCache]: Analyzing trace with hash -890108586, now seen corresponding path program 114 times [2021-03-11 16:04:41,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:04:41,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608028306] [2021-03-11 16:04:41,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:04:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:04:41,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:41,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:04:41,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:41,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:41,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:41,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:41,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:41,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:41,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:41,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:41,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:41,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:41,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:41,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:41,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:41,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:41,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:41,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:42,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:42,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:42,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:42,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:42,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:42,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:42,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:42,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:42,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:42,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:42,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:42,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:42,188 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:04:42,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:04:42,222 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:04:42,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:04:42,261 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:04:42,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:42,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:04:42,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608028306] [2021-03-11 16:04:42,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:04:42,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:04:42,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705019212] [2021-03-11 16:04:42,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:04:42,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:04:42,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:04:42,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:04:42,265 INFO L87 Difference]: Start difference. First operand 1305 states and 4045 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:44,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:04:44,988 INFO L93 Difference]: Finished difference Result 1533 states and 4701 transitions. [2021-03-11 16:04:44,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-11 16:04:44,990 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:04:44,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:04:44,992 INFO L225 Difference]: With dead ends: 1533 [2021-03-11 16:04:44,992 INFO L226 Difference]: Without dead ends: 1492 [2021-03-11 16:04:44,993 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 1350.7ms TimeCoverageRelationStatistics Valid=214, Invalid=2042, Unknown=0, NotChecked=0, Total=2256 [2021-03-11 16:04:44,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-03-11 16:04:45,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1301. [2021-03-11 16:04:45,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 1300 states have (on average 3.103846153846154) internal successors, (4035), 1300 states have internal predecessors, (4035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:45,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 4035 transitions. [2021-03-11 16:04:45,007 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 4035 transitions. Word has length 34 [2021-03-11 16:04:45,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:04:45,007 INFO L480 AbstractCegarLoop]: Abstraction has 1301 states and 4035 transitions. [2021-03-11 16:04:45,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:45,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 4035 transitions. [2021-03-11 16:04:45,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:04:45,008 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:04:45,008 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:04:45,008 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-03-11 16:04:45,008 INFO L428 AbstractCegarLoop]: === Iteration 115 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:04:45,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:04:45,009 INFO L82 PathProgramCache]: Analyzing trace with hash 763997206, now seen corresponding path program 115 times [2021-03-11 16:04:45,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:04:45,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122850248] [2021-03-11 16:04:45,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:04:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:04:45,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:45,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:04:45,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:45,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:45,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:45,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:45,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:45,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:45,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:45,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:45,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:45,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:45,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:45,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:45,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:45,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:45,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:45,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:45,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:45,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:45,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:45,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:45,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:45,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:45,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:45,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:45,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:45,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:45,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:45,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:45,349 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:04:45,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:04:45,383 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:04:45,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:04:45,419 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:04:45,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:45,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:04:45,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122850248] [2021-03-11 16:04:45,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:04:45,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:04:45,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582319421] [2021-03-11 16:04:45,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:04:45,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:04:45,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:04:45,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:04:45,424 INFO L87 Difference]: Start difference. First operand 1301 states and 4035 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:49,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:04:49,748 INFO L93 Difference]: Finished difference Result 1808 states and 5602 transitions. [2021-03-11 16:04:49,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-11 16:04:49,749 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:04:49,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:04:49,752 INFO L225 Difference]: With dead ends: 1808 [2021-03-11 16:04:49,752 INFO L226 Difference]: Without dead ends: 1779 [2021-03-11 16:04:49,753 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1135 ImplicationChecksByTransitivity, 2098.9ms TimeCoverageRelationStatistics Valid=379, Invalid=3911, Unknown=0, NotChecked=0, Total=4290 [2021-03-11 16:04:49,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1779 states. [2021-03-11 16:04:49,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1779 to 1310. [2021-03-11 16:04:49,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1309 states have (on average 3.1023682200152787) internal successors, (4061), 1309 states have internal predecessors, (4061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:49,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 4061 transitions. [2021-03-11 16:04:49,768 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 4061 transitions. Word has length 34 [2021-03-11 16:04:49,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:04:49,768 INFO L480 AbstractCegarLoop]: Abstraction has 1310 states and 4061 transitions. [2021-03-11 16:04:49,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:49,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 4061 transitions. [2021-03-11 16:04:49,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:04:49,770 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:04:49,770 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:04:49,770 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-03-11 16:04:49,770 INFO L428 AbstractCegarLoop]: === Iteration 116 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:04:49,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:04:49,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1056838188, now seen corresponding path program 116 times [2021-03-11 16:04:49,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:04:49,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384447111] [2021-03-11 16:04:49,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:04:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:04:49,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:49,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:04:49,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:49,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:49,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:49,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:49,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:49,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:49,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:49,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:49,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:49,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:49,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:49,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:49,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:49,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:49,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:49,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:49,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:49,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:49,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:49,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:49,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:49,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:49,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:49,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:50,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:50,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:50,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:50,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:50,097 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:04:50,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:04:50,136 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:04:50,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:04:50,177 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:04:50,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:50,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:04:50,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384447111] [2021-03-11 16:04:50,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:04:50,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:04:50,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879953348] [2021-03-11 16:04:50,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:04:50,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:04:50,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:04:50,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:04:50,183 INFO L87 Difference]: Start difference. First operand 1310 states and 4061 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:53,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:04:53,975 INFO L93 Difference]: Finished difference Result 1700 states and 5211 transitions. [2021-03-11 16:04:53,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-03-11 16:04:53,976 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:04:53,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:04:53,979 INFO L225 Difference]: With dead ends: 1700 [2021-03-11 16:04:53,979 INFO L226 Difference]: Without dead ends: 1673 [2021-03-11 16:04:53,979 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 1797.2ms TimeCoverageRelationStatistics Valid=293, Invalid=2899, Unknown=0, NotChecked=0, Total=3192 [2021-03-11 16:04:53,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2021-03-11 16:04:53,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1306. [2021-03-11 16:04:53,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1305 states have (on average 3.104214559386973) internal successors, (4051), 1305 states have internal predecessors, (4051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:53,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 4051 transitions. [2021-03-11 16:04:53,994 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 4051 transitions. Word has length 34 [2021-03-11 16:04:53,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:04:53,994 INFO L480 AbstractCegarLoop]: Abstraction has 1306 states and 4051 transitions. [2021-03-11 16:04:53,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:53,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 4051 transitions. [2021-03-11 16:04:53,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:04:53,996 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:04:53,996 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:04:53,996 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-03-11 16:04:53,996 INFO L428 AbstractCegarLoop]: === Iteration 117 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:04:53,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:04:53,996 INFO L82 PathProgramCache]: Analyzing trace with hash 768376566, now seen corresponding path program 117 times [2021-03-11 16:04:53,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:04:53,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129031192] [2021-03-11 16:04:53,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:04:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:04:54,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:54,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:04:54,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:54,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:54,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:54,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:54,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:54,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:54,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:54,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:54,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:54,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:54,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:54,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:54,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:54,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:54,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:54,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:54,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:54,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:54,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:54,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:54,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:54,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:54,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:54,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:54,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:54,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:54,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:54,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:54,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:54,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:54,360 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:04:54,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:04:54,398 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:04:54,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:54,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:04:54,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129031192] [2021-03-11 16:04:54,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:04:54,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:04:54,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845380482] [2021-03-11 16:04:54,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:04:54,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:04:54,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:04:54,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:04:54,403 INFO L87 Difference]: Start difference. First operand 1306 states and 4051 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:56,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:04:56,783 INFO L93 Difference]: Finished difference Result 1551 states and 4743 transitions. [2021-03-11 16:04:56,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-11 16:04:56,784 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:04:56,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:04:56,787 INFO L225 Difference]: With dead ends: 1551 [2021-03-11 16:04:56,787 INFO L226 Difference]: Without dead ends: 1525 [2021-03-11 16:04:56,787 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 1259.4ms TimeCoverageRelationStatistics Valid=188, Invalid=1792, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 16:04:56,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2021-03-11 16:04:56,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 1310. [2021-03-11 16:04:56,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1309 states have (on average 3.1000763941940415) internal successors, (4058), 1309 states have internal predecessors, (4058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:56,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 4058 transitions. [2021-03-11 16:04:56,801 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 4058 transitions. Word has length 34 [2021-03-11 16:04:56,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:04:56,801 INFO L480 AbstractCegarLoop]: Abstraction has 1310 states and 4058 transitions. [2021-03-11 16:04:56,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:04:56,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 4058 transitions. [2021-03-11 16:04:56,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:04:56,803 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:04:56,803 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:04:56,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-03-11 16:04:56,803 INFO L428 AbstractCegarLoop]: === Iteration 118 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:04:56,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:04:56,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1862468154, now seen corresponding path program 118 times [2021-03-11 16:04:56,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:04:56,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332083105] [2021-03-11 16:04:56,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:04:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:04:56,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:56,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:04:56,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:56,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:56,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:56,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:04:56,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:56,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:56,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:56,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:56,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:56,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:56,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:56,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:04:56,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:56,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:56,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:56,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:56,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:56,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:56,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:56,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:56,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:56,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:57,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:57,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:57,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:57,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:57,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:57,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:57,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:04:57,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:04:57,163 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:04:57,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:04:57,202 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:04:57,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:04:57,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:04:57,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332083105] [2021-03-11 16:04:57,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:04:57,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:04:57,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544768499] [2021-03-11 16:04:57,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:04:57,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:04:57,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:04:57,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:04:57,207 INFO L87 Difference]: Start difference. First operand 1310 states and 4058 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:00,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:05:00,013 INFO L93 Difference]: Finished difference Result 1578 states and 4795 transitions. [2021-03-11 16:05:00,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-11 16:05:00,015 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:05:00,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:05:00,017 INFO L225 Difference]: With dead ends: 1578 [2021-03-11 16:05:00,017 INFO L226 Difference]: Without dead ends: 1546 [2021-03-11 16:05:00,018 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 1461.0ms TimeCoverageRelationStatistics Valid=217, Invalid=2135, Unknown=0, NotChecked=0, Total=2352 [2021-03-11 16:05:00,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2021-03-11 16:05:00,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1309. [2021-03-11 16:05:00,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 1308 states have (on average 3.1009174311926606) internal successors, (4056), 1308 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:00,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 4056 transitions. [2021-03-11 16:05:00,032 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 4056 transitions. Word has length 34 [2021-03-11 16:05:00,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:05:00,032 INFO L480 AbstractCegarLoop]: Abstraction has 1309 states and 4056 transitions. [2021-03-11 16:05:00,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:00,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 4056 transitions. [2021-03-11 16:05:00,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:05:00,034 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:05:00,034 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:05:00,034 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-03-11 16:05:00,034 INFO L428 AbstractCegarLoop]: === Iteration 119 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:05:00,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:05:00,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1834167802, now seen corresponding path program 119 times [2021-03-11 16:05:00,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:05:00,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310458416] [2021-03-11 16:05:00,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:05:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:05:00,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:00,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:05:00,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:00,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:05:00,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:00,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:05:00,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:00,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:00,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:00,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:00,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:00,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:05:00,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:00,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:05:00,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:00,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:00,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:00,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:00,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:00,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:00,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:00,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:00,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:00,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:00,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:00,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:00,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:00,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:00,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:00,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:00,384 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:05:00,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:05:00,421 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:05:00,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:05:00,472 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:05:00,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:00,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:05:00,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310458416] [2021-03-11 16:05:00,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:05:00,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:05:00,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480152168] [2021-03-11 16:05:00,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:05:00,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:05:00,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:05:00,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:05:00,477 INFO L87 Difference]: Start difference. First operand 1309 states and 4056 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:04,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:05:04,179 INFO L93 Difference]: Finished difference Result 1529 states and 4686 transitions. [2021-03-11 16:05:04,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-11 16:05:04,182 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:05:04,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:05:04,185 INFO L225 Difference]: With dead ends: 1529 [2021-03-11 16:05:04,185 INFO L226 Difference]: Without dead ends: 1492 [2021-03-11 16:05:04,185 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 1678.3ms TimeCoverageRelationStatistics Valid=204, Invalid=1958, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 16:05:04,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-03-11 16:05:04,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1311. [2021-03-11 16:05:04,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1311 states, 1310 states have (on average 3.099236641221374) internal successors, (4060), 1310 states have internal predecessors, (4060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:04,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 4060 transitions. [2021-03-11 16:05:04,200 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 4060 transitions. Word has length 34 [2021-03-11 16:05:04,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:05:04,200 INFO L480 AbstractCegarLoop]: Abstraction has 1311 states and 4060 transitions. [2021-03-11 16:05:04,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:04,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 4060 transitions. [2021-03-11 16:05:04,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:05:04,202 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:05:04,202 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:05:04,202 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-03-11 16:05:04,202 INFO L428 AbstractCegarLoop]: === Iteration 120 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:05:04,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:05:04,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1343449660, now seen corresponding path program 120 times [2021-03-11 16:05:04,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:05:04,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580913688] [2021-03-11 16:05:04,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:05:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:05:04,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:04,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:05:04,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:04,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:05:04,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:04,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:05:04,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:04,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:04,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:04,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:04,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:04,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:05:04,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:04,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:05:04,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:04,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:04,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:04,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:04,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:04,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:04,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:04,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:04,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:04,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:04,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:04,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:04,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:04,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:04,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:04,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:04,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:04,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:04,641 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:05:04,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:05:04,689 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:05:04,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:04,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:05:04,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580913688] [2021-03-11 16:05:04,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:05:04,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:05:04,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365357923] [2021-03-11 16:05:04,694 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:05:04,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:05:04,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:05:04,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:05:04,695 INFO L87 Difference]: Start difference. First operand 1311 states and 4060 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:07,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:05:07,494 INFO L93 Difference]: Finished difference Result 1497 states and 4591 transitions. [2021-03-11 16:05:07,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-11 16:05:07,496 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:05:07,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:05:07,498 INFO L225 Difference]: With dead ends: 1497 [2021-03-11 16:05:07,498 INFO L226 Difference]: Without dead ends: 1471 [2021-03-11 16:05:07,498 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1457.6ms TimeCoverageRelationStatistics Valid=174, Invalid=1632, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 16:05:07,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2021-03-11 16:05:07,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1313. [2021-03-11 16:05:07,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1312 states have (on average 3.097560975609756) internal successors, (4064), 1312 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:07,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 4064 transitions. [2021-03-11 16:05:07,512 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 4064 transitions. Word has length 34 [2021-03-11 16:05:07,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:05:07,513 INFO L480 AbstractCegarLoop]: Abstraction has 1313 states and 4064 transitions. [2021-03-11 16:05:07,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:07,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 4064 transitions. [2021-03-11 16:05:07,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:05:07,514 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:05:07,514 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:05:07,514 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-03-11 16:05:07,514 INFO L428 AbstractCegarLoop]: === Iteration 121 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:05:07,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:05:07,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1878432256, now seen corresponding path program 121 times [2021-03-11 16:05:07,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:05:07,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673395870] [2021-03-11 16:05:07,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:05:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:05:07,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:07,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:05:07,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:07,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:05:07,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:07,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:05:07,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:07,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:07,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:07,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:07,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:07,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:05:07,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:07,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:05:07,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:07,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:07,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:07,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:07,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:07,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:07,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:07,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:07,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:07,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:07,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:07,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:07,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:07,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:07,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:07,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:07,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:07,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:08,029 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:05:08,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:05:08,074 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:05:08,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:08,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:05:08,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673395870] [2021-03-11 16:05:08,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:05:08,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:05:08,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285080920] [2021-03-11 16:05:08,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:05:08,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:05:08,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:05:08,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:05:08,080 INFO L87 Difference]: Start difference. First operand 1313 states and 4064 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:11,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:05:11,092 INFO L93 Difference]: Finished difference Result 1505 states and 4607 transitions. [2021-03-11 16:05:11,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-11 16:05:11,094 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:05:11,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:05:11,097 INFO L225 Difference]: With dead ends: 1505 [2021-03-11 16:05:11,097 INFO L226 Difference]: Without dead ends: 1471 [2021-03-11 16:05:11,097 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 1604.8ms TimeCoverageRelationStatistics Valid=186, Invalid=1794, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 16:05:11,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2021-03-11 16:05:11,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1308. [2021-03-11 16:05:11,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1308 states, 1307 states have (on average 3.101759755164499) internal successors, (4054), 1307 states have internal predecessors, (4054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:11,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 4054 transitions. [2021-03-11 16:05:11,112 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 4054 transitions. Word has length 34 [2021-03-11 16:05:11,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:05:11,112 INFO L480 AbstractCegarLoop]: Abstraction has 1308 states and 4054 transitions. [2021-03-11 16:05:11,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:11,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 4054 transitions. [2021-03-11 16:05:11,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:05:11,114 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:05:11,114 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:05:11,114 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-03-11 16:05:11,114 INFO L428 AbstractCegarLoop]: === Iteration 122 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:05:11,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:05:11,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1836061160, now seen corresponding path program 122 times [2021-03-11 16:05:11,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:05:11,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107959488] [2021-03-11 16:05:11,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:05:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:05:11,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:11,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:05:11,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:11,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:05:11,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:11,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:05:11,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:11,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:11,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:11,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:11,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:11,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:05:11,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:11,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:05:11,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:11,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:11,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:11,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:11,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:11,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:11,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:11,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:11,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:11,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:11,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:11,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:11,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:11,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:11,453 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:05:11,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:05:11,493 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:05:11,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:05:11,515 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:05:11,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:05:11,562 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:05:11,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:11,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:05:11,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107959488] [2021-03-11 16:05:11,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:05:11,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:05:11,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427049417] [2021-03-11 16:05:11,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:05:11,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:05:11,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:05:11,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:05:11,568 INFO L87 Difference]: Start difference. First operand 1308 states and 4054 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:17,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:05:17,602 INFO L93 Difference]: Finished difference Result 1900 states and 5915 transitions. [2021-03-11 16:05:17,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-03-11 16:05:17,603 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:05:17,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:05:17,606 INFO L225 Difference]: With dead ends: 1900 [2021-03-11 16:05:17,606 INFO L226 Difference]: Without dead ends: 1871 [2021-03-11 16:05:17,607 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 2737.9ms TimeCoverageRelationStatistics Valid=343, Invalid=3317, Unknown=0, NotChecked=0, Total=3660 [2021-03-11 16:05:17,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1871 states. [2021-03-11 16:05:17,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1871 to 1321. [2021-03-11 16:05:17,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 1320 states have (on average 3.1) internal successors, (4092), 1320 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:17,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 4092 transitions. [2021-03-11 16:05:17,623 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 4092 transitions. Word has length 34 [2021-03-11 16:05:17,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:05:17,623 INFO L480 AbstractCegarLoop]: Abstraction has 1321 states and 4092 transitions. [2021-03-11 16:05:17,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:17,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 4092 transitions. [2021-03-11 16:05:17,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:05:17,624 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:05:17,624 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:05:17,624 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-03-11 16:05:17,624 INFO L428 AbstractCegarLoop]: === Iteration 123 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:05:17,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:05:17,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1393162020, now seen corresponding path program 123 times [2021-03-11 16:05:17,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:05:17,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481585804] [2021-03-11 16:05:17,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:05:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:05:17,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:17,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:05:17,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:17,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:05:17,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:17,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:05:17,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:17,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:17,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:17,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:17,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:17,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:05:17,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:17,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:05:17,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:17,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:17,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:17,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:17,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:17,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:17,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:17,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:17,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:17,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:17,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:17,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:17,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:17,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:17,915 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:05:17,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:05:17,953 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:05:17,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:05:18,019 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:05:18,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:05:18,075 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:05:18,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:18,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:05:18,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481585804] [2021-03-11 16:05:18,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:05:18,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:05:18,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020280367] [2021-03-11 16:05:18,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:05:18,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:05:18,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:05:18,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:05:18,082 INFO L87 Difference]: Start difference. First operand 1321 states and 4092 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:24,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:05:24,677 INFO L93 Difference]: Finished difference Result 2038 states and 6325 transitions. [2021-03-11 16:05:24,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-11 16:05:24,679 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:05:24,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:05:24,683 INFO L225 Difference]: With dead ends: 2038 [2021-03-11 16:05:24,683 INFO L226 Difference]: Without dead ends: 2013 [2021-03-11 16:05:24,684 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 3092.6ms TimeCoverageRelationStatistics Valid=414, Invalid=4008, Unknown=0, NotChecked=0, Total=4422 [2021-03-11 16:05:24,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2021-03-11 16:05:24,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1321. [2021-03-11 16:05:24,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 1320 states have (on average 3.1) internal successors, (4092), 1320 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:24,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 4092 transitions. [2021-03-11 16:05:24,702 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 4092 transitions. Word has length 34 [2021-03-11 16:05:24,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:05:24,702 INFO L480 AbstractCegarLoop]: Abstraction has 1321 states and 4092 transitions. [2021-03-11 16:05:24,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:24,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 4092 transitions. [2021-03-11 16:05:24,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:05:24,704 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:05:24,704 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:05:24,704 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-03-11 16:05:24,704 INFO L428 AbstractCegarLoop]: === Iteration 124 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:05:24,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:05:24,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1686003002, now seen corresponding path program 124 times [2021-03-11 16:05:24,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:05:24,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260898333] [2021-03-11 16:05:24,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:05:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:05:24,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:24,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:05:24,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:24,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:05:24,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:24,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:05:24,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:24,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:24,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:24,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:24,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:24,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:05:24,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:24,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:05:24,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:24,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:24,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:24,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:24,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:24,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:24,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:24,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:24,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:24,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:24,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:24,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:25,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:25,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:25,057 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:05:25,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:05:25,099 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:05:25,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:05:25,153 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:05:25,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:05:25,201 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:05:25,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:25,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:05:25,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260898333] [2021-03-11 16:05:25,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:05:25,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:05:25,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21321700] [2021-03-11 16:05:25,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:05:25,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:05:25,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:05:25,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:05:25,207 INFO L87 Difference]: Start difference. First operand 1321 states and 4092 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:31,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:05:31,713 INFO L93 Difference]: Finished difference Result 1998 states and 6212 transitions. [2021-03-11 16:05:31,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-11 16:05:31,715 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:05:31,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:05:31,719 INFO L225 Difference]: With dead ends: 1998 [2021-03-11 16:05:31,719 INFO L226 Difference]: Without dead ends: 1970 [2021-03-11 16:05:31,720 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 2955.4ms TimeCoverageRelationStatistics Valid=386, Invalid=3774, Unknown=0, NotChecked=0, Total=4160 [2021-03-11 16:05:31,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2021-03-11 16:05:31,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1308. [2021-03-11 16:05:31,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1308 states, 1307 states have (on average 3.1009946442234124) internal successors, (4053), 1307 states have internal predecessors, (4053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:31,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 4053 transitions. [2021-03-11 16:05:31,746 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 4053 transitions. Word has length 34 [2021-03-11 16:05:31,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:05:31,746 INFO L480 AbstractCegarLoop]: Abstraction has 1308 states and 4053 transitions. [2021-03-11 16:05:31,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:31,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 4053 transitions. [2021-03-11 16:05:31,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:05:31,748 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:05:31,748 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:05:31,748 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-03-11 16:05:31,748 INFO L428 AbstractCegarLoop]: === Iteration 125 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:05:31,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:05:31,749 INFO L82 PathProgramCache]: Analyzing trace with hash -296780884, now seen corresponding path program 125 times [2021-03-11 16:05:31,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:05:31,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728498194] [2021-03-11 16:05:31,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:05:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:05:31,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:31,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:05:31,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:31,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:05:31,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:31,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:05:31,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:31,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:31,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:31,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:31,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:31,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:05:31,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:31,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:05:31,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:31,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:31,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:31,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:32,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:32,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:32,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:32,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:32,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:32,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:32,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:32,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:32,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:32,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:32,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:32,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:32,322 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:05:32,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:05:32,380 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:05:32,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:05:32,441 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:05:32,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:32,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:05:32,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728498194] [2021-03-11 16:05:32,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:05:32,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:05:32,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241090553] [2021-03-11 16:05:32,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:05:32,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:05:32,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:05:32,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:05:32,448 INFO L87 Difference]: Start difference. First operand 1308 states and 4053 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:39,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:05:39,090 INFO L93 Difference]: Finished difference Result 1971 states and 6084 transitions. [2021-03-11 16:05:39,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-11 16:05:39,092 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:05:39,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:05:39,095 INFO L225 Difference]: With dead ends: 1971 [2021-03-11 16:05:39,095 INFO L226 Difference]: Without dead ends: 1946 [2021-03-11 16:05:39,096 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 953 ImplicationChecksByTransitivity, 3016.9ms TimeCoverageRelationStatistics Valid=339, Invalid=3443, Unknown=0, NotChecked=0, Total=3782 [2021-03-11 16:05:39,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1946 states. [2021-03-11 16:05:39,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1946 to 1306. [2021-03-11 16:05:39,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1305 states have (on average 3.099616858237548) internal successors, (4045), 1305 states have internal predecessors, (4045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:39,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 4045 transitions. [2021-03-11 16:05:39,120 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 4045 transitions. Word has length 34 [2021-03-11 16:05:39,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:05:39,120 INFO L480 AbstractCegarLoop]: Abstraction has 1306 states and 4045 transitions. [2021-03-11 16:05:39,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:39,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 4045 transitions. [2021-03-11 16:05:39,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:05:39,122 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:05:39,122 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:05:39,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-03-11 16:05:39,122 INFO L428 AbstractCegarLoop]: === Iteration 126 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:05:39,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:05:39,123 INFO L82 PathProgramCache]: Analyzing trace with hash -3939902, now seen corresponding path program 126 times [2021-03-11 16:05:39,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:05:39,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65519284] [2021-03-11 16:05:39,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:05:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:05:39,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:39,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:05:39,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:39,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:05:39,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:39,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:05:39,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:39,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:39,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:39,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:39,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:39,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:05:39,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:39,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:05:39,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:39,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:39,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:39,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:39,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:39,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:39,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:39,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:39,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:39,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:39,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:39,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:39,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:39,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:39,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:39,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:39,538 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:05:39,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:05:39,590 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:05:39,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:05:39,643 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:05:39,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:39,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:05:39,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65519284] [2021-03-11 16:05:39,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:05:39,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:05:39,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166463242] [2021-03-11 16:05:39,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:05:39,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:05:39,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:05:39,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:05:39,650 INFO L87 Difference]: Start difference. First operand 1306 states and 4045 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:44,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:05:44,750 INFO L93 Difference]: Finished difference Result 1705 states and 5174 transitions. [2021-03-11 16:05:44,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-11 16:05:44,752 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:05:44,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:05:44,755 INFO L225 Difference]: With dead ends: 1705 [2021-03-11 16:05:44,755 INFO L226 Difference]: Without dead ends: 1678 [2021-03-11 16:05:44,756 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 2301.6ms TimeCoverageRelationStatistics Valid=230, Invalid=2220, Unknown=0, NotChecked=0, Total=2450 [2021-03-11 16:05:44,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2021-03-11 16:05:44,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1303. [2021-03-11 16:05:44,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1303 states, 1302 states have (on average 3.099846390168971) internal successors, (4036), 1302 states have internal predecessors, (4036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:44,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 4036 transitions. [2021-03-11 16:05:44,773 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 4036 transitions. Word has length 34 [2021-03-11 16:05:44,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:05:44,773 INFO L480 AbstractCegarLoop]: Abstraction has 1303 states and 4036 transitions. [2021-03-11 16:05:44,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:44,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 4036 transitions. [2021-03-11 16:05:44,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:05:44,775 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:05:44,775 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:05:44,775 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-03-11 16:05:44,775 INFO L428 AbstractCegarLoop]: === Iteration 127 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:05:44,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:05:44,775 INFO L82 PathProgramCache]: Analyzing trace with hash -292401524, now seen corresponding path program 127 times [2021-03-11 16:05:44,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:05:44,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375425837] [2021-03-11 16:05:44,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:05:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:05:44,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:44,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:05:44,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:44,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:05:44,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:44,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:05:44,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:44,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:44,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:44,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:44,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:44,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:05:44,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:44,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:05:44,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:44,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:44,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:44,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:44,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:44,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:45,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:45,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:45,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:45,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:45,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:45,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:45,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:45,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:45,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:45,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:45,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:45,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:45,339 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:05:45,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:05:45,396 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:05:45,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:45,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:05:45,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375425837] [2021-03-11 16:05:45,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:05:45,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:05:45,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167435260] [2021-03-11 16:05:45,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:05:45,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:05:45,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:05:45,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:05:45,403 INFO L87 Difference]: Start difference. First operand 1303 states and 4036 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:49,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:05:49,009 INFO L93 Difference]: Finished difference Result 1553 states and 4719 transitions. [2021-03-11 16:05:49,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-11 16:05:49,012 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:05:49,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:05:49,014 INFO L225 Difference]: With dead ends: 1553 [2021-03-11 16:05:49,014 INFO L226 Difference]: Without dead ends: 1518 [2021-03-11 16:05:49,015 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 1790.7ms TimeCoverageRelationStatistics Valid=170, Invalid=1636, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 16:05:49,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-03-11 16:05:49,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1297. [2021-03-11 16:05:49,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1297 states, 1296 states have (on average 3.1087962962962963) internal successors, (4029), 1296 states have internal predecessors, (4029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:49,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 4029 transitions. [2021-03-11 16:05:49,029 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 4029 transitions. Word has length 34 [2021-03-11 16:05:49,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:05:49,029 INFO L480 AbstractCegarLoop]: Abstraction has 1297 states and 4029 transitions. [2021-03-11 16:05:49,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:49,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 4029 transitions. [2021-03-11 16:05:49,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:05:49,031 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:05:49,031 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:05:49,031 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-03-11 16:05:49,031 INFO L428 AbstractCegarLoop]: === Iteration 128 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:05:49,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:05:49,031 INFO L82 PathProgramCache]: Analyzing trace with hash -874387920, now seen corresponding path program 128 times [2021-03-11 16:05:49,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:05:49,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005757394] [2021-03-11 16:05:49,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:05:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:05:49,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:49,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:05:49,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:49,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:05:49,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:49,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:05:49,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:49,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:49,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:49,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:49,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:49,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:05:49,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:49,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:05:49,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:49,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:49,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:49,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:49,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:49,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:49,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:49,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:49,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:49,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:49,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:49,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:49,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:49,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:49,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:49,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:49,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:49,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:49,525 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:05:49,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:05:49,579 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:05:49,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:49,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:05:49,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005757394] [2021-03-11 16:05:49,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:05:49,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:05:49,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726952604] [2021-03-11 16:05:49,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:05:49,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:05:49,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:05:49,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:05:49,586 INFO L87 Difference]: Start difference. First operand 1297 states and 4029 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:53,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:05:53,896 INFO L93 Difference]: Finished difference Result 1655 states and 5104 transitions. [2021-03-11 16:05:53,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 16:05:53,898 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:05:53,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:05:53,901 INFO L225 Difference]: With dead ends: 1655 [2021-03-11 16:05:53,901 INFO L226 Difference]: Without dead ends: 1630 [2021-03-11 16:05:53,902 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1887.1ms TimeCoverageRelationStatistics Valid=191, Invalid=1789, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 16:05:53,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2021-03-11 16:05:53,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1321. [2021-03-11 16:05:53,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 1320 states have (on average 3.099242424242424) internal successors, (4091), 1320 states have internal predecessors, (4091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:53,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 4091 transitions. [2021-03-11 16:05:53,919 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 4091 transitions. Word has length 34 [2021-03-11 16:05:53,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:05:53,919 INFO L480 AbstractCegarLoop]: Abstraction has 1321 states and 4091 transitions. [2021-03-11 16:05:53,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:53,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 4091 transitions. [2021-03-11 16:05:53,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:05:53,920 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:05:53,921 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:05:53,921 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-03-11 16:05:53,921 INFO L428 AbstractCegarLoop]: === Iteration 129 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:05:53,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:05:53,921 INFO L82 PathProgramCache]: Analyzing trace with hash -55949318, now seen corresponding path program 129 times [2021-03-11 16:05:53,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:05:53,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387954537] [2021-03-11 16:05:53,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:05:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:05:53,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:53,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:05:53,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:53,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:05:53,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:53,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:05:53,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:53,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:54,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:54,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:54,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:54,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:05:54,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:54,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:05:54,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:54,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:54,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:54,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:54,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:54,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:54,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:54,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:54,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:54,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:54,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:54,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:54,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:54,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:54,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:54,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:54,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:54,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:54,511 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:05:54,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:05:54,579 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:05:54,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:54,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:05:54,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387954537] [2021-03-11 16:05:54,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:05:54,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:05:54,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909028503] [2021-03-11 16:05:54,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:05:54,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:05:54,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:05:54,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:05:54,586 INFO L87 Difference]: Start difference. First operand 1321 states and 4091 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:58,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:05:58,227 INFO L93 Difference]: Finished difference Result 1633 states and 5037 transitions. [2021-03-11 16:05:58,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-11 16:05:58,229 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:05:58,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:05:58,232 INFO L225 Difference]: With dead ends: 1633 [2021-03-11 16:05:58,232 INFO L226 Difference]: Without dead ends: 1600 [2021-03-11 16:05:58,232 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 1867.1ms TimeCoverageRelationStatistics Valid=177, Invalid=1629, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 16:05:58,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2021-03-11 16:05:58,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1325. [2021-03-11 16:05:58,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 1324 states have (on average 3.096676737160121) internal successors, (4100), 1324 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:58,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 4100 transitions. [2021-03-11 16:05:58,247 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 4100 transitions. Word has length 34 [2021-03-11 16:05:58,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:05:58,248 INFO L480 AbstractCegarLoop]: Abstraction has 1325 states and 4100 transitions. [2021-03-11 16:05:58,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:05:58,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 4100 transitions. [2021-03-11 16:05:58,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:05:58,249 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:05:58,249 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:05:58,249 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-03-11 16:05:58,249 INFO L428 AbstractCegarLoop]: === Iteration 130 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:05:58,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:05:58,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1931279568, now seen corresponding path program 130 times [2021-03-11 16:05:58,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:05:58,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272473660] [2021-03-11 16:05:58,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:05:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:05:58,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:58,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:05:58,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:58,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:05:58,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:58,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:05:58,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:58,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:58,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:58,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:58,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:58,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:05:58,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:58,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:05:58,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:58,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:58,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:58,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:58,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:58,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:58,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:58,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:58,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:58,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:58,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:58,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:58,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:58,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:58,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:05:58,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:05:58,719 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:05:58,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:05:58,769 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:05:58,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:05:58,826 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:05:58,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:05:58,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:05:58,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272473660] [2021-03-11 16:05:58,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:05:58,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:05:58,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687125429] [2021-03-11 16:05:58,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:05:58,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:05:58,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:05:58,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:05:58,831 INFO L87 Difference]: Start difference. First operand 1325 states and 4100 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:02,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:06:02,283 INFO L93 Difference]: Finished difference Result 1599 states and 4947 transitions. [2021-03-11 16:06:02,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-11 16:06:02,285 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:06:02,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:06:02,288 INFO L225 Difference]: With dead ends: 1599 [2021-03-11 16:06:02,288 INFO L226 Difference]: Without dead ends: 1558 [2021-03-11 16:06:02,288 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1706.2ms TimeCoverageRelationStatistics Valid=168, Invalid=1554, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 16:06:02,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2021-03-11 16:06:02,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1321. [2021-03-11 16:06:02,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 1320 states have (on average 3.096212121212121) internal successors, (4087), 1320 states have internal predecessors, (4087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:02,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 4087 transitions. [2021-03-11 16:06:02,303 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 4087 transitions. Word has length 34 [2021-03-11 16:06:02,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:06:02,303 INFO L480 AbstractCegarLoop]: Abstraction has 1321 states and 4087 transitions. [2021-03-11 16:06:02,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:02,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 4087 transitions. [2021-03-11 16:06:02,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:06:02,305 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:06:02,305 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:06:02,305 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-03-11 16:06:02,305 INFO L428 AbstractCegarLoop]: === Iteration 131 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:06:02,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:06:02,305 INFO L82 PathProgramCache]: Analyzing trace with hash -93460418, now seen corresponding path program 131 times [2021-03-11 16:06:02,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:06:02,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558374464] [2021-03-11 16:06:02,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:06:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:06:02,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:02,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:06:02,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:02,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:06:02,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:02,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:06:02,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:02,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:02,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:02,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:02,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:02,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:06:02,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:02,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:06:02,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:02,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:02,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:02,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:02,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:02,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:02,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:02,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:02,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:02,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:06:02,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:02,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:06:02,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:02,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:06:02,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:02,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:06:02,776 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:06:02,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:06:02,794 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:06:02,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:06:02,848 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:06:02,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:02,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:06:02,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558374464] [2021-03-11 16:06:02,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:06:02,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:06:02,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136070159] [2021-03-11 16:06:02,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:06:02,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:06:02,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:06:02,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:06:02,855 INFO L87 Difference]: Start difference. First operand 1321 states and 4087 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:06,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:06:06,421 INFO L93 Difference]: Finished difference Result 1615 states and 4977 transitions. [2021-03-11 16:06:06,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-11 16:06:06,424 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:06:06,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:06:06,427 INFO L225 Difference]: With dead ends: 1615 [2021-03-11 16:06:06,427 INFO L226 Difference]: Without dead ends: 1586 [2021-03-11 16:06:06,428 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1679.9ms TimeCoverageRelationStatistics Valid=160, Invalid=1400, Unknown=0, NotChecked=0, Total=1560 [2021-03-11 16:06:06,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2021-03-11 16:06:06,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1381. [2021-03-11 16:06:06,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1380 states have (on average 3.1007246376811595) internal successors, (4279), 1380 states have internal predecessors, (4279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:06,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 4279 transitions. [2021-03-11 16:06:06,444 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 4279 transitions. Word has length 34 [2021-03-11 16:06:06,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:06:06,444 INFO L480 AbstractCegarLoop]: Abstraction has 1381 states and 4279 transitions. [2021-03-11 16:06:06,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:06,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 4279 transitions. [2021-03-11 16:06:06,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:06:06,445 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:06:06,446 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:06:06,446 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-03-11 16:06:06,446 INFO L428 AbstractCegarLoop]: === Iteration 132 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:06:06,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:06:06,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1409617722, now seen corresponding path program 132 times [2021-03-11 16:06:06,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:06:06,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207842520] [2021-03-11 16:06:06,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:06:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:06:06,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:06,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:06:06,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:06,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:06:06,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:06,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:06:06,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:06,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:06,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:06,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:06,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:06,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:06:06,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:06,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:06:06,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:06,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:06,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:06,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:06,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:06,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:06,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:06,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:06,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:06,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:06:06,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:06,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:06:06,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:06,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:06:06,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:06,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:06:06,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:06,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:06:06,919 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:06:06,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:06:06,975 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:06:06,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:06,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:06:06,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207842520] [2021-03-11 16:06:06,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:06:06,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:06:06,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613046921] [2021-03-11 16:06:06,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:06:06,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:06:06,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:06:06,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:06:06,982 INFO L87 Difference]: Start difference. First operand 1381 states and 4279 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:10,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:06:10,947 INFO L93 Difference]: Finished difference Result 1659 states and 5079 transitions. [2021-03-11 16:06:10,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 16:06:10,950 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:06:10,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:06:10,953 INFO L225 Difference]: With dead ends: 1659 [2021-03-11 16:06:10,953 INFO L226 Difference]: Without dead ends: 1634 [2021-03-11 16:06:10,953 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 1863.9ms TimeCoverageRelationStatistics Valid=184, Invalid=1708, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 16:06:10,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2021-03-11 16:06:10,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1365. [2021-03-11 16:06:10,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1364 states have (on average 3.0989736070381233) internal successors, (4227), 1364 states have internal predecessors, (4227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:10,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 4227 transitions. [2021-03-11 16:06:10,969 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 4227 transitions. Word has length 34 [2021-03-11 16:06:10,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:06:10,969 INFO L480 AbstractCegarLoop]: Abstraction has 1365 states and 4227 transitions. [2021-03-11 16:06:10,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:10,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 4227 transitions. [2021-03-11 16:06:10,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:06:10,970 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:06:10,970 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:06:10,970 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-03-11 16:06:10,971 INFO L428 AbstractCegarLoop]: === Iteration 133 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:06:10,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:06:10,971 INFO L82 PathProgramCache]: Analyzing trace with hash -591179120, now seen corresponding path program 133 times [2021-03-11 16:06:10,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:06:10,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445673946] [2021-03-11 16:06:10,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:06:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:06:10,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:10,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:06:10,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:10,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:06:11,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:11,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:06:11,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:11,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:11,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:11,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:11,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:11,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:06:11,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:11,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:06:11,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:11,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:11,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:11,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:11,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:11,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:11,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:11,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:11,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:11,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:06:11,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:11,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:06:11,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:11,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:06:11,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:11,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:06:11,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:11,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:06:11,556 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:06:11,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:06:11,640 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:06:11,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:11,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:06:11,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445673946] [2021-03-11 16:06:11,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:06:11,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:06:11,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940368881] [2021-03-11 16:06:11,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:06:11,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:06:11,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:06:11,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:06:11,647 INFO L87 Difference]: Start difference. First operand 1365 states and 4227 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:15,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:06:15,646 INFO L93 Difference]: Finished difference Result 1625 states and 4979 transitions. [2021-03-11 16:06:15,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-11 16:06:15,648 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:06:15,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:06:15,651 INFO L225 Difference]: With dead ends: 1625 [2021-03-11 16:06:15,651 INFO L226 Difference]: Without dead ends: 1564 [2021-03-11 16:06:15,651 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 1952.1ms TimeCoverageRelationStatistics Valid=166, Invalid=1556, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 16:06:15,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2021-03-11 16:06:15,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 1317. [2021-03-11 16:06:15,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 1316 states have (on average 3.107142857142857) internal successors, (4089), 1316 states have internal predecessors, (4089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:15,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 4089 transitions. [2021-03-11 16:06:15,665 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 4089 transitions. Word has length 34 [2021-03-11 16:06:15,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:06:15,665 INFO L480 AbstractCegarLoop]: Abstraction has 1317 states and 4089 transitions. [2021-03-11 16:06:15,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:15,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 4089 transitions. [2021-03-11 16:06:15,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:06:15,666 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:06:15,666 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:06:15,666 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-03-11 16:06:15,666 INFO L428 AbstractCegarLoop]: === Iteration 134 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:06:15,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:06:15,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1655013230, now seen corresponding path program 134 times [2021-03-11 16:06:15,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:06:15,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872836246] [2021-03-11 16:06:15,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:06:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:06:15,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:15,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:06:15,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:15,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:06:15,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:15,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:06:15,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:15,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:15,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:15,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:15,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:15,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:06:15,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:15,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:06:15,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:15,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:15,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:15,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:15,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:15,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:15,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:15,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:15,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:15,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:16,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:16,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:16,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:16,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:16,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:16,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:06:16,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:16,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:06:16,190 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:06:16,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:06:16,252 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:06:16,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:16,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:06:16,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872836246] [2021-03-11 16:06:16,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:06:16,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:06:16,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545541297] [2021-03-11 16:06:16,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:06:16,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:06:16,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:06:16,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:06:16,259 INFO L87 Difference]: Start difference. First operand 1317 states and 4089 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:20,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:06:20,844 INFO L93 Difference]: Finished difference Result 1758 states and 5465 transitions. [2021-03-11 16:06:20,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-11 16:06:20,846 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:06:20,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:06:20,849 INFO L225 Difference]: With dead ends: 1758 [2021-03-11 16:06:20,849 INFO L226 Difference]: Without dead ends: 1733 [2021-03-11 16:06:20,849 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 2196.0ms TimeCoverageRelationStatistics Valid=223, Invalid=2033, Unknown=0, NotChecked=0, Total=2256 [2021-03-11 16:06:20,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2021-03-11 16:06:20,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1323. [2021-03-11 16:06:20,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1323 states, 1322 states have (on average 3.1096822995461424) internal successors, (4111), 1322 states have internal predecessors, (4111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:20,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 4111 transitions. [2021-03-11 16:06:20,864 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 4111 transitions. Word has length 34 [2021-03-11 16:06:20,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:06:20,864 INFO L480 AbstractCegarLoop]: Abstraction has 1323 states and 4111 transitions. [2021-03-11 16:06:20,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:20,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 4111 transitions. [2021-03-11 16:06:20,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:06:20,866 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:06:20,866 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:06:20,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-03-11 16:06:20,866 INFO L428 AbstractCegarLoop]: === Iteration 135 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:06:20,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:06:20,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1114531876, now seen corresponding path program 135 times [2021-03-11 16:06:20,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:06:20,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43518550] [2021-03-11 16:06:20,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:06:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:06:20,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:20,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:06:20,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:20,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:06:20,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:20,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:06:20,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:20,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:20,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:20,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:20,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:20,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:06:20,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:20,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:06:21,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:21,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:21,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:21,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:21,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:21,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:21,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:21,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:21,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:21,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:21,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:21,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:21,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:21,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:21,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:21,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:06:21,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:21,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:06:21,356 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:06:21,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:06:21,410 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:06:21,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:21,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:06:21,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43518550] [2021-03-11 16:06:21,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:06:21,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:06:21,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644217402] [2021-03-11 16:06:21,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:06:21,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:06:21,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:06:21,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:06:21,416 INFO L87 Difference]: Start difference. First operand 1323 states and 4111 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:25,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:06:25,843 INFO L93 Difference]: Finished difference Result 1758 states and 5470 transitions. [2021-03-11 16:06:25,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 16:06:25,845 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:06:25,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:06:25,848 INFO L225 Difference]: With dead ends: 1758 [2021-03-11 16:06:25,848 INFO L226 Difference]: Without dead ends: 1725 [2021-03-11 16:06:25,849 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 2013.6ms TimeCoverageRelationStatistics Valid=214, Invalid=1856, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 16:06:25,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2021-03-11 16:06:25,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1327. [2021-03-11 16:06:25,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 1326 states have (on average 3.1070889894419307) internal successors, (4120), 1326 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:25,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 4120 transitions. [2021-03-11 16:06:25,865 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 4120 transitions. Word has length 34 [2021-03-11 16:06:25,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:06:25,865 INFO L480 AbstractCegarLoop]: Abstraction has 1327 states and 4120 transitions. [2021-03-11 16:06:25,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:25,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 4120 transitions. [2021-03-11 16:06:25,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:06:25,866 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:06:25,866 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:06:25,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-03-11 16:06:25,866 INFO L428 AbstractCegarLoop]: === Iteration 136 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:06:25,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:06:25,867 INFO L82 PathProgramCache]: Analyzing trace with hash 579362194, now seen corresponding path program 136 times [2021-03-11 16:06:25,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:06:25,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215399388] [2021-03-11 16:06:25,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:06:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:06:25,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:25,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:06:25,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:25,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:06:25,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:25,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:06:25,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:25,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:25,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:25,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:25,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:25,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:06:25,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:25,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:06:26,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:26,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:26,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:26,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:26,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:26,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:26,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:26,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:26,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:26,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:26,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:26,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:26,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:26,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:26,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:26,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:06:26,303 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:06:26,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:06:26,354 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:06:26,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:06:26,418 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:06:26,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:26,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:06:26,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215399388] [2021-03-11 16:06:26,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:06:26,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:06:26,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383245919] [2021-03-11 16:06:26,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:06:26,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:06:26,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:06:26,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:06:26,426 INFO L87 Difference]: Start difference. First operand 1327 states and 4120 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:30,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:06:30,613 INFO L93 Difference]: Finished difference Result 1717 states and 5380 transitions. [2021-03-11 16:06:30,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 16:06:30,616 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:06:30,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:06:30,619 INFO L225 Difference]: With dead ends: 1717 [2021-03-11 16:06:30,619 INFO L226 Difference]: Without dead ends: 1676 [2021-03-11 16:06:30,619 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 2005.5ms TimeCoverageRelationStatistics Valid=213, Invalid=1857, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 16:06:30,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2021-03-11 16:06:30,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1323. [2021-03-11 16:06:30,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1323 states, 1322 states have (on average 3.1081694402420577) internal successors, (4109), 1322 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:30,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 4109 transitions. [2021-03-11 16:06:30,635 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 4109 transitions. Word has length 34 [2021-03-11 16:06:30,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:06:30,635 INFO L480 AbstractCegarLoop]: Abstraction has 1323 states and 4109 transitions. [2021-03-11 16:06:30,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:30,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 4109 transitions. [2021-03-11 16:06:30,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:06:30,636 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:06:30,636 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:06:30,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-03-11 16:06:30,636 INFO L428 AbstractCegarLoop]: === Iteration 137 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:06:30,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:06:30,637 INFO L82 PathProgramCache]: Analyzing trace with hash 515218016, now seen corresponding path program 137 times [2021-03-11 16:06:30,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:06:30,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760133063] [2021-03-11 16:06:30,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:06:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:06:30,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:30,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:06:30,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:30,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:06:30,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:30,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:06:30,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:30,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:30,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:30,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:30,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:30,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:06:30,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:30,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:06:30,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:30,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:30,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:30,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:30,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:30,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:30,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:30,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:30,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:30,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:31,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:31,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:31,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:31,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:31,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:31,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:31,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:31,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:06:31,179 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:06:31,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:06:31,249 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:06:31,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:31,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:06:31,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760133063] [2021-03-11 16:06:31,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:06:31,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:06:31,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131237841] [2021-03-11 16:06:31,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:06:31,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:06:31,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:06:31,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:06:31,256 INFO L87 Difference]: Start difference. First operand 1323 states and 4109 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:37,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:06:37,448 INFO L93 Difference]: Finished difference Result 1973 states and 6109 transitions. [2021-03-11 16:06:37,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-11 16:06:37,451 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:06:37,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:06:37,455 INFO L225 Difference]: With dead ends: 1973 [2021-03-11 16:06:37,455 INFO L226 Difference]: Without dead ends: 1948 [2021-03-11 16:06:37,455 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 2740.9ms TimeCoverageRelationStatistics Valid=275, Invalid=2587, Unknown=0, NotChecked=0, Total=2862 [2021-03-11 16:06:37,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2021-03-11 16:06:37,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1327. [2021-03-11 16:06:37,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 1326 states have (on average 3.107843137254902) internal successors, (4121), 1326 states have internal predecessors, (4121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:37,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 4121 transitions. [2021-03-11 16:06:37,472 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 4121 transitions. Word has length 34 [2021-03-11 16:06:37,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:06:37,472 INFO L480 AbstractCegarLoop]: Abstraction has 1327 states and 4121 transitions. [2021-03-11 16:06:37,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:37,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 4121 transitions. [2021-03-11 16:06:37,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:06:37,473 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:06:37,473 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:06:37,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-03-11 16:06:37,473 INFO L428 AbstractCegarLoop]: === Iteration 138 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:06:37,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:06:37,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1405993322, now seen corresponding path program 138 times [2021-03-11 16:06:37,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:06:37,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013473881] [2021-03-11 16:06:37,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:06:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:06:37,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:37,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:06:37,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:37,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:06:37,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:37,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:06:37,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:37,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:37,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:37,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:37,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:37,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:06:37,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:37,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:06:37,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:37,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:37,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:37,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:37,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:37,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:37,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:37,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:37,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:37,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:37,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:37,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:37,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:37,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:37,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:37,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:37,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:37,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:06:38,017 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:06:38,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:06:38,076 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:06:38,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:38,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:06:38,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013473881] [2021-03-11 16:06:38,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:06:38,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:06:38,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803113636] [2021-03-11 16:06:38,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:06:38,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:06:38,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:06:38,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:06:38,083 INFO L87 Difference]: Start difference. First operand 1327 states and 4121 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:44,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:06:44,337 INFO L93 Difference]: Finished difference Result 1993 states and 6178 transitions. [2021-03-11 16:06:44,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-03-11 16:06:44,340 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:06:44,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:06:44,344 INFO L225 Difference]: With dead ends: 1993 [2021-03-11 16:06:44,344 INFO L226 Difference]: Without dead ends: 1960 [2021-03-11 16:06:44,344 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 2839.0ms TimeCoverageRelationStatistics Valid=272, Invalid=2590, Unknown=0, NotChecked=0, Total=2862 [2021-03-11 16:06:44,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2021-03-11 16:06:44,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1349. [2021-03-11 16:06:44,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1348 states have (on average 3.107566765578635) internal successors, (4189), 1348 states have internal predecessors, (4189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:44,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 4189 transitions. [2021-03-11 16:06:44,361 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 4189 transitions. Word has length 34 [2021-03-11 16:06:44,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:06:44,362 INFO L480 AbstractCegarLoop]: Abstraction has 1349 states and 4189 transitions. [2021-03-11 16:06:44,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:44,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 4189 transitions. [2021-03-11 16:06:44,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:06:44,363 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:06:44,363 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:06:44,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-03-11 16:06:44,363 INFO L428 AbstractCegarLoop]: === Iteration 139 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:06:44,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:06:44,364 INFO L82 PathProgramCache]: Analyzing trace with hash -2097912370, now seen corresponding path program 139 times [2021-03-11 16:06:44,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:06:44,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943808000] [2021-03-11 16:06:44,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:06:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:06:44,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:44,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:06:44,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:44,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:06:44,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:44,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:06:44,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:44,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:44,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:44,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:44,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:44,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:06:44,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:44,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:06:44,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:44,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:44,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:44,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:44,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:44,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:44,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:44,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:44,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:44,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:44,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:44,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:44,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:44,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:44,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:44,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:44,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:44,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:06:44,968 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:06:44,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:06:45,030 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:06:45,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:45,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:06:45,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943808000] [2021-03-11 16:06:45,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:06:45,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:06:45,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357303255] [2021-03-11 16:06:45,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:06:45,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:06:45,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:06:45,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:06:45,037 INFO L87 Difference]: Start difference. First operand 1349 states and 4189 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:51,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:06:51,492 INFO L93 Difference]: Finished difference Result 1951 states and 6024 transitions. [2021-03-11 16:06:51,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-03-11 16:06:51,495 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:06:51,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:06:51,498 INFO L225 Difference]: With dead ends: 1951 [2021-03-11 16:06:51,498 INFO L226 Difference]: Without dead ends: 1926 [2021-03-11 16:06:51,499 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 3217.5ms TimeCoverageRelationStatistics Valid=322, Invalid=3218, Unknown=0, NotChecked=0, Total=3540 [2021-03-11 16:06:51,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2021-03-11 16:06:51,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1349. [2021-03-11 16:06:51,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1348 states have (on average 3.107566765578635) internal successors, (4189), 1348 states have internal predecessors, (4189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:51,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 4189 transitions. [2021-03-11 16:06:51,515 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 4189 transitions. Word has length 34 [2021-03-11 16:06:51,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:06:51,515 INFO L480 AbstractCegarLoop]: Abstraction has 1349 states and 4189 transitions. [2021-03-11 16:06:51,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:51,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 4189 transitions. [2021-03-11 16:06:51,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:06:51,516 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:06:51,516 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:06:51,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-03-11 16:06:51,517 INFO L428 AbstractCegarLoop]: === Iteration 140 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:06:51,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:06:51,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1557431016, now seen corresponding path program 140 times [2021-03-11 16:06:51,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:06:51,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594540698] [2021-03-11 16:06:51,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:06:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:06:51,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:51,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:06:51,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:51,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:06:51,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:51,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:06:51,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:51,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:51,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:51,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:51,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:51,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:06:51,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:51,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:06:51,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:51,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:51,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:51,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:51,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:51,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:51,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:51,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:51,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:51,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:51,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:51,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:51,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:51,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:51,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:51,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:52,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:52,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:06:52,074 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:06:52,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:06:52,144 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:06:52,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:52,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:06:52,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594540698] [2021-03-11 16:06:52,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:06:52,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:06:52,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743938914] [2021-03-11 16:06:52,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:06:52,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:06:52,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:06:52,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:06:52,152 INFO L87 Difference]: Start difference. First operand 1349 states and 4189 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:58,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:06:58,765 INFO L93 Difference]: Finished difference Result 1954 states and 6040 transitions. [2021-03-11 16:06:58,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-03-11 16:06:58,768 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:06:58,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:06:58,771 INFO L225 Difference]: With dead ends: 1954 [2021-03-11 16:06:58,771 INFO L226 Difference]: Without dead ends: 1921 [2021-03-11 16:06:58,771 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 3073.1ms TimeCoverageRelationStatistics Valid=306, Invalid=3116, Unknown=0, NotChecked=0, Total=3422 [2021-03-11 16:06:58,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2021-03-11 16:06:58,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1349. [2021-03-11 16:06:58,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1348 states have (on average 3.1060830860534123) internal successors, (4187), 1348 states have internal predecessors, (4187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:58,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 4187 transitions. [2021-03-11 16:06:58,787 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 4187 transitions. Word has length 34 [2021-03-11 16:06:58,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:06:58,787 INFO L480 AbstractCegarLoop]: Abstraction has 1349 states and 4187 transitions. [2021-03-11 16:06:58,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:06:58,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 4187 transitions. [2021-03-11 16:06:58,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:06:58,789 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:06:58,789 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:06:58,789 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-03-11 16:06:58,789 INFO L428 AbstractCegarLoop]: === Iteration 141 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:06:58,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:06:58,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1830940532, now seen corresponding path program 141 times [2021-03-11 16:06:58,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:06:58,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666750944] [2021-03-11 16:06:58,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:06:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:06:58,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:58,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:06:58,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:58,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:06:58,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:58,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:06:58,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:58,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:58,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:58,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:58,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:58,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:06:58,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:58,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:06:58,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:58,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:58,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:58,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:59,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:59,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:59,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:59,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:59,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:59,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:59,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:59,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:59,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:59,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:59,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:06:59,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:59,266 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 16:06:59,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:06:59,326 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:06:59,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:06:59,387 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:06:59,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:06:59,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:06:59,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666750944] [2021-03-11 16:06:59,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:06:59,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:06:59,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19482560] [2021-03-11 16:06:59,393 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:06:59,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:06:59,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:06:59,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:06:59,394 INFO L87 Difference]: Start difference. First operand 1349 states and 4187 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:07,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:07:07,345 INFO L93 Difference]: Finished difference Result 2074 states and 6418 transitions. [2021-03-11 16:07:07,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-11 16:07:07,347 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:07:07,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:07:07,351 INFO L225 Difference]: With dead ends: 2074 [2021-03-11 16:07:07,351 INFO L226 Difference]: Without dead ends: 2043 [2021-03-11 16:07:07,351 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1025 ImplicationChecksByTransitivity, 3855.5ms TimeCoverageRelationStatistics Valid=360, Invalid=3546, Unknown=0, NotChecked=0, Total=3906 [2021-03-11 16:07:07,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2021-03-11 16:07:07,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 1353. [2021-03-11 16:07:07,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1353 states, 1352 states have (on average 3.105769230769231) internal successors, (4199), 1352 states have internal predecessors, (4199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:07,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 4199 transitions. [2021-03-11 16:07:07,368 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 4199 transitions. Word has length 34 [2021-03-11 16:07:07,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:07:07,368 INFO L480 AbstractCegarLoop]: Abstraction has 1353 states and 4199 transitions. [2021-03-11 16:07:07,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:07,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 4199 transitions. [2021-03-11 16:07:07,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:07:07,370 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:07:07,370 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:07:07,370 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-03-11 16:07:07,370 INFO L428 AbstractCegarLoop]: === Iteration 142 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:07:07,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:07:07,370 INFO L82 PathProgramCache]: Analyzing trace with hash 157469262, now seen corresponding path program 142 times [2021-03-11 16:07:07,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:07:07,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702978056] [2021-03-11 16:07:07,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:07:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:07:07,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:07,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:07:07,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:07,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:07:07,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:07,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:07:07,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:07,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:07,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:07,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:07,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:07,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:07:07,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:07,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:07:07,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:07,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:07,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:07,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:07,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:07,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:07,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:07,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:07,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:07,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:07,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:07,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:07,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:07,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:07,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:07,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:07,874 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 16:07:07,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:07:07,937 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:07:07,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:07:08,004 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:07:08,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:08,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:07:08,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702978056] [2021-03-11 16:07:08,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:07:08,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:07:08,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607328723] [2021-03-11 16:07:08,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:07:08,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:07:08,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:07:08,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:07:08,011 INFO L87 Difference]: Start difference. First operand 1353 states and 4199 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:15,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:07:15,873 INFO L93 Difference]: Finished difference Result 2043 states and 6346 transitions. [2021-03-11 16:07:15,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-11 16:07:15,876 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:07:15,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:07:15,880 INFO L225 Difference]: With dead ends: 2043 [2021-03-11 16:07:15,880 INFO L226 Difference]: Without dead ends: 2008 [2021-03-11 16:07:15,880 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 3787.5ms TimeCoverageRelationStatistics Valid=350, Invalid=3682, Unknown=0, NotChecked=0, Total=4032 [2021-03-11 16:07:15,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2021-03-11 16:07:15,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 1351. [2021-03-11 16:07:15,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1351 states, 1350 states have (on average 3.1059259259259258) internal successors, (4193), 1350 states have internal predecessors, (4193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:15,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1351 states to 1351 states and 4193 transitions. [2021-03-11 16:07:15,896 INFO L78 Accepts]: Start accepts. Automaton has 1351 states and 4193 transitions. Word has length 34 [2021-03-11 16:07:15,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:07:15,896 INFO L480 AbstractCegarLoop]: Abstraction has 1351 states and 4193 transitions. [2021-03-11 16:07:15,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:15,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1351 states and 4193 transitions. [2021-03-11 16:07:15,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:07:15,898 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:07:15,898 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:07:15,898 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-03-11 16:07:15,898 INFO L428 AbstractCegarLoop]: === Iteration 143 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:07:15,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:07:15,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1131203656, now seen corresponding path program 143 times [2021-03-11 16:07:15,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:07:15,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274297521] [2021-03-11 16:07:15,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:07:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:07:15,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:15,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:07:15,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:15,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:07:15,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:15,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:07:15,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:15,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:15,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:15,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:16,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:16,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:07:16,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:16,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:07:16,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:16,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:16,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:16,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:16,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:16,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:16,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:16,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:16,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:16,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:16,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:16,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:16,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:16,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:16,385 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 16:07:16,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:07:16,447 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:07:16,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:07:16,510 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:07:16,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:07:16,579 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:07:16,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:16,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:07:16,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274297521] [2021-03-11 16:07:16,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:07:16,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:07:16,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815394217] [2021-03-11 16:07:16,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:07:16,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:07:16,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:07:16,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:07:16,586 INFO L87 Difference]: Start difference. First operand 1351 states and 4193 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:21,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:07:21,254 INFO L93 Difference]: Finished difference Result 1719 states and 5382 transitions. [2021-03-11 16:07:21,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-11 16:07:21,257 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:07:21,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:07:21,261 INFO L225 Difference]: With dead ends: 1719 [2021-03-11 16:07:21,261 INFO L226 Difference]: Without dead ends: 1682 [2021-03-11 16:07:21,261 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 2192.0ms TimeCoverageRelationStatistics Valid=177, Invalid=1545, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 16:07:21,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2021-03-11 16:07:21,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1355. [2021-03-11 16:07:21,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1355 states, 1354 states have (on average 3.1056129985228953) internal successors, (4205), 1354 states have internal predecessors, (4205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:21,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 4205 transitions. [2021-03-11 16:07:21,277 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 4205 transitions. Word has length 34 [2021-03-11 16:07:21,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:07:21,277 INFO L480 AbstractCegarLoop]: Abstraction has 1355 states and 4205 transitions. [2021-03-11 16:07:21,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:21,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 4205 transitions. [2021-03-11 16:07:21,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:07:21,279 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:07:21,279 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:07:21,279 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-03-11 16:07:21,279 INFO L428 AbstractCegarLoop]: === Iteration 144 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:07:21,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:07:21,280 INFO L82 PathProgramCache]: Analyzing trace with hash -859831914, now seen corresponding path program 144 times [2021-03-11 16:07:21,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:07:21,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298208534] [2021-03-11 16:07:21,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:07:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:07:21,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:21,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:07:21,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:21,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:07:21,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:21,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:07:21,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:21,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:21,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:21,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:21,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:21,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:07:21,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:21,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:07:21,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:21,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:21,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:21,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:21,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:21,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:21,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:21,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:21,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:21,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:21,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:21,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:21,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:21,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:21,817 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 16:07:21,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:07:21,886 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 16:07:21,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:07:21,961 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:07:21,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:07:22,044 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:07:22,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:22,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:07:22,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298208534] [2021-03-11 16:07:22,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:07:22,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:07:22,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783262767] [2021-03-11 16:07:22,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:07:22,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:07:22,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:07:22,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:07:22,053 INFO L87 Difference]: Start difference. First operand 1355 states and 4205 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:28,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:07:28,222 INFO L93 Difference]: Finished difference Result 1771 states and 5512 transitions. [2021-03-11 16:07:28,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-11 16:07:28,225 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:07:28,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:07:28,228 INFO L225 Difference]: With dead ends: 1771 [2021-03-11 16:07:28,229 INFO L226 Difference]: Without dead ends: 1740 [2021-03-11 16:07:28,229 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 3196.4ms TimeCoverageRelationStatistics Valid=259, Invalid=2291, Unknown=0, NotChecked=0, Total=2550 [2021-03-11 16:07:28,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2021-03-11 16:07:28,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1359. [2021-03-11 16:07:28,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 1358 states have (on average 3.1082474226804124) internal successors, (4221), 1358 states have internal predecessors, (4221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:28,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 4221 transitions. [2021-03-11 16:07:28,251 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 4221 transitions. Word has length 34 [2021-03-11 16:07:28,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:07:28,251 INFO L480 AbstractCegarLoop]: Abstraction has 1359 states and 4221 transitions. [2021-03-11 16:07:28,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:28,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 4221 transitions. [2021-03-11 16:07:28,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:07:28,253 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:07:28,253 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:07:28,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-03-11 16:07:28,253 INFO L428 AbstractCegarLoop]: === Iteration 145 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:07:28,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:07:28,253 INFO L82 PathProgramCache]: Analyzing trace with hash 58118276, now seen corresponding path program 145 times [2021-03-11 16:07:28,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:07:28,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996674227] [2021-03-11 16:07:28,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:07:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:07:28,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:28,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:07:28,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:28,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:07:28,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:28,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:07:28,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:28,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:28,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:28,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:28,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:28,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:07:28,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:28,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:07:28,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:28,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:28,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:28,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:28,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:28,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:28,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:28,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:28,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:28,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:28,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:28,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:28,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:28,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:28,713 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 16:07:28,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:07:28,775 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 16:07:28,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:07:28,839 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:07:28,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:07:28,933 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:07:28,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:28,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:07:28,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996674227] [2021-03-11 16:07:28,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:07:28,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:07:28,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708058136] [2021-03-11 16:07:28,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:07:28,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:07:28,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:07:28,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:07:28,940 INFO L87 Difference]: Start difference. First operand 1359 states and 4221 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:34,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:07:34,853 INFO L93 Difference]: Finished difference Result 1753 states and 5468 transitions. [2021-03-11 16:07:34,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-11 16:07:34,856 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:07:34,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:07:34,860 INFO L225 Difference]: With dead ends: 1753 [2021-03-11 16:07:34,860 INFO L226 Difference]: Without dead ends: 1714 [2021-03-11 16:07:34,860 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 2844.8ms TimeCoverageRelationStatistics Valid=227, Invalid=2029, Unknown=0, NotChecked=0, Total=2256 [2021-03-11 16:07:34,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2021-03-11 16:07:34,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1353. [2021-03-11 16:07:34,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1353 states, 1352 states have (on average 3.1087278106508878) internal successors, (4203), 1352 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:34,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 4203 transitions. [2021-03-11 16:07:34,877 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 4203 transitions. Word has length 34 [2021-03-11 16:07:34,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:07:34,877 INFO L480 AbstractCegarLoop]: Abstraction has 1353 states and 4203 transitions. [2021-03-11 16:07:34,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:34,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 4203 transitions. [2021-03-11 16:07:34,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:07:34,879 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:07:34,879 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:07:34,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-03-11 16:07:34,879 INFO L428 AbstractCegarLoop]: === Iteration 146 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:07:34,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:07:34,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1372496888, now seen corresponding path program 146 times [2021-03-11 16:07:34,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:07:34,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130042510] [2021-03-11 16:07:34,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:07:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:07:34,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:34,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:07:34,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:34,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:07:34,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:34,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:07:34,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:34,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:34,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:34,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:35,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:35,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:07:35,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:35,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:07:35,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:35,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:35,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:35,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:35,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:35,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:35,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:35,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:35,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:35,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:35,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:35,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:35,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:35,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:07:35,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:35,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:07:35,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:35,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:07:35,522 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:07:35,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:07:35,588 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:07:35,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:35,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:07:35,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130042510] [2021-03-11 16:07:35,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:07:35,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:07:35,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138325624] [2021-03-11 16:07:35,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:07:35,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:07:35,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:07:35,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:07:35,595 INFO L87 Difference]: Start difference. First operand 1353 states and 4203 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:41,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:07:41,049 INFO L93 Difference]: Finished difference Result 1719 states and 5343 transitions. [2021-03-11 16:07:41,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 16:07:41,052 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:07:41,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:07:41,055 INFO L225 Difference]: With dead ends: 1719 [2021-03-11 16:07:41,055 INFO L226 Difference]: Without dead ends: 1694 [2021-03-11 16:07:41,055 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 2389.0ms TimeCoverageRelationStatistics Valid=187, Invalid=1705, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 16:07:41,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2021-03-11 16:07:41,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1357. [2021-03-11 16:07:41,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 1356 states have (on average 3.1091445427728615) internal successors, (4216), 1356 states have internal predecessors, (4216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:41,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 4216 transitions. [2021-03-11 16:07:41,070 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 4216 transitions. Word has length 34 [2021-03-11 16:07:41,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:07:41,070 INFO L480 AbstractCegarLoop]: Abstraction has 1357 states and 4216 transitions. [2021-03-11 16:07:41,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:41,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 4216 transitions. [2021-03-11 16:07:41,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:07:41,072 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:07:41,072 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:07:41,072 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-03-11 16:07:41,072 INFO L428 AbstractCegarLoop]: === Iteration 147 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:07:41,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:07:41,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1912978242, now seen corresponding path program 147 times [2021-03-11 16:07:41,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:07:41,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647466816] [2021-03-11 16:07:41,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:07:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:07:41,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:41,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:07:41,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:41,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:07:41,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:41,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:07:41,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:41,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:41,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:41,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:41,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:41,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:07:41,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:41,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:07:41,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:41,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:41,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:41,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:41,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:41,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:41,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:41,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:41,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:41,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:41,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:41,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:41,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:41,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:07:41,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:41,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:07:41,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:41,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:07:41,687 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:07:41,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:07:41,764 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:07:41,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:41,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:07:41,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647466816] [2021-03-11 16:07:41,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:07:41,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:07:41,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606344977] [2021-03-11 16:07:41,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:07:41,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:07:41,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:07:41,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:07:41,773 INFO L87 Difference]: Start difference. First operand 1357 states and 4216 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:46,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:07:46,548 INFO L93 Difference]: Finished difference Result 1697 states and 5276 transitions. [2021-03-11 16:07:46,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-11 16:07:46,551 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:07:46,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:07:46,555 INFO L225 Difference]: With dead ends: 1697 [2021-03-11 16:07:46,555 INFO L226 Difference]: Without dead ends: 1664 [2021-03-11 16:07:46,555 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 2235.2ms TimeCoverageRelationStatistics Valid=173, Invalid=1549, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 16:07:46,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2021-03-11 16:07:46,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1361. [2021-03-11 16:07:46,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1360 states have (on average 3.1066176470588234) internal successors, (4225), 1360 states have internal predecessors, (4225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:46,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 4225 transitions. [2021-03-11 16:07:46,571 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 4225 transitions. Word has length 34 [2021-03-11 16:07:46,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:07:46,571 INFO L480 AbstractCegarLoop]: Abstraction has 1361 states and 4225 transitions. [2021-03-11 16:07:46,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:46,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 4225 transitions. [2021-03-11 16:07:46,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:07:46,573 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:07:46,573 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:07:46,573 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-03-11 16:07:46,573 INFO L428 AbstractCegarLoop]: === Iteration 148 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:07:46,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:07:46,573 INFO L82 PathProgramCache]: Analyzing trace with hash -688094984, now seen corresponding path program 148 times [2021-03-11 16:07:46,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:07:46,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683311092] [2021-03-11 16:07:46,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:07:46,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:07:46,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:46,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:07:46,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:46,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:07:46,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:46,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:07:46,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:46,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:46,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:46,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:46,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:46,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:07:46,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:46,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:07:46,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:46,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:46,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:46,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:46,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:46,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:46,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:46,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:46,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:46,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:47,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:47,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:47,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:47,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:07:47,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:47,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:07:47,152 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:07:47,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:07:47,225 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:07:47,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:07:47,305 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:07:47,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:47,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:07:47,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683311092] [2021-03-11 16:07:47,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:07:47,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:07:47,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279702820] [2021-03-11 16:07:47,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:07:47,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:07:47,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:07:47,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:07:47,315 INFO L87 Difference]: Start difference. First operand 1361 states and 4225 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:52,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:07:52,176 INFO L93 Difference]: Finished difference Result 1663 states and 5186 transitions. [2021-03-11 16:07:52,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-11 16:07:52,180 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:07:52,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:07:52,183 INFO L225 Difference]: With dead ends: 1663 [2021-03-11 16:07:52,183 INFO L226 Difference]: Without dead ends: 1622 [2021-03-11 16:07:52,183 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 2249.1ms TimeCoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2021-03-11 16:07:52,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2021-03-11 16:07:52,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1357. [2021-03-11 16:07:52,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 1356 states have (on average 3.106194690265487) internal successors, (4212), 1356 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:52,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 4212 transitions. [2021-03-11 16:07:52,200 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 4212 transitions. Word has length 34 [2021-03-11 16:07:52,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:07:52,200 INFO L480 AbstractCegarLoop]: Abstraction has 1357 states and 4212 transitions. [2021-03-11 16:07:52,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:52,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 4212 transitions. [2021-03-11 16:07:52,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:07:52,201 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:07:52,201 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:07:52,201 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-03-11 16:07:52,201 INFO L428 AbstractCegarLoop]: === Iteration 149 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:07:52,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:07:52,202 INFO L82 PathProgramCache]: Analyzing trace with hash 224549510, now seen corresponding path program 149 times [2021-03-11 16:07:52,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:07:52,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294792710] [2021-03-11 16:07:52,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:07:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:07:52,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:52,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:07:52,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:52,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:07:52,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:52,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:07:52,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:52,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:52,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:52,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:52,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:52,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:07:52,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:52,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:07:52,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:52,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:52,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:52,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:52,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:52,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:52,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:52,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:52,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:52,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:52,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:52,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:52,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:52,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:07:52,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:52,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:07:52,734 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:07:52,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:07:52,759 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:07:52,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:07:52,833 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:07:52,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:52,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:07:52,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294792710] [2021-03-11 16:07:52,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:07:52,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 16:07:52,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850760915] [2021-03-11 16:07:52,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 16:07:52,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:07:52,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 16:07:52,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-03-11 16:07:52,842 INFO L87 Difference]: Start difference. First operand 1357 states and 4212 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:57,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:07:57,770 INFO L93 Difference]: Finished difference Result 1691 states and 5255 transitions. [2021-03-11 16:07:57,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 16:07:57,774 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:07:57,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:07:57,777 INFO L225 Difference]: With dead ends: 1691 [2021-03-11 16:07:57,777 INFO L226 Difference]: Without dead ends: 1662 [2021-03-11 16:07:57,777 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 2088.4ms TimeCoverageRelationStatistics Valid=155, Invalid=1327, Unknown=0, NotChecked=0, Total=1482 [2021-03-11 16:07:57,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2021-03-11 16:07:57,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1381. [2021-03-11 16:07:57,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1380 states have (on average 3.1130434782608694) internal successors, (4296), 1380 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:57,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 4296 transitions. [2021-03-11 16:07:57,794 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 4296 transitions. Word has length 34 [2021-03-11 16:07:57,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:07:57,794 INFO L480 AbstractCegarLoop]: Abstraction has 1381 states and 4296 transitions. [2021-03-11 16:07:57,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:07:57,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 4296 transitions. [2021-03-11 16:07:57,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:07:57,795 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:07:57,795 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:07:57,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-03-11 16:07:57,795 INFO L428 AbstractCegarLoop]: === Iteration 150 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:07:57,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:07:57,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1882234610, now seen corresponding path program 150 times [2021-03-11 16:07:57,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:07:57,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533170538] [2021-03-11 16:07:57,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:07:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:07:57,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:57,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:07:57,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:57,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:07:57,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:57,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:07:57,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:57,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:57,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:57,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:57,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:57,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:07:57,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:57,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:07:58,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:58,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:58,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:58,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:58,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:58,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:58,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:58,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:58,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:58,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:58,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:58,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:58,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:58,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:07:58,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:58,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:07:58,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:07:58,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:07:58,486 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:07:58,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:07:58,558 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:07:58,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:07:58,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:07:58,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533170538] [2021-03-11 16:07:58,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:07:58,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:07:58,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152655580] [2021-03-11 16:07:58,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:07:58,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:07:58,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:07:58,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:07:58,565 INFO L87 Difference]: Start difference. First operand 1381 states and 4296 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:08:03,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:08:03,917 INFO L93 Difference]: Finished difference Result 1735 states and 5357 transitions. [2021-03-11 16:08:03,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 16:08:03,921 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:08:03,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:08:03,924 INFO L225 Difference]: With dead ends: 1735 [2021-03-11 16:08:03,924 INFO L226 Difference]: Without dead ends: 1710 [2021-03-11 16:08:03,925 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 2457.5ms TimeCoverageRelationStatistics Valid=179, Invalid=1627, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 16:08:03,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1710 states. [2021-03-11 16:08:03,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1710 to 1365. [2021-03-11 16:08:03,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1364 states have (on average 3.1114369501466275) internal successors, (4244), 1364 states have internal predecessors, (4244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:08:03,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 4244 transitions. [2021-03-11 16:08:03,941 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 4244 transitions. Word has length 34 [2021-03-11 16:08:03,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:08:03,941 INFO L480 AbstractCegarLoop]: Abstraction has 1365 states and 4244 transitions. [2021-03-11 16:08:03,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:08:03,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 4244 transitions. [2021-03-11 16:08:03,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:08:03,943 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:08:03,943 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:08:03,943 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-03-11 16:08:03,943 INFO L428 AbstractCegarLoop]: === Iteration 151 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:08:03,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:08:03,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1341753256, now seen corresponding path program 151 times [2021-03-11 16:08:03,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:08:03,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377993163] [2021-03-11 16:08:03,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:08:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:08:03,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:03,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:08:03,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:03,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:08:03,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:03,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:08:04,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:04,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:04,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:04,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:04,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:04,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:08:04,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:04,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:08:04,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:04,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:04,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:04,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:04,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:04,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:04,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:04,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:04,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:04,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:04,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:04,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:04,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:04,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:08:04,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:04,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:08:04,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:04,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:08:04,569 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:08:04,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:08:04,664 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:08:04,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:04,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:08:04,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377993163] [2021-03-11 16:08:04,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:08:04,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:08:04,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746710341] [2021-03-11 16:08:04,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:08:04,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:08:04,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:08:04,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:08:04,676 INFO L87 Difference]: Start difference. First operand 1365 states and 4244 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:08:09,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:08:09,558 INFO L93 Difference]: Finished difference Result 1701 states and 5257 transitions. [2021-03-11 16:08:09,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 16:08:09,561 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:08:09,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:08:09,564 INFO L225 Difference]: With dead ends: 1701 [2021-03-11 16:08:09,564 INFO L226 Difference]: Without dead ends: 1652 [2021-03-11 16:08:09,565 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 2206.7ms TimeCoverageRelationStatistics Valid=161, Invalid=1479, Unknown=0, NotChecked=0, Total=1640 [2021-03-11 16:08:09,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2021-03-11 16:08:09,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1361. [2021-03-11 16:08:09,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1360 states have (on average 3.1125) internal successors, (4233), 1360 states have internal predecessors, (4233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:08:09,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 4233 transitions. [2021-03-11 16:08:09,580 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 4233 transitions. Word has length 34 [2021-03-11 16:08:09,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:08:09,580 INFO L480 AbstractCegarLoop]: Abstraction has 1361 states and 4233 transitions. [2021-03-11 16:08:09,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:08:09,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 4233 transitions. [2021-03-11 16:08:09,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:08:09,582 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:08:09,582 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:08:09,582 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-03-11 16:08:09,582 INFO L428 AbstractCegarLoop]: === Iteration 152 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:08:09,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:08:09,582 INFO L82 PathProgramCache]: Analyzing trace with hash -711412334, now seen corresponding path program 152 times [2021-03-11 16:08:09,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:08:09,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289755029] [2021-03-11 16:08:09,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:08:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:08:09,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:09,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:08:09,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:09,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:08:09,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:09,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:08:09,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:09,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:09,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:09,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:09,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:09,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:08:09,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:09,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:08:09,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:09,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:09,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:09,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:09,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:09,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:09,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:09,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:09,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:09,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:10,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:10,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:10,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:10,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:10,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:10,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:08:10,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:10,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:08:10,205 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:08:10,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:08:10,280 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:08:10,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:10,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:08:10,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289755029] [2021-03-11 16:08:10,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:08:10,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:08:10,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935954864] [2021-03-11 16:08:10,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:08:10,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:08:10,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:08:10,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:08:10,288 INFO L87 Difference]: Start difference. First operand 1361 states and 4233 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:08:12,870 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2021-03-11 16:08:17,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:08:17,028 INFO L93 Difference]: Finished difference Result 1921 states and 5947 transitions. [2021-03-11 16:08:17,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-11 16:08:17,031 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:08:17,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:08:17,035 INFO L225 Difference]: With dead ends: 1921 [2021-03-11 16:08:17,035 INFO L226 Difference]: Without dead ends: 1892 [2021-03-11 16:08:17,035 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 2721.3ms TimeCoverageRelationStatistics Valid=218, Invalid=1944, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 16:08:17,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2021-03-11 16:08:17,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1371. [2021-03-11 16:08:17,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1371 states, 1370 states have (on average 3.113138686131387) internal successors, (4265), 1370 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:08:17,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 4265 transitions. [2021-03-11 16:08:17,052 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 4265 transitions. Word has length 34 [2021-03-11 16:08:17,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:08:17,053 INFO L480 AbstractCegarLoop]: Abstraction has 1371 states and 4265 transitions. [2021-03-11 16:08:17,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:08:17,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 4265 transitions. [2021-03-11 16:08:17,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:08:17,054 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:08:17,054 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:08:17,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-03-11 16:08:17,054 INFO L428 AbstractCegarLoop]: === Iteration 153 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:08:17,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:08:17,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1662343624, now seen corresponding path program 153 times [2021-03-11 16:08:17,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:08:17,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879566720] [2021-03-11 16:08:17,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:08:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:08:17,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:17,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:08:17,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:17,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:08:17,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:17,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:08:17,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:17,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:17,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:17,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:17,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:17,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:08:17,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:17,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:08:17,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:17,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:17,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:17,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:17,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:17,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:17,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:17,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:17,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:17,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:17,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:17,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:17,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:17,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:17,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:17,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:08:17,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:17,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:08:17,759 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:08:17,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:08:17,830 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:08:17,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:17,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:08:17,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879566720] [2021-03-11 16:08:17,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:08:17,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:08:17,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597293046] [2021-03-11 16:08:17,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:08:17,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:08:17,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:08:17,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:08:17,839 INFO L87 Difference]: Start difference. First operand 1371 states and 4265 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:08:25,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:08:25,283 INFO L93 Difference]: Finished difference Result 1878 states and 5842 transitions. [2021-03-11 16:08:25,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-11 16:08:25,287 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:08:25,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:08:25,290 INFO L225 Difference]: With dead ends: 1878 [2021-03-11 16:08:25,290 INFO L226 Difference]: Without dead ends: 1831 [2021-03-11 16:08:25,290 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 2957.9ms TimeCoverageRelationStatistics Valid=232, Invalid=2218, Unknown=0, NotChecked=0, Total=2450 [2021-03-11 16:08:25,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2021-03-11 16:08:25,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1367. [2021-03-11 16:08:25,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 1366 states have (on average 3.11493411420205) internal successors, (4255), 1366 states have internal predecessors, (4255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:08:25,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 4255 transitions. [2021-03-11 16:08:25,307 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 4255 transitions. Word has length 34 [2021-03-11 16:08:25,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:08:25,308 INFO L480 AbstractCegarLoop]: Abstraction has 1367 states and 4255 transitions. [2021-03-11 16:08:25,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:08:25,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 4255 transitions. [2021-03-11 16:08:25,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:08:25,309 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:08:25,309 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:08:25,309 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-03-11 16:08:25,309 INFO L428 AbstractCegarLoop]: === Iteration 154 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:08:25,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:08:25,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1597210614, now seen corresponding path program 154 times [2021-03-11 16:08:25,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:08:25,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900599561] [2021-03-11 16:08:25,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:08:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:08:25,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:25,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:08:25,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:25,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:08:25,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:25,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:08:25,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:25,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:25,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:25,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:25,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:25,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:08:25,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:25,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:08:25,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:25,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:25,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:25,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:25,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:25,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:25,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:25,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:25,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:25,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:25,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:25,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:25,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:25,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:25,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:25,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:25,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:25,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:08:25,983 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:08:25,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:08:26,063 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:08:26,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:26,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:08:26,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900599561] [2021-03-11 16:08:26,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:08:26,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:08:26,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151914772] [2021-03-11 16:08:26,070 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:08:26,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:08:26,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:08:26,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:08:26,071 INFO L87 Difference]: Start difference. First operand 1367 states and 4255 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:08:33,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:08:33,580 INFO L93 Difference]: Finished difference Result 2009 states and 6244 transitions. [2021-03-11 16:08:33,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-11 16:08:33,584 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:08:33,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:08:33,587 INFO L225 Difference]: With dead ends: 2009 [2021-03-11 16:08:33,587 INFO L226 Difference]: Without dead ends: 1984 [2021-03-11 16:08:33,587 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 2938.1ms TimeCoverageRelationStatistics Valid=241, Invalid=2111, Unknown=0, NotChecked=0, Total=2352 [2021-03-11 16:08:33,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2021-03-11 16:08:33,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1373. [2021-03-11 16:08:33,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1372 states have (on average 3.1144314868804663) internal successors, (4273), 1372 states have internal predecessors, (4273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:08:33,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 4273 transitions. [2021-03-11 16:08:33,604 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 4273 transitions. Word has length 34 [2021-03-11 16:08:33,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:08:33,605 INFO L480 AbstractCegarLoop]: Abstraction has 1373 states and 4273 transitions. [2021-03-11 16:08:33,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:08:33,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 4273 transitions. [2021-03-11 16:08:33,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:08:33,606 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:08:33,606 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:08:33,606 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-03-11 16:08:33,606 INFO L428 AbstractCegarLoop]: === Iteration 155 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:08:33,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:08:33,606 INFO L82 PathProgramCache]: Analyzing trace with hash 776545344, now seen corresponding path program 155 times [2021-03-11 16:08:33,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:08:33,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804297] [2021-03-11 16:08:33,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:08:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:08:33,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:33,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:08:33,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:33,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:08:33,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:33,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:08:33,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:33,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:33,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:33,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:33,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:33,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:08:33,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:33,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:08:33,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:33,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:33,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:33,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:33,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:33,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:33,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:33,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:33,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:33,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:34,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:34,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:34,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:34,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:34,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:34,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:34,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:34,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:08:34,234 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:08:34,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:08:34,306 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:08:34,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:34,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:08:34,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804297] [2021-03-11 16:08:34,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:08:34,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:08:34,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103862867] [2021-03-11 16:08:34,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:08:34,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:08:34,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:08:34,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:08:34,313 INFO L87 Difference]: Start difference. First operand 1373 states and 4273 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:08:41,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:08:41,835 INFO L93 Difference]: Finished difference Result 1998 states and 6206 transitions. [2021-03-11 16:08:41,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-11 16:08:41,839 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:08:41,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:08:41,842 INFO L225 Difference]: With dead ends: 1998 [2021-03-11 16:08:41,843 INFO L226 Difference]: Without dead ends: 1959 [2021-03-11 16:08:41,843 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 2938.9ms TimeCoverageRelationStatistics Valid=237, Invalid=2115, Unknown=0, NotChecked=0, Total=2352 [2021-03-11 16:08:41,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2021-03-11 16:08:41,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1369. [2021-03-11 16:08:41,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1368 states have (on average 3.114766081871345) internal successors, (4261), 1368 states have internal predecessors, (4261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:08:41,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 4261 transitions. [2021-03-11 16:08:41,860 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 4261 transitions. Word has length 34 [2021-03-11 16:08:41,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:08:41,860 INFO L480 AbstractCegarLoop]: Abstraction has 1369 states and 4261 transitions. [2021-03-11 16:08:41,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:08:41,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 4261 transitions. [2021-03-11 16:08:41,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:08:41,862 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:08:41,862 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:08:41,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-03-11 16:08:41,862 INFO L428 AbstractCegarLoop]: === Iteration 156 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:08:41,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:08:41,863 INFO L82 PathProgramCache]: Analyzing trace with hash 84626296, now seen corresponding path program 156 times [2021-03-11 16:08:41,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:08:41,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825299128] [2021-03-11 16:08:41,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:08:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:08:41,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:41,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:08:41,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:41,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:08:41,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:41,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:08:41,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:41,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:42,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:42,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:42,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:42,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:08:42,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:42,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:08:42,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:42,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:42,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:42,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:42,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:42,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:42,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:42,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:42,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:42,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:42,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:42,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:42,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:42,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:42,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:42,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:42,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:42,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:08:42,607 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:08:42,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:08:42,686 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:08:42,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:42,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:08:42,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825299128] [2021-03-11 16:08:42,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:08:42,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:08:42,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167332448] [2021-03-11 16:08:42,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:08:42,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:08:42,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:08:42,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:08:42,695 INFO L87 Difference]: Start difference. First operand 1369 states and 4261 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:08:45,347 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2021-03-11 16:08:49,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:08:49,708 INFO L93 Difference]: Finished difference Result 1917 states and 5962 transitions. [2021-03-11 16:08:49,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-11 16:08:49,712 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:08:49,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:08:49,717 INFO L225 Difference]: With dead ends: 1917 [2021-03-11 16:08:49,717 INFO L226 Difference]: Without dead ends: 1892 [2021-03-11 16:08:49,717 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 3220.4ms TimeCoverageRelationStatistics Valid=261, Invalid=2189, Unknown=0, NotChecked=0, Total=2450 [2021-03-11 16:08:49,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2021-03-11 16:08:49,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1373. [2021-03-11 16:08:49,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1372 states have (on average 3.1144314868804663) internal successors, (4273), 1372 states have internal predecessors, (4273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:08:49,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 4273 transitions. [2021-03-11 16:08:49,741 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 4273 transitions. Word has length 34 [2021-03-11 16:08:49,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:08:49,742 INFO L480 AbstractCegarLoop]: Abstraction has 1373 states and 4273 transitions. [2021-03-11 16:08:49,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:08:49,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 4273 transitions. [2021-03-11 16:08:49,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:08:49,744 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:08:49,744 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:08:49,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-03-11 16:08:49,744 INFO L428 AbstractCegarLoop]: === Iteration 157 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:08:49,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:08:49,744 INFO L82 PathProgramCache]: Analyzing trace with hash 625107650, now seen corresponding path program 157 times [2021-03-11 16:08:49,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:08:49,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356426426] [2021-03-11 16:08:49,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:08:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:08:49,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:49,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:08:49,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:49,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:08:49,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:49,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:08:49,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:49,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:49,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:49,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:49,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:49,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:08:49,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:49,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:08:49,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:49,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:49,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:49,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:50,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:50,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:50,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:50,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:50,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:50,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:50,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:50,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:50,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:50,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:50,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:50,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:50,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:50,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:08:50,446 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:08:50,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:08:50,525 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:08:50,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:50,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:08:50,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356426426] [2021-03-11 16:08:50,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:08:50,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:08:50,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209537574] [2021-03-11 16:08:50,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:08:50,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:08:50,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:08:50,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:08:50,533 INFO L87 Difference]: Start difference. First operand 1373 states and 4273 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:08:57,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:08:57,342 INFO L93 Difference]: Finished difference Result 1921 states and 5961 transitions. [2021-03-11 16:08:57,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-11 16:08:57,345 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:08:57,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:08:57,348 INFO L225 Difference]: With dead ends: 1921 [2021-03-11 16:08:57,348 INFO L226 Difference]: Without dead ends: 1884 [2021-03-11 16:08:57,349 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 2826.5ms TimeCoverageRelationStatistics Valid=232, Invalid=1930, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 16:08:57,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2021-03-11 16:08:57,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1373. [2021-03-11 16:08:57,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1372 states have (on average 3.1129737609329444) internal successors, (4271), 1372 states have internal predecessors, (4271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:08:57,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 4271 transitions. [2021-03-11 16:08:57,364 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 4271 transitions. Word has length 34 [2021-03-11 16:08:57,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:08:57,364 INFO L480 AbstractCegarLoop]: Abstraction has 1373 states and 4271 transitions. [2021-03-11 16:08:57,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:08:57,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 4271 transitions. [2021-03-11 16:08:57,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:08:57,366 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:08:57,366 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:08:57,366 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-03-11 16:08:57,366 INFO L428 AbstractCegarLoop]: === Iteration 158 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:08:57,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:08:57,366 INFO L82 PathProgramCache]: Analyzing trace with hash 351598134, now seen corresponding path program 158 times [2021-03-11 16:08:57,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:08:57,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801341695] [2021-03-11 16:08:57,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:08:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:08:57,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:57,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:08:57,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:57,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:08:57,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:57,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:08:57,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:57,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:57,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:57,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:57,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:57,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:08:57,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:57,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:08:57,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:57,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:57,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:57,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:57,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:57,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:57,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:57,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:57,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:57,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:57,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:57,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:57,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:57,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:57,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:08:57,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:57,991 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 16:08:57,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:08:58,066 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:08:58,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:08:58,146 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:08:58,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:08:58,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:08:58,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801341695] [2021-03-11 16:08:58,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:08:58,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:08:58,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879799585] [2021-03-11 16:08:58,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:08:58,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:08:58,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:08:58,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:08:58,155 INFO L87 Difference]: Start difference. First operand 1373 states and 4271 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:09:01,797 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2021-03-11 16:09:05,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:09:05,964 INFO L93 Difference]: Finished difference Result 1969 states and 6154 transitions. [2021-03-11 16:09:05,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-03-11 16:09:05,966 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:09:05,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:09:05,970 INFO L225 Difference]: With dead ends: 1969 [2021-03-11 16:09:05,970 INFO L226 Difference]: Without dead ends: 1938 [2021-03-11 16:09:05,970 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 3582.7ms TimeCoverageRelationStatistics Valid=299, Invalid=2671, Unknown=0, NotChecked=0, Total=2970 [2021-03-11 16:09:05,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1938 states. [2021-03-11 16:09:05,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1938 to 1373. [2021-03-11 16:09:05,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1372 states have (on average 3.1129737609329444) internal successors, (4271), 1372 states have internal predecessors, (4271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:09:05,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 4271 transitions. [2021-03-11 16:09:05,998 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 4271 transitions. Word has length 34 [2021-03-11 16:09:05,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:09:05,998 INFO L480 AbstractCegarLoop]: Abstraction has 1373 states and 4271 transitions. [2021-03-11 16:09:05,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:09:05,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 4271 transitions. [2021-03-11 16:09:06,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:09:06,000 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:09:06,000 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:09:06,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-03-11 16:09:06,000 INFO L428 AbstractCegarLoop]: === Iteration 159 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:09:06,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:09:06,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1954959368, now seen corresponding path program 159 times [2021-03-11 16:09:06,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:09:06,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515959603] [2021-03-11 16:09:06,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:09:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:09:06,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:06,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:09:06,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:06,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:09:06,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:06,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:09:06,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:06,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:06,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:06,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:06,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:06,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:09:06,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:06,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:09:06,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:06,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:06,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:06,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:06,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:06,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:06,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:06,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:06,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:06,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:06,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:06,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:06,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:06,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:06,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:06,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:06,554 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 16:09:06,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:09:06,622 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:09:06,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:09:06,695 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:09:06,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:06,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:09:06,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515959603] [2021-03-11 16:09:06,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:09:06,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:09:06,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287520493] [2021-03-11 16:09:06,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:09:06,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:09:06,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:09:06,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:09:06,703 INFO L87 Difference]: Start difference. First operand 1373 states and 4271 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:09:14,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:09:14,510 INFO L93 Difference]: Finished difference Result 1953 states and 6114 transitions. [2021-03-11 16:09:14,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-11 16:09:14,513 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:09:14,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:09:14,516 INFO L225 Difference]: With dead ends: 1953 [2021-03-11 16:09:14,517 INFO L226 Difference]: Without dead ends: 1916 [2021-03-11 16:09:14,517 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 3150.6ms TimeCoverageRelationStatistics Valid=264, Invalid=2388, Unknown=0, NotChecked=0, Total=2652 [2021-03-11 16:09:14,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2021-03-11 16:09:14,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1371. [2021-03-11 16:09:14,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1371 states, 1370 states have (on average 3.113138686131387) internal successors, (4265), 1370 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:09:14,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 4265 transitions. [2021-03-11 16:09:14,533 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 4265 transitions. Word has length 34 [2021-03-11 16:09:14,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:09:14,533 INFO L480 AbstractCegarLoop]: Abstraction has 1371 states and 4265 transitions. [2021-03-11 16:09:14,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:09:14,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 4265 transitions. [2021-03-11 16:09:14,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:09:14,535 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:09:14,535 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:09:14,535 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-03-11 16:09:14,535 INFO L428 AbstractCegarLoop]: === Iteration 160 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:09:14,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:09:14,535 INFO L82 PathProgramCache]: Analyzing trace with hash -620421942, now seen corresponding path program 160 times [2021-03-11 16:09:14,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:09:14,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364734444] [2021-03-11 16:09:14,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:09:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:09:14,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:14,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:09:14,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:14,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:09:14,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:14,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:09:14,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:14,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:14,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:14,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:14,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:14,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:09:14,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:14,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:09:14,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:14,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:14,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:14,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:14,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:14,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:14,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:14,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:14,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:14,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:15,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:15,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:15,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:15,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:15,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:15,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:09:15,130 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:09:15,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:09:15,155 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:09:15,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:09:15,226 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:09:15,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:15,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:09:15,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364734444] [2021-03-11 16:09:15,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:09:15,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 16:09:15,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392373237] [2021-03-11 16:09:15,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 16:09:15,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:09:15,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 16:09:15,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-03-11 16:09:15,234 INFO L87 Difference]: Start difference. First operand 1371 states and 4265 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:09:20,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:09:20,915 INFO L93 Difference]: Finished difference Result 1799 states and 5604 transitions. [2021-03-11 16:09:20,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 16:09:20,918 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:09:20,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:09:20,921 INFO L225 Difference]: With dead ends: 1799 [2021-03-11 16:09:20,921 INFO L226 Difference]: Without dead ends: 1770 [2021-03-11 16:09:20,921 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 2473.5ms TimeCoverageRelationStatistics Valid=199, Invalid=1607, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 16:09:20,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2021-03-11 16:09:20,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1379. [2021-03-11 16:09:20,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 1378 states have (on average 3.113933236574746) internal successors, (4291), 1378 states have internal predecessors, (4291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:09:20,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 4291 transitions. [2021-03-11 16:09:20,936 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 4291 transitions. Word has length 34 [2021-03-11 16:09:20,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:09:20,936 INFO L480 AbstractCegarLoop]: Abstraction has 1379 states and 4291 transitions. [2021-03-11 16:09:20,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:09:20,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 4291 transitions. [2021-03-11 16:09:20,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:09:20,938 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:09:20,938 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:09:20,938 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-03-11 16:09:20,938 INFO L428 AbstractCegarLoop]: === Iteration 161 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:09:20,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:09:20,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1567761234, now seen corresponding path program 161 times [2021-03-11 16:09:20,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:09:20,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146290607] [2021-03-11 16:09:20,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:09:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:09:20,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:20,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:09:20,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:20,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:09:20,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:20,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:09:21,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:21,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:21,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:21,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:21,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:21,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:09:21,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:21,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:09:21,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:21,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:21,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:21,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:21,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:21,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:21,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:21,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:21,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:21,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:21,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:21,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:21,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:21,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:21,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:21,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:09:21,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:21,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:09:21,684 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:09:21,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:09:21,764 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:09:21,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:21,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:09:21,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146290607] [2021-03-11 16:09:21,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:09:21,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:09:21,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587228835] [2021-03-11 16:09:21,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:09:21,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:09:21,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:09:21,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:09:21,772 INFO L87 Difference]: Start difference. First operand 1379 states and 4291 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:09:28,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:09:28,498 INFO L93 Difference]: Finished difference Result 1855 states and 5737 transitions. [2021-03-11 16:09:28,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-11 16:09:28,502 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:09:28,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:09:28,505 INFO L225 Difference]: With dead ends: 1855 [2021-03-11 16:09:28,505 INFO L226 Difference]: Without dead ends: 1830 [2021-03-11 16:09:28,505 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 3049.2ms TimeCoverageRelationStatistics Valid=231, Invalid=2025, Unknown=0, NotChecked=0, Total=2256 [2021-03-11 16:09:28,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2021-03-11 16:09:28,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1371. [2021-03-11 16:09:28,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1371 states, 1370 states have (on average 3.113138686131387) internal successors, (4265), 1370 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:09:28,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 4265 transitions. [2021-03-11 16:09:28,521 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 4265 transitions. Word has length 34 [2021-03-11 16:09:28,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:09:28,522 INFO L480 AbstractCegarLoop]: Abstraction has 1371 states and 4265 transitions. [2021-03-11 16:09:28,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:09:28,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 4265 transitions. [2021-03-11 16:09:28,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:09:28,523 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:09:28,523 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:09:28,523 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-03-11 16:09:28,523 INFO L428 AbstractCegarLoop]: === Iteration 162 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:09:28,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:09:28,524 INFO L82 PathProgramCache]: Analyzing trace with hash 2108242588, now seen corresponding path program 162 times [2021-03-11 16:09:28,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:09:28,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789426115] [2021-03-11 16:09:28,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:09:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:09:28,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:28,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:09:28,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:28,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:09:28,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:28,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:09:28,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:28,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:28,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:28,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:28,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:28,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:09:28,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:28,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:09:28,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:28,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:28,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:28,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:28,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:28,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:28,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:28,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:28,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:28,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:28,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:28,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:28,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:28,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:29,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:29,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:09:29,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:29,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:09:29,158 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:09:29,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:09:29,238 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:09:29,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:29,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:09:29,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789426115] [2021-03-11 16:09:29,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:09:29,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:09:29,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351518474] [2021-03-11 16:09:29,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:09:29,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:09:29,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:09:29,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:09:29,247 INFO L87 Difference]: Start difference. First operand 1371 states and 4265 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:09:34,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:09:34,968 INFO L93 Difference]: Finished difference Result 1805 states and 5583 transitions. [2021-03-11 16:09:34,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 16:09:34,971 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:09:34,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:09:34,974 INFO L225 Difference]: With dead ends: 1805 [2021-03-11 16:09:34,974 INFO L226 Difference]: Without dead ends: 1754 [2021-03-11 16:09:34,975 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 2495.1ms TimeCoverageRelationStatistics Valid=192, Invalid=1700, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 16:09:34,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2021-03-11 16:09:34,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1367. [2021-03-11 16:09:34,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 1366 states have (on average 3.1134699853587118) internal successors, (4253), 1366 states have internal predecessors, (4253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:09:34,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 4253 transitions. [2021-03-11 16:09:34,990 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 4253 transitions. Word has length 34 [2021-03-11 16:09:34,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:09:34,990 INFO L480 AbstractCegarLoop]: Abstraction has 1367 states and 4253 transitions. [2021-03-11 16:09:34,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:09:34,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 4253 transitions. [2021-03-11 16:09:34,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:09:34,992 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:09:34,992 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:09:34,992 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-03-11 16:09:34,992 INFO L428 AbstractCegarLoop]: === Iteration 163 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:09:34,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:09:34,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1160341270, now seen corresponding path program 163 times [2021-03-11 16:09:34,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:09:34,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248745695] [2021-03-11 16:09:34,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:09:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:09:35,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:35,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:09:35,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:35,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:09:35,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:35,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:09:35,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:35,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:35,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:35,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:35,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:35,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:09:35,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:35,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:09:35,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:35,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:35,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:35,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:35,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:35,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:35,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:35,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:35,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:35,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:35,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:35,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:09:35,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:35,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:09:35,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:35,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:09:35,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:35,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:09:35,753 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:09:35,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:09:35,837 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:09:35,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:35,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:09:35,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248745695] [2021-03-11 16:09:35,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:09:35,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:09:35,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161876339] [2021-03-11 16:09:35,846 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:09:35,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:09:35,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:09:35,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:09:35,846 INFO L87 Difference]: Start difference. First operand 1367 states and 4253 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:09:41,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:09:41,965 INFO L93 Difference]: Finished difference Result 1713 states and 5312 transitions. [2021-03-11 16:09:41,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 16:09:41,968 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:09:41,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:09:41,972 INFO L225 Difference]: With dead ends: 1713 [2021-03-11 16:09:41,972 INFO L226 Difference]: Without dead ends: 1688 [2021-03-11 16:09:41,972 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 2783.1ms TimeCoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 16:09:41,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2021-03-11 16:09:41,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1375. [2021-03-11 16:09:41,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 1374 states have (on average 3.111353711790393) internal successors, (4275), 1374 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:09:41,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 4275 transitions. [2021-03-11 16:09:41,987 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 4275 transitions. Word has length 34 [2021-03-11 16:09:41,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:09:41,987 INFO L480 AbstractCegarLoop]: Abstraction has 1375 states and 4275 transitions. [2021-03-11 16:09:41,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:09:41,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 4275 transitions. [2021-03-11 16:09:41,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:09:41,989 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:09:41,989 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:09:41,989 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-03-11 16:09:41,989 INFO L428 AbstractCegarLoop]: === Iteration 164 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:09:41,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:09:41,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1700822624, now seen corresponding path program 164 times [2021-03-11 16:09:41,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:09:41,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815522477] [2021-03-11 16:09:41,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:09:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:09:42,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:42,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:09:42,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:42,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:09:42,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:42,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:09:42,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:42,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:42,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:42,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:42,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:42,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:09:42,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:42,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:09:42,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:42,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:42,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:42,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:42,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:42,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:42,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:42,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:42,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:42,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:42,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:42,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:09:42,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:42,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:09:42,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:42,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:09:42,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:42,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:09:42,774 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:09:42,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:09:42,860 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:09:42,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:42,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:09:42,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815522477] [2021-03-11 16:09:42,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:09:42,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:09:42,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173863659] [2021-03-11 16:09:42,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:09:42,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:09:42,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:09:42,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:09:42,869 INFO L87 Difference]: Start difference. First operand 1375 states and 4275 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:09:48,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:09:48,567 INFO L93 Difference]: Finished difference Result 1691 states and 5245 transitions. [2021-03-11 16:09:48,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-11 16:09:48,570 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:09:48,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:09:48,573 INFO L225 Difference]: With dead ends: 1691 [2021-03-11 16:09:48,573 INFO L226 Difference]: Without dead ends: 1658 [2021-03-11 16:09:48,573 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 2659.1ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 16:09:48,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2021-03-11 16:09:48,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1379. [2021-03-11 16:09:48,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 1378 states have (on average 3.108853410740203) internal successors, (4284), 1378 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:09:48,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 4284 transitions. [2021-03-11 16:09:48,589 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 4284 transitions. Word has length 34 [2021-03-11 16:09:48,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:09:48,589 INFO L480 AbstractCegarLoop]: Abstraction has 1379 states and 4284 transitions. [2021-03-11 16:09:48,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:09:48,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 4284 transitions. [2021-03-11 16:09:48,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:09:48,590 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:09:48,590 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:09:48,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-03-11 16:09:48,591 INFO L428 AbstractCegarLoop]: === Iteration 165 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:09:48,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:09:48,591 INFO L82 PathProgramCache]: Analyzing trace with hash -900250602, now seen corresponding path program 165 times [2021-03-11 16:09:48,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:09:48,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850503223] [2021-03-11 16:09:48,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:09:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:09:48,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:48,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:09:48,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:48,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:09:48,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:48,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:09:48,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:48,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:48,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:48,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:48,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:48,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:09:48,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:48,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:09:48,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:48,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:48,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:48,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:48,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:48,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:48,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:48,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:49,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:49,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:49,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:49,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:09:49,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:49,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:09:49,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:49,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:09:49,301 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:09:49,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:09:49,390 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:09:49,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:09:49,478 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:09:49,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:49,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:09:49,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850503223] [2021-03-11 16:09:49,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:09:49,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:09:49,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478707443] [2021-03-11 16:09:49,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:09:49,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:09:49,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:09:49,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:09:49,486 INFO L87 Difference]: Start difference. First operand 1379 states and 4284 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:09:54,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:09:54,898 INFO L93 Difference]: Finished difference Result 1657 states and 5155 transitions. [2021-03-11 16:09:54,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-11 16:09:54,902 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:09:54,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:09:54,904 INFO L225 Difference]: With dead ends: 1657 [2021-03-11 16:09:54,904 INFO L226 Difference]: Without dead ends: 1616 [2021-03-11 16:09:54,905 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 2622.1ms TimeCoverageRelationStatistics Valid=177, Invalid=1629, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 16:09:54,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2021-03-11 16:09:54,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1375. [2021-03-11 16:09:54,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 1374 states have (on average 3.10844250363901) internal successors, (4271), 1374 states have internal predecessors, (4271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:09:54,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 4271 transitions. [2021-03-11 16:09:54,920 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 4271 transitions. Word has length 34 [2021-03-11 16:09:54,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:09:54,920 INFO L480 AbstractCegarLoop]: Abstraction has 1375 states and 4271 transitions. [2021-03-11 16:09:54,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:09:54,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 4271 transitions. [2021-03-11 16:09:54,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:09:54,922 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:09:54,922 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:09:54,922 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-03-11 16:09:54,922 INFO L428 AbstractCegarLoop]: === Iteration 166 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:09:54,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:09:54,922 INFO L82 PathProgramCache]: Analyzing trace with hash 12393892, now seen corresponding path program 166 times [2021-03-11 16:09:54,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:09:54,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127681309] [2021-03-11 16:09:54,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:09:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:09:54,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:54,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:09:54,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:54,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:09:54,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:54,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:09:54,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:55,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:55,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:55,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:55,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:55,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:09:55,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:55,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:09:55,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:55,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:55,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:55,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:55,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:55,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:55,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:55,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:55,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:55,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:55,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:55,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:09:55,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:55,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:09:55,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:09:55,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:09:55,583 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:09:55,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:09:55,611 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:09:55,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:09:55,691 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:09:55,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:09:55,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:09:55,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127681309] [2021-03-11 16:09:55,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:09:55,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:09:55,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152896820] [2021-03-11 16:09:55,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:09:55,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:09:55,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:09:55,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:09:55,700 INFO L87 Difference]: Start difference. First operand 1375 states and 4271 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:01,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:10:01,288 INFO L93 Difference]: Finished difference Result 1681 states and 5207 transitions. [2021-03-11 16:10:01,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 16:10:01,292 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:10:01,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:10:01,295 INFO L225 Difference]: With dead ends: 1681 [2021-03-11 16:10:01,295 INFO L226 Difference]: Without dead ends: 1652 [2021-03-11 16:10:01,296 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 2493.1ms TimeCoverageRelationStatistics Valid=166, Invalid=1474, Unknown=0, NotChecked=0, Total=1640 [2021-03-11 16:10:01,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2021-03-11 16:10:01,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1399. [2021-03-11 16:10:01,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 1398 states have (on average 3.1108726752503575) internal successors, (4349), 1398 states have internal predecessors, (4349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:01,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 4349 transitions. [2021-03-11 16:10:01,311 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 4349 transitions. Word has length 34 [2021-03-11 16:10:01,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:10:01,312 INFO L480 AbstractCegarLoop]: Abstraction has 1399 states and 4349 transitions. [2021-03-11 16:10:01,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:01,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 4349 transitions. [2021-03-11 16:10:01,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:10:01,313 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:10:01,313 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:10:01,313 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-03-11 16:10:01,313 INFO L428 AbstractCegarLoop]: === Iteration 167 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:10:01,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:10:01,314 INFO L82 PathProgramCache]: Analyzing trace with hash -2094390228, now seen corresponding path program 167 times [2021-03-11 16:10:01,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:10:01,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788438450] [2021-03-11 16:10:01,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:10:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:10:01,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:01,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:10:01,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:01,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:10:01,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:01,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:10:01,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:01,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:01,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:01,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:01,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:01,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:10:01,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:01,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:10:01,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:01,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:01,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:01,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:01,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:01,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:01,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:01,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:01,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:01,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:01,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:01,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:01,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:01,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:02,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:02,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:02,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:02,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:02,256 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:10:02,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:10:02,371 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:10:02,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:02,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:10:02,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788438450] [2021-03-11 16:10:02,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:10:02,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:10:02,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628488206] [2021-03-11 16:10:02,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:10:02,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:10:02,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:10:02,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:10:02,380 INFO L87 Difference]: Start difference. First operand 1399 states and 4349 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:09,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:10:09,114 INFO L93 Difference]: Finished difference Result 1725 states and 5309 transitions. [2021-03-11 16:10:09,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 16:10:09,118 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:10:09,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:10:09,121 INFO L225 Difference]: With dead ends: 1725 [2021-03-11 16:10:09,121 INFO L226 Difference]: Without dead ends: 1700 [2021-03-11 16:10:09,121 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 3169.9ms TimeCoverageRelationStatistics Valid=190, Invalid=1790, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 16:10:09,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2021-03-11 16:10:09,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1383. [2021-03-11 16:10:09,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 1382 states have (on average 3.109261939218524) internal successors, (4297), 1382 states have internal predecessors, (4297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:09,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 4297 transitions. [2021-03-11 16:10:09,137 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 4297 transitions. Word has length 34 [2021-03-11 16:10:09,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:10:09,137 INFO L480 AbstractCegarLoop]: Abstraction has 1383 states and 4297 transitions. [2021-03-11 16:10:09,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:09,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 4297 transitions. [2021-03-11 16:10:09,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:10:09,138 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:10:09,138 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:10:09,138 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-03-11 16:10:09,138 INFO L428 AbstractCegarLoop]: === Iteration 168 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:10:09,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:10:09,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1553908874, now seen corresponding path program 168 times [2021-03-11 16:10:09,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:10:09,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962507040] [2021-03-11 16:10:09,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:10:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:10:09,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:09,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:10:09,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:09,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:10:09,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:09,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:10:09,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:09,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:09,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:09,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:09,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:09,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:10:09,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:09,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:10:09,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:09,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:09,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:09,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:09,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:09,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:09,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:09,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:09,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:09,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:09,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:09,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:09,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:09,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:09,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:09,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:09,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:09,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:09,958 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:10:09,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:10:10,057 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:10:10,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:10,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:10:10,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962507040] [2021-03-11 16:10:10,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:10:10,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:10:10,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898425434] [2021-03-11 16:10:10,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:10:10,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:10:10,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:10:10,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:10:10,067 INFO L87 Difference]: Start difference. First operand 1383 states and 4297 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:16,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:10:16,253 INFO L93 Difference]: Finished difference Result 1691 states and 5209 transitions. [2021-03-11 16:10:16,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 16:10:16,256 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:10:16,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:10:16,259 INFO L225 Difference]: With dead ends: 1691 [2021-03-11 16:10:16,259 INFO L226 Difference]: Without dead ends: 1632 [2021-03-11 16:10:16,259 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 2822.4ms TimeCoverageRelationStatistics Valid=172, Invalid=1634, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 16:10:16,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2021-03-11 16:10:16,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1361. [2021-03-11 16:10:16,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1360 states have (on average 3.116911764705882) internal successors, (4239), 1360 states have internal predecessors, (4239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:16,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 4239 transitions. [2021-03-11 16:10:16,278 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 4239 transitions. Word has length 34 [2021-03-11 16:10:16,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:10:16,279 INFO L480 AbstractCegarLoop]: Abstraction has 1361 states and 4239 transitions. [2021-03-11 16:10:16,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:16,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 4239 transitions. [2021-03-11 16:10:16,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:10:16,281 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:10:16,281 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:10:16,281 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-03-11 16:10:16,281 INFO L428 AbstractCegarLoop]: === Iteration 169 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:10:16,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:10:16,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1028786380, now seen corresponding path program 169 times [2021-03-11 16:10:16,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:10:16,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654139863] [2021-03-11 16:10:16,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:10:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:10:16,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:16,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:10:16,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:16,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:10:16,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:16,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:10:16,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:16,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:16,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:16,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:16,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:16,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:10:16,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:16,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:10:16,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:16,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:16,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:16,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:16,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:16,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:16,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:16,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:16,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:16,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:16,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:16,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:16,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:16,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:16,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:16,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:17,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:17,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:17,158 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:10:17,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:10:17,260 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:10:17,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:17,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:10:17,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654139863] [2021-03-11 16:10:17,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:10:17,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:10:17,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358619338] [2021-03-11 16:10:17,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:10:17,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:10:17,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:10:17,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:10:17,270 INFO L87 Difference]: Start difference. First operand 1361 states and 4239 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:24,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:10:24,274 INFO L93 Difference]: Finished difference Result 1723 states and 5341 transitions. [2021-03-11 16:10:24,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-11 16:10:24,278 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:10:24,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:10:24,281 INFO L225 Difference]: With dead ends: 1723 [2021-03-11 16:10:24,281 INFO L226 Difference]: Without dead ends: 1698 [2021-03-11 16:10:24,281 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 3358.6ms TimeCoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2021-03-11 16:10:24,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2021-03-11 16:10:24,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1370. [2021-03-11 16:10:24,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.1139517896274653) internal successors, (4263), 1369 states have internal predecessors, (4263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:24,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 4263 transitions. [2021-03-11 16:10:24,297 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 4263 transitions. Word has length 34 [2021-03-11 16:10:24,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:10:24,297 INFO L480 AbstractCegarLoop]: Abstraction has 1370 states and 4263 transitions. [2021-03-11 16:10:24,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:24,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 4263 transitions. [2021-03-11 16:10:24,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:10:24,298 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:10:24,298 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:10:24,298 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-03-11 16:10:24,298 INFO L428 AbstractCegarLoop]: === Iteration 170 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:10:24,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:10:24,299 INFO L82 PathProgramCache]: Analyzing trace with hash 524387506, now seen corresponding path program 170 times [2021-03-11 16:10:24,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:10:24,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052689769] [2021-03-11 16:10:24,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:10:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:10:24,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:24,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:10:24,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:24,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:10:24,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:24,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:10:24,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:24,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:24,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:24,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:24,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:24,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:10:24,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:24,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:10:24,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:24,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:24,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:24,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:24,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:24,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:24,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:24,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:24,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:24,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:24,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:24,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:24,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:24,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:24,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:24,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:25,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:25,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:25,128 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:10:25,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:10:25,215 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:10:25,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:25,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:10:25,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052689769] [2021-03-11 16:10:25,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:10:25,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:10:25,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787205424] [2021-03-11 16:10:25,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:10:25,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:10:25,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:10:25,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:10:25,223 INFO L87 Difference]: Start difference. First operand 1370 states and 4263 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:30,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:10:30,540 INFO L93 Difference]: Finished difference Result 1700 states and 5271 transitions. [2021-03-11 16:10:30,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 16:10:30,544 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:10:30,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:10:30,547 INFO L225 Difference]: With dead ends: 1700 [2021-03-11 16:10:30,547 INFO L226 Difference]: Without dead ends: 1667 [2021-03-11 16:10:30,547 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 2828.1ms TimeCoverageRelationStatistics Valid=202, Invalid=1778, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 16:10:30,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2021-03-11 16:10:30,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1374. [2021-03-11 16:10:30,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1374 states, 1373 states have (on average 3.1114348142753094) internal successors, (4272), 1373 states have internal predecessors, (4272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:30,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 4272 transitions. [2021-03-11 16:10:30,561 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 4272 transitions. Word has length 34 [2021-03-11 16:10:30,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:10:30,561 INFO L480 AbstractCegarLoop]: Abstraction has 1374 states and 4272 transitions. [2021-03-11 16:10:30,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:30,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 4272 transitions. [2021-03-11 16:10:30,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:10:30,563 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:10:30,563 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:10:30,563 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-03-11 16:10:30,563 INFO L428 AbstractCegarLoop]: === Iteration 171 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:10:30,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:10:30,563 INFO L82 PathProgramCache]: Analyzing trace with hash -902425818, now seen corresponding path program 171 times [2021-03-11 16:10:30,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:10:30,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170258685] [2021-03-11 16:10:30,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:10:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:10:30,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:30,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:10:30,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:30,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:10:30,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:30,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:10:30,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:30,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:30,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:30,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:30,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:30,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:10:30,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:30,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:10:30,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:30,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:30,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:30,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:30,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:30,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:30,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:30,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:30,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:30,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:31,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:31,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:31,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:31,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:31,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:31,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:31,269 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:10:31,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:10:31,343 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:10:31,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:10:31,429 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:10:31,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:31,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:10:31,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170258685] [2021-03-11 16:10:31,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:10:31,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:10:31,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704655869] [2021-03-11 16:10:31,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:10:31,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:10:31,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:10:31,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:10:31,437 INFO L87 Difference]: Start difference. First operand 1374 states and 4272 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:37,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:10:37,182 INFO L93 Difference]: Finished difference Result 1682 states and 5219 transitions. [2021-03-11 16:10:37,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 16:10:37,185 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:10:37,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:10:37,188 INFO L225 Difference]: With dead ends: 1682 [2021-03-11 16:10:37,188 INFO L226 Difference]: Without dead ends: 1641 [2021-03-11 16:10:37,188 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 2813.0ms TimeCoverageRelationStatistics Valid=203, Invalid=1867, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 16:10:37,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2021-03-11 16:10:37,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1370. [2021-03-11 16:10:37,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.111029948867787) internal successors, (4259), 1369 states have internal predecessors, (4259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:37,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 4259 transitions. [2021-03-11 16:10:37,204 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 4259 transitions. Word has length 34 [2021-03-11 16:10:37,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:10:37,204 INFO L480 AbstractCegarLoop]: Abstraction has 1370 states and 4259 transitions. [2021-03-11 16:10:37,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:37,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 4259 transitions. [2021-03-11 16:10:37,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:10:37,206 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:10:37,206 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:10:37,206 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-03-11 16:10:37,206 INFO L428 AbstractCegarLoop]: === Iteration 172 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:10:37,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:10:37,206 INFO L82 PathProgramCache]: Analyzing trace with hash 2039550566, now seen corresponding path program 172 times [2021-03-11 16:10:37,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:10:37,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057558269] [2021-03-11 16:10:37,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:10:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:10:37,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:37,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:10:37,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:37,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:10:37,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:37,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:10:37,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:37,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:37,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:37,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:37,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:37,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:10:37,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:37,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:10:37,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:37,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:37,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:37,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:37,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:37,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:37,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:37,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:37,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:37,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:37,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:37,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:37,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:37,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:37,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:37,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:37,914 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:10:37,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:10:37,946 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:10:37,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:10:38,024 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:10:38,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:38,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:10:38,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057558269] [2021-03-11 16:10:38,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:10:38,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:10:38,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881187500] [2021-03-11 16:10:38,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:10:38,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:10:38,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:10:38,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:10:38,042 INFO L87 Difference]: Start difference. First operand 1370 states and 4259 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:43,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:10:43,743 INFO L93 Difference]: Finished difference Result 1682 states and 5211 transitions. [2021-03-11 16:10:43,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 16:10:43,746 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:10:43,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:10:43,749 INFO L225 Difference]: With dead ends: 1682 [2021-03-11 16:10:43,749 INFO L226 Difference]: Without dead ends: 1653 [2021-03-11 16:10:43,749 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 2626.9ms TimeCoverageRelationStatistics Valid=181, Invalid=1541, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 16:10:43,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2021-03-11 16:10:43,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1397. [2021-03-11 16:10:43,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1396 states have (on average 3.1131805157593124) internal successors, (4346), 1396 states have internal predecessors, (4346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:43,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 4346 transitions. [2021-03-11 16:10:43,771 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 4346 transitions. Word has length 34 [2021-03-11 16:10:43,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:10:43,771 INFO L480 AbstractCegarLoop]: Abstraction has 1397 states and 4346 transitions. [2021-03-11 16:10:43,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:43,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 4346 transitions. [2021-03-11 16:10:43,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:10:43,773 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:10:43,773 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:10:43,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-03-11 16:10:43,773 INFO L428 AbstractCegarLoop]: === Iteration 173 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:10:43,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:10:43,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1153752286, now seen corresponding path program 173 times [2021-03-11 16:10:43,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:10:43,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230198346] [2021-03-11 16:10:43,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:10:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:10:43,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:43,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:10:43,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:43,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:10:43,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:43,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:10:43,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:43,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:43,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:43,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:43,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:43,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:10:43,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:43,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:10:43,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:43,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:44,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:44,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:44,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:44,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:44,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:44,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:44,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:44,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:44,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:44,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:44,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:44,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:44,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:44,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:44,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:44,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:44,572 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:10:44,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:10:44,654 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:10:44,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:44,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:10:44,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230198346] [2021-03-11 16:10:44,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:10:44,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:10:44,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906064663] [2021-03-11 16:10:44,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:10:44,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:10:44,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:10:44,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:10:44,663 INFO L87 Difference]: Start difference. First operand 1397 states and 4346 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:50,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:10:50,864 INFO L93 Difference]: Finished difference Result 1726 states and 5313 transitions. [2021-03-11 16:10:50,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-11 16:10:50,868 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:10:50,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:10:50,870 INFO L225 Difference]: With dead ends: 1726 [2021-03-11 16:10:50,870 INFO L226 Difference]: Without dead ends: 1701 [2021-03-11 16:10:50,871 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 2915.0ms TimeCoverageRelationStatistics Valid=205, Invalid=1865, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 16:10:50,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2021-03-11 16:10:50,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1381. [2021-03-11 16:10:50,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1380 states have (on average 3.1115942028985506) internal successors, (4294), 1380 states have internal predecessors, (4294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:50,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 4294 transitions. [2021-03-11 16:10:50,885 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 4294 transitions. Word has length 34 [2021-03-11 16:10:50,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:10:50,886 INFO L480 AbstractCegarLoop]: Abstraction has 1381 states and 4294 transitions. [2021-03-11 16:10:50,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:50,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 4294 transitions. [2021-03-11 16:10:50,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:10:50,887 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:10:50,887 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:10:50,887 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-03-11 16:10:50,887 INFO L428 AbstractCegarLoop]: === Iteration 174 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:10:50,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:10:50,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1588041124, now seen corresponding path program 174 times [2021-03-11 16:10:50,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:10:50,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770046633] [2021-03-11 16:10:50,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:10:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:10:50,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:50,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:10:50,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:50,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:10:50,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:50,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:10:50,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:50,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:50,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:51,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:51,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:51,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:10:51,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:51,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:10:51,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:51,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:51,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:51,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:51,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:51,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:51,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:51,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:51,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:51,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:51,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:51,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:51,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:51,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:51,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:51,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:51,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:51,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:51,676 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:10:51,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:10:51,758 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:10:51,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:51,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:10:51,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770046633] [2021-03-11 16:10:51,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:10:51,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:10:51,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181335719] [2021-03-11 16:10:51,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:10:51,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:10:51,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:10:51,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:10:51,767 INFO L87 Difference]: Start difference. First operand 1381 states and 4294 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:57,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:10:57,432 INFO L93 Difference]: Finished difference Result 1692 states and 5213 transitions. [2021-03-11 16:10:57,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 16:10:57,436 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:10:57,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:10:57,439 INFO L225 Difference]: With dead ends: 1692 [2021-03-11 16:10:57,439 INFO L226 Difference]: Without dead ends: 1639 [2021-03-11 16:10:57,439 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 2688.5ms TimeCoverageRelationStatistics Valid=187, Invalid=1705, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 16:10:57,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-03-11 16:10:57,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1365. [2021-03-11 16:10:57,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1364 states have (on average 3.115102639296188) internal successors, (4249), 1364 states have internal predecessors, (4249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:57,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 4249 transitions. [2021-03-11 16:10:57,453 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 4249 transitions. Word has length 34 [2021-03-11 16:10:57,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:10:57,453 INFO L480 AbstractCegarLoop]: Abstraction has 1365 states and 4249 transitions. [2021-03-11 16:10:57,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:10:57,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 4249 transitions. [2021-03-11 16:10:57,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:10:57,455 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:10:57,455 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:10:57,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-03-11 16:10:57,455 INFO L428 AbstractCegarLoop]: === Iteration 175 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:10:57,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:10:57,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1566279236, now seen corresponding path program 175 times [2021-03-11 16:10:57,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:10:57,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272018302] [2021-03-11 16:10:57,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:10:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:10:57,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:57,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:10:57,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:57,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:10:57,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:57,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:10:57,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:57,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:57,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:57,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:57,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:57,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:10:57,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:57,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:10:57,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:57,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:57,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:57,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:57,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:57,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:57,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:57,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:57,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:57,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:57,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:57,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:57,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:57,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:58,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:58,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:58,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:10:58,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:10:58,215 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:10:58,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:10:58,296 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:10:58,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:10:58,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:10:58,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272018302] [2021-03-11 16:10:58,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:10:58,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:10:58,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278388181] [2021-03-11 16:10:58,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:10:58,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:10:58,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:10:58,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:10:58,304 INFO L87 Difference]: Start difference. First operand 1365 states and 4249 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:11:05,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:11:05,217 INFO L93 Difference]: Finished difference Result 1700 states and 5264 transitions. [2021-03-11 16:11:05,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-11 16:11:05,221 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:11:05,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:11:05,224 INFO L225 Difference]: With dead ends: 1700 [2021-03-11 16:11:05,224 INFO L226 Difference]: Without dead ends: 1675 [2021-03-11 16:11:05,225 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 3105.9ms TimeCoverageRelationStatistics Valid=220, Invalid=2132, Unknown=0, NotChecked=0, Total=2352 [2021-03-11 16:11:05,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2021-03-11 16:11:05,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1370. [2021-03-11 16:11:05,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.1154127100073046) internal successors, (4265), 1369 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:11:05,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 4265 transitions. [2021-03-11 16:11:05,239 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 4265 transitions. Word has length 34 [2021-03-11 16:11:05,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:11:05,239 INFO L480 AbstractCegarLoop]: Abstraction has 1370 states and 4265 transitions. [2021-03-11 16:11:05,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:11:05,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 4265 transitions. [2021-03-11 16:11:05,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:11:05,241 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:11:05,241 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:11:05,241 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-03-11 16:11:05,241 INFO L428 AbstractCegarLoop]: === Iteration 176 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:11:05,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:11:05,241 INFO L82 PathProgramCache]: Analyzing trace with hash -13105350, now seen corresponding path program 176 times [2021-03-11 16:11:05,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:11:05,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512528350] [2021-03-11 16:11:05,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:11:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:11:05,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:05,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:11:05,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:05,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:11:05,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:05,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:11:05,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:05,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:05,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:05,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:05,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:05,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:11:05,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:05,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:11:05,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:05,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:05,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:05,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:05,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:05,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:05,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:05,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:05,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:05,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:05,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:05,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:05,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:05,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:05,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:05,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:05,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:05,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:06,030 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:11:06,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:11:06,118 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:11:06,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:06,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:11:06,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512528350] [2021-03-11 16:11:06,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:11:06,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:11:06,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384931907] [2021-03-11 16:11:06,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:11:06,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:11:06,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:11:06,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:11:06,127 INFO L87 Difference]: Start difference. First operand 1370 states and 4265 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:11:11,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:11:11,670 INFO L93 Difference]: Finished difference Result 1677 states and 5194 transitions. [2021-03-11 16:11:11,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-11 16:11:11,673 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:11:11,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:11:11,676 INFO L225 Difference]: With dead ends: 1677 [2021-03-11 16:11:11,676 INFO L226 Difference]: Without dead ends: 1644 [2021-03-11 16:11:11,676 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 2710.0ms TimeCoverageRelationStatistics Valid=193, Invalid=1787, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 16:11:11,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2021-03-11 16:11:11,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1374. [2021-03-11 16:11:11,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1374 states, 1373 states have (on average 3.1128914785142023) internal successors, (4274), 1373 states have internal predecessors, (4274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:11:11,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 4274 transitions. [2021-03-11 16:11:11,690 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 4274 transitions. Word has length 34 [2021-03-11 16:11:11,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:11:11,690 INFO L480 AbstractCegarLoop]: Abstraction has 1374 states and 4274 transitions. [2021-03-11 16:11:11,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:11:11,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 4274 transitions. [2021-03-11 16:11:11,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:11:11,691 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:11:11,691 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:11:11,691 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-03-11 16:11:11,691 INFO L428 AbstractCegarLoop]: === Iteration 177 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:11:11,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:11:11,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1439918674, now seen corresponding path program 177 times [2021-03-11 16:11:11,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:11:11,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714814961] [2021-03-11 16:11:11,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:11:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:11:11,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:11,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:11:11,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:11,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:11:11,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:11,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:11:11,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:11,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:11,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:11,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:11,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:11,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:11:11,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:11,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:11:11,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:11,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:11,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:11,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:11,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:11,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:12,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:12,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:12,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:12,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:12,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:12,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:12,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:12,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:12,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:12,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:12,393 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:11:12,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:11:12,467 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:11:12,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:11:12,555 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:11:12,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:12,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:11:12,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714814961] [2021-03-11 16:11:12,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:11:12,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:11:12,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793351548] [2021-03-11 16:11:12,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:11:12,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:11:12,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:11:12,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:11:12,564 INFO L87 Difference]: Start difference. First operand 1374 states and 4274 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:11:18,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:11:18,603 INFO L93 Difference]: Finished difference Result 1654 states and 5127 transitions. [2021-03-11 16:11:18,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-11 16:11:18,607 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:11:18,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:11:18,609 INFO L225 Difference]: With dead ends: 1654 [2021-03-11 16:11:18,609 INFO L226 Difference]: Without dead ends: 1613 [2021-03-11 16:11:18,610 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 2815.9ms TimeCoverageRelationStatistics Valid=195, Invalid=1875, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 16:11:18,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2021-03-11 16:11:18,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1370. [2021-03-11 16:11:18,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.112490869247626) internal successors, (4261), 1369 states have internal predecessors, (4261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:11:18,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 4261 transitions. [2021-03-11 16:11:18,623 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 4261 transitions. Word has length 34 [2021-03-11 16:11:18,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:11:18,623 INFO L480 AbstractCegarLoop]: Abstraction has 1370 states and 4261 transitions. [2021-03-11 16:11:18,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:11:18,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 4261 transitions. [2021-03-11 16:11:18,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:11:18,625 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:11:18,625 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:11:18,625 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-03-11 16:11:18,625 INFO L428 AbstractCegarLoop]: === Iteration 178 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:11:18,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:11:18,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1502057710, now seen corresponding path program 178 times [2021-03-11 16:11:18,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:11:18,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994993529] [2021-03-11 16:11:18,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:11:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:11:18,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:18,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:11:18,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:18,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:11:18,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:18,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:11:18,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:18,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:18,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:18,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:18,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:18,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:11:18,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:18,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:11:18,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:18,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:18,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:18,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:18,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:18,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:18,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:18,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:19,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:19,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:19,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:19,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:19,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:19,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:19,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:19,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:19,324 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:11:19,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:11:19,351 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:11:19,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:11:19,437 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:11:19,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:19,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:11:19,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994993529] [2021-03-11 16:11:19,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:11:19,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:11:19,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054817423] [2021-03-11 16:11:19,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:11:19,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:11:19,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:11:19,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:11:19,446 INFO L87 Difference]: Start difference. First operand 1370 states and 4261 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:11:25,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:11:25,343 INFO L93 Difference]: Finished difference Result 1679 states and 5195 transitions. [2021-03-11 16:11:25,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 16:11:25,346 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:11:25,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:11:25,349 INFO L225 Difference]: With dead ends: 1679 [2021-03-11 16:11:25,349 INFO L226 Difference]: Without dead ends: 1650 [2021-03-11 16:11:25,349 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 2649.0ms TimeCoverageRelationStatistics Valid=175, Invalid=1547, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 16:11:25,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2021-03-11 16:11:25,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1389. [2021-03-11 16:11:25,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 1388 states have (on average 3.1138328530259365) internal successors, (4322), 1388 states have internal predecessors, (4322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:11:25,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 4322 transitions. [2021-03-11 16:11:25,364 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 4322 transitions. Word has length 34 [2021-03-11 16:11:25,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:11:25,364 INFO L480 AbstractCegarLoop]: Abstraction has 1389 states and 4322 transitions. [2021-03-11 16:11:25,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:11:25,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 4322 transitions. [2021-03-11 16:11:25,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:11:25,365 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:11:25,365 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:11:25,365 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-03-11 16:11:25,365 INFO L428 AbstractCegarLoop]: === Iteration 179 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:11:25,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:11:25,366 INFO L82 PathProgramCache]: Analyzing trace with hash 616259430, now seen corresponding path program 179 times [2021-03-11 16:11:25,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:11:25,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619076247] [2021-03-11 16:11:25,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:11:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:11:25,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:25,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:11:25,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:25,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:11:25,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:25,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:11:25,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:25,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:25,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:25,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:25,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:25,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:11:25,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:25,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:11:25,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:25,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:25,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:25,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:25,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:25,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:25,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:25,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:25,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:25,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:25,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:25,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:25,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:25,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:26,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:26,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:26,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:26,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:26,192 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:11:26,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:11:26,279 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:11:26,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:26,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:11:26,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619076247] [2021-03-11 16:11:26,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:11:26,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:11:26,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844289549] [2021-03-11 16:11:26,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:11:26,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:11:26,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:11:26,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:11:26,288 INFO L87 Difference]: Start difference. First operand 1389 states and 4322 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:11:32,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:11:32,724 INFO L93 Difference]: Finished difference Result 1731 states and 5319 transitions. [2021-03-11 16:11:32,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-11 16:11:32,728 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:11:32,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:11:32,730 INFO L225 Difference]: With dead ends: 1731 [2021-03-11 16:11:32,730 INFO L226 Difference]: Without dead ends: 1706 [2021-03-11 16:11:32,731 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 3018.8ms TimeCoverageRelationStatistics Valid=199, Invalid=1871, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 16:11:32,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2021-03-11 16:11:32,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1373. [2021-03-11 16:11:32,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1372 states have (on average 3.1122448979591835) internal successors, (4270), 1372 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:11:32,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 4270 transitions. [2021-03-11 16:11:32,745 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 4270 transitions. Word has length 34 [2021-03-11 16:11:32,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:11:32,745 INFO L480 AbstractCegarLoop]: Abstraction has 1373 states and 4270 transitions. [2021-03-11 16:11:32,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:11:32,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 4270 transitions. [2021-03-11 16:11:32,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:11:32,747 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:11:32,747 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:11:32,747 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-03-11 16:11:32,747 INFO L428 AbstractCegarLoop]: === Iteration 180 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:11:32,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:11:32,747 INFO L82 PathProgramCache]: Analyzing trace with hash -2125533980, now seen corresponding path program 180 times [2021-03-11 16:11:32,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:11:32,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259166002] [2021-03-11 16:11:32,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:11:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:11:32,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:32,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:11:32,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:32,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:11:32,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:32,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:11:32,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:32,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:32,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:32,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:32,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:32,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:11:32,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:32,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:11:32,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:32,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:33,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:33,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:33,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:33,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:33,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:33,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:33,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:33,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:33,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:33,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:33,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:33,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:33,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:33,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:33,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:33,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:33,566 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:11:33,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:11:33,657 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:11:33,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:33,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:11:33,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259166002] [2021-03-11 16:11:33,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:11:33,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:11:33,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747043998] [2021-03-11 16:11:33,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:11:33,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:11:33,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:11:33,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:11:33,666 INFO L87 Difference]: Start difference. First operand 1373 states and 4270 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:11:39,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:11:39,544 INFO L93 Difference]: Finished difference Result 1697 states and 5219 transitions. [2021-03-11 16:11:39,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 16:11:39,547 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:11:39,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:11:39,549 INFO L225 Difference]: With dead ends: 1697 [2021-03-11 16:11:39,550 INFO L226 Difference]: Without dead ends: 1648 [2021-03-11 16:11:39,550 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2771.5ms TimeCoverageRelationStatistics Valid=181, Invalid=1711, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 16:11:39,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2021-03-11 16:11:39,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1369. [2021-03-11 16:11:39,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1368 states have (on average 3.1140350877192984) internal successors, (4260), 1368 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:11:39,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 4260 transitions. [2021-03-11 16:11:39,564 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 4260 transitions. Word has length 34 [2021-03-11 16:11:39,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:11:39,564 INFO L480 AbstractCegarLoop]: Abstraction has 1369 states and 4260 transitions. [2021-03-11 16:11:39,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:11:39,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 4260 transitions. [2021-03-11 16:11:39,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:11:39,565 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:11:39,565 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:11:39,565 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-03-11 16:11:39,565 INFO L428 AbstractCegarLoop]: === Iteration 181 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:11:39,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:11:39,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1990590472, now seen corresponding path program 181 times [2021-03-11 16:11:39,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:11:39,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914607983] [2021-03-11 16:11:39,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:11:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:11:39,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:39,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:11:39,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:39,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:11:39,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:39,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:11:39,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:39,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:39,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:39,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:39,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:39,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:11:39,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:39,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:11:39,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:39,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:39,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:39,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:39,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:39,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:39,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:39,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:39,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:39,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:40,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:40,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:40,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:40,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:40,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:40,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:40,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:40,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:40,362 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:11:40,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:11:40,448 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:11:40,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:40,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:11:40,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914607983] [2021-03-11 16:11:40,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:11:40,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:11:40,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935829647] [2021-03-11 16:11:40,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:11:40,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:11:40,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:11:40,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:11:40,456 INFO L87 Difference]: Start difference. First operand 1369 states and 4260 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:11:47,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:11:47,505 INFO L93 Difference]: Finished difference Result 1708 states and 5279 transitions. [2021-03-11 16:11:47,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-11 16:11:47,509 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:11:47,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:11:47,512 INFO L225 Difference]: With dead ends: 1708 [2021-03-11 16:11:47,512 INFO L226 Difference]: Without dead ends: 1683 [2021-03-11 16:11:47,512 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 3402.2ms TimeCoverageRelationStatistics Valid=233, Invalid=2317, Unknown=0, NotChecked=0, Total=2550 [2021-03-11 16:11:47,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2021-03-11 16:11:47,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1370. [2021-03-11 16:11:47,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.1139517896274653) internal successors, (4263), 1369 states have internal predecessors, (4263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:11:47,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 4263 transitions. [2021-03-11 16:11:47,527 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 4263 transitions. Word has length 34 [2021-03-11 16:11:47,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:11:47,527 INFO L480 AbstractCegarLoop]: Abstraction has 1370 states and 4263 transitions. [2021-03-11 16:11:47,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:11:47,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 4263 transitions. [2021-03-11 16:11:47,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:11:47,528 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:11:47,528 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:11:47,528 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-03-11 16:11:47,528 INFO L428 AbstractCegarLoop]: === Iteration 182 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:11:47,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:11:47,529 INFO L82 PathProgramCache]: Analyzing trace with hash -437416586, now seen corresponding path program 182 times [2021-03-11 16:11:47,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:11:47,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944024309] [2021-03-11 16:11:47,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:11:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:11:47,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:47,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:11:47,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:47,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:11:47,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:47,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:11:47,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:47,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:47,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:47,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:47,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:47,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:11:47,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:47,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:11:47,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:47,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:47,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:47,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:47,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:47,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:47,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:47,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:47,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:47,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:48,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:48,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:48,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:48,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:48,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:48,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:48,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:48,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:48,337 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:11:48,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:11:48,425 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:11:48,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:48,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:11:48,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944024309] [2021-03-11 16:11:48,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:11:48,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:11:48,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249089984] [2021-03-11 16:11:48,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:11:48,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:11:48,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:11:48,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:11:48,433 INFO L87 Difference]: Start difference. First operand 1370 states and 4263 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:11:54,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:11:54,027 INFO L93 Difference]: Finished difference Result 1685 states and 5209 transitions. [2021-03-11 16:11:54,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-11 16:11:54,031 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:11:54,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:11:54,034 INFO L225 Difference]: With dead ends: 1685 [2021-03-11 16:11:54,034 INFO L226 Difference]: Without dead ends: 1652 [2021-03-11 16:11:54,034 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 2971.2ms TimeCoverageRelationStatistics Valid=205, Invalid=1865, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 16:11:54,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2021-03-11 16:11:54,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1374. [2021-03-11 16:11:54,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1374 states, 1373 states have (on average 3.1114348142753094) internal successors, (4272), 1373 states have internal predecessors, (4272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:11:54,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 4272 transitions. [2021-03-11 16:11:54,048 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 4272 transitions. Word has length 34 [2021-03-11 16:11:54,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:11:54,048 INFO L480 AbstractCegarLoop]: Abstraction has 1374 states and 4272 transitions. [2021-03-11 16:11:54,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:11:54,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 4272 transitions. [2021-03-11 16:11:54,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:11:54,050 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:11:54,050 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:11:54,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-03-11 16:11:54,050 INFO L428 AbstractCegarLoop]: === Iteration 183 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:11:54,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:11:54,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1864229910, now seen corresponding path program 183 times [2021-03-11 16:11:54,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:11:54,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132027096] [2021-03-11 16:11:54,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:11:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:11:54,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:54,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:11:54,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:54,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:11:54,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:54,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:11:54,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:54,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:54,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:54,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:54,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:54,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:11:54,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:54,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:11:54,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:54,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:54,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:54,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:54,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:54,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:54,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:54,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:54,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:54,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:54,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:54,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:54,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:54,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:54,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:11:54,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:11:54,773 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:11:54,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:11:54,853 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:11:54,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:11:54,942 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:11:54,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:11:54,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:11:54,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132027096] [2021-03-11 16:11:54,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:11:54,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:11:54,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690199455] [2021-03-11 16:11:54,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:11:54,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:11:54,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:11:54,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:11:54,951 INFO L87 Difference]: Start difference. First operand 1374 states and 4272 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:01,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:12:01,041 INFO L93 Difference]: Finished difference Result 1678 states and 5194 transitions. [2021-03-11 16:12:01,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-11 16:12:01,045 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:12:01,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:12:01,047 INFO L225 Difference]: With dead ends: 1678 [2021-03-11 16:12:01,047 INFO L226 Difference]: Without dead ends: 1637 [2021-03-11 16:12:01,048 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 3151.8ms TimeCoverageRelationStatistics Valid=224, Invalid=2128, Unknown=0, NotChecked=0, Total=2352 [2021-03-11 16:12:01,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2021-03-11 16:12:01,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1370. [2021-03-11 16:12:01,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.1132213294375455) internal successors, (4262), 1369 states have internal predecessors, (4262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:01,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 4262 transitions. [2021-03-11 16:12:01,067 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 4262 transitions. Word has length 34 [2021-03-11 16:12:01,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:12:01,067 INFO L480 AbstractCegarLoop]: Abstraction has 1370 states and 4262 transitions. [2021-03-11 16:12:01,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:01,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 4262 transitions. [2021-03-11 16:12:01,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:12:01,069 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:12:01,069 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:12:01,069 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-03-11 16:12:01,069 INFO L428 AbstractCegarLoop]: === Iteration 184 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:12:01,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:12:01,069 INFO L82 PathProgramCache]: Analyzing trace with hash -210124118, now seen corresponding path program 184 times [2021-03-11 16:12:01,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:12:01,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586505929] [2021-03-11 16:12:01,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:12:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:12:01,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:01,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:12:01,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:01,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:12:01,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:01,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:12:01,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:01,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:01,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:01,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:01,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:01,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:12:01,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:01,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:12:01,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:01,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:01,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:01,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:01,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:01,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:01,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:01,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:01,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:01,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:01,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:01,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:01,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:01,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:01,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:01,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:01,845 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:12:01,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:12:01,935 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:12:01,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:12:02,027 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:12:02,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:02,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:12:02,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586505929] [2021-03-11 16:12:02,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:12:02,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:12:02,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444626910] [2021-03-11 16:12:02,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:12:02,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:12:02,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:12:02,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:12:02,036 INFO L87 Difference]: Start difference. First operand 1370 states and 4262 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:04,912 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2021-03-11 16:12:10,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:12:10,239 INFO L93 Difference]: Finished difference Result 1939 states and 6004 transitions. [2021-03-11 16:12:10,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-11 16:12:10,243 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:12:10,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:12:10,245 INFO L225 Difference]: With dead ends: 1939 [2021-03-11 16:12:10,245 INFO L226 Difference]: Without dead ends: 1914 [2021-03-11 16:12:10,246 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 3718.4ms TimeCoverageRelationStatistics Valid=252, Invalid=2504, Unknown=0, NotChecked=0, Total=2756 [2021-03-11 16:12:10,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2021-03-11 16:12:10,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1377. [2021-03-11 16:12:10,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1376 states have (on average 3.11046511627907) internal successors, (4280), 1376 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:10,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 4280 transitions. [2021-03-11 16:12:10,260 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 4280 transitions. Word has length 34 [2021-03-11 16:12:10,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:12:10,260 INFO L480 AbstractCegarLoop]: Abstraction has 1377 states and 4280 transitions. [2021-03-11 16:12:10,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:10,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 4280 transitions. [2021-03-11 16:12:10,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:12:10,262 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:12:10,262 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:12:10,262 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-03-11 16:12:10,262 INFO L428 AbstractCegarLoop]: === Iteration 185 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:12:10,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:12:10,262 INFO L82 PathProgramCache]: Analyzing trace with hash 82716864, now seen corresponding path program 185 times [2021-03-11 16:12:10,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:12:10,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889660240] [2021-03-11 16:12:10,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:12:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:12:10,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:10,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:12:10,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:10,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:12:10,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:10,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:12:10,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:10,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:10,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:10,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:10,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:10,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:12:10,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:10,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:12:10,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:10,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:10,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:10,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:10,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:10,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:10,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:10,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:10,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:10,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:10,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:10,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:10,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:10,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:10,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:10,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:10,955 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:12:10,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:12:11,034 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:12:11,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:12:11,117 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:12:11,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:11,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:12:11,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889660240] [2021-03-11 16:12:11,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:12:11,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:12:11,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633889284] [2021-03-11 16:12:11,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:12:11,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:12:11,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:12:11,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:12:11,125 INFO L87 Difference]: Start difference. First operand 1377 states and 4280 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:18,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:12:18,499 INFO L93 Difference]: Finished difference Result 1849 states and 5673 transitions. [2021-03-11 16:12:18,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-11 16:12:18,502 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:12:18,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:12:18,505 INFO L225 Difference]: With dead ends: 1849 [2021-03-11 16:12:18,505 INFO L226 Difference]: Without dead ends: 1822 [2021-03-11 16:12:18,505 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 3257.8ms TimeCoverageRelationStatistics Valid=221, Invalid=2131, Unknown=0, NotChecked=0, Total=2352 [2021-03-11 16:12:18,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2021-03-11 16:12:18,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1376. [2021-03-11 16:12:18,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1375 states have (on average 3.1105454545454547) internal successors, (4277), 1375 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:18,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 4277 transitions. [2021-03-11 16:12:18,519 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 4277 transitions. Word has length 34 [2021-03-11 16:12:18,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:12:18,519 INFO L480 AbstractCegarLoop]: Abstraction has 1376 states and 4277 transitions. [2021-03-11 16:12:18,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:18,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 4277 transitions. [2021-03-11 16:12:18,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:12:18,520 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:12:18,520 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:12:18,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-03-11 16:12:18,520 INFO L428 AbstractCegarLoop]: === Iteration 186 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:12:18,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:12:18,521 INFO L82 PathProgramCache]: Analyzing trace with hash -653023258, now seen corresponding path program 186 times [2021-03-11 16:12:18,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:12:18,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005835115] [2021-03-11 16:12:18,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:12:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:12:18,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:18,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:12:18,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:18,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:12:18,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:18,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:12:18,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:18,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:18,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:18,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:18,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:18,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:12:18,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:18,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:12:18,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:18,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:18,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:18,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:18,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:18,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:18,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:18,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:18,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:18,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:18,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:18,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:19,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:19,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:19,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:19,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:19,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:19,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:19,282 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:12:19,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:12:19,366 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:12:19,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:19,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:12:19,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005835115] [2021-03-11 16:12:19,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:12:19,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:12:19,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384332059] [2021-03-11 16:12:19,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:12:19,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:12:19,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:12:19,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:12:19,374 INFO L87 Difference]: Start difference. First operand 1376 states and 4277 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:25,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:12:25,028 INFO L93 Difference]: Finished difference Result 1739 states and 5337 transitions. [2021-03-11 16:12:25,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-11 16:12:25,031 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:12:25,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:12:25,034 INFO L225 Difference]: With dead ends: 1739 [2021-03-11 16:12:25,034 INFO L226 Difference]: Without dead ends: 1714 [2021-03-11 16:12:25,034 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 2990.9ms TimeCoverageRelationStatistics Valid=209, Invalid=1953, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 16:12:25,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2021-03-11 16:12:25,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1376. [2021-03-11 16:12:25,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1375 states have (on average 3.1105454545454547) internal successors, (4277), 1375 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:25,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 4277 transitions. [2021-03-11 16:12:25,048 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 4277 transitions. Word has length 34 [2021-03-11 16:12:25,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:12:25,048 INFO L480 AbstractCegarLoop]: Abstraction has 1376 states and 4277 transitions. [2021-03-11 16:12:25,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:25,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 4277 transitions. [2021-03-11 16:12:25,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:12:25,049 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:12:25,049 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:12:25,049 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-03-11 16:12:25,049 INFO L428 AbstractCegarLoop]: === Iteration 187 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:12:25,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:12:25,050 INFO L82 PathProgramCache]: Analyzing trace with hash 900150628, now seen corresponding path program 187 times [2021-03-11 16:12:25,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:12:25,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709648120] [2021-03-11 16:12:25,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:12:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:12:25,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:25,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:12:25,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:25,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:12:25,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:25,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:12:25,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:25,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:25,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:25,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:25,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:25,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:12:25,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:25,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:12:25,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:25,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:25,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:25,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:25,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:25,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:25,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:25,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:25,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:25,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:25,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:25,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:25,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:25,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:25,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:25,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:25,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:25,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:25,832 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:12:25,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:12:25,918 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:12:25,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:12:25,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709648120] [2021-03-11 16:12:25,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:12:25,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:12:25,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100983393] [2021-03-11 16:12:25,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:12:25,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:12:25,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:12:25,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:12:25,927 INFO L87 Difference]: Start difference. First operand 1376 states and 4277 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:31,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:12:31,115 INFO L93 Difference]: Finished difference Result 1713 states and 5267 transitions. [2021-03-11 16:12:31,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 16:12:31,119 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:12:31,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:12:31,121 INFO L225 Difference]: With dead ends: 1713 [2021-03-11 16:12:31,121 INFO L226 Difference]: Without dead ends: 1680 [2021-03-11 16:12:31,121 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 2817.6ms TimeCoverageRelationStatistics Valid=194, Invalid=1786, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 16:12:31,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2021-03-11 16:12:31,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1375. [2021-03-11 16:12:31,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 1374 states have (on average 3.111353711790393) internal successors, (4275), 1374 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:31,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 4275 transitions. [2021-03-11 16:12:31,135 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 4275 transitions. Word has length 34 [2021-03-11 16:12:31,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:12:31,135 INFO L480 AbstractCegarLoop]: Abstraction has 1375 states and 4275 transitions. [2021-03-11 16:12:31,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:31,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 4275 transitions. [2021-03-11 16:12:31,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:12:31,137 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:12:31,137 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:12:31,137 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-03-11 16:12:31,137 INFO L428 AbstractCegarLoop]: === Iteration 188 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:12:31,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:12:31,137 INFO L82 PathProgramCache]: Analyzing trace with hash -205744758, now seen corresponding path program 188 times [2021-03-11 16:12:31,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:12:31,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403198105] [2021-03-11 16:12:31,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:12:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:12:31,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:31,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:12:31,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:31,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:12:31,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:31,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:12:31,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:31,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:31,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:31,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:31,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:31,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:12:31,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:31,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:12:31,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:31,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:31,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:31,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:31,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:31,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:31,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:31,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:31,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:31,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:31,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:31,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:31,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:31,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:31,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:31,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:31,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:31,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:31,934 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:12:31,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:12:32,018 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:12:32,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:32,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:12:32,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403198105] [2021-03-11 16:12:32,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:12:32,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:12:32,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522108525] [2021-03-11 16:12:32,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:12:32,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:12:32,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:12:32,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:12:32,027 INFO L87 Difference]: Start difference. First operand 1375 states and 4275 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:37,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:12:37,230 INFO L93 Difference]: Finished difference Result 1708 states and 5248 transitions. [2021-03-11 16:12:37,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 16:12:37,233 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:12:37,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:12:37,236 INFO L225 Difference]: With dead ends: 1708 [2021-03-11 16:12:37,236 INFO L226 Difference]: Without dead ends: 1682 [2021-03-11 16:12:37,236 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 2671.7ms TimeCoverageRelationStatistics Valid=174, Invalid=1632, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 16:12:37,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2021-03-11 16:12:37,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1377. [2021-03-11 16:12:37,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1376 states have (on average 3.109011627906977) internal successors, (4278), 1376 states have internal predecessors, (4278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:37,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 4278 transitions. [2021-03-11 16:12:37,250 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 4278 transitions. Word has length 34 [2021-03-11 16:12:37,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:12:37,250 INFO L480 AbstractCegarLoop]: Abstraction has 1377 states and 4278 transitions. [2021-03-11 16:12:37,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:37,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 4278 transitions. [2021-03-11 16:12:37,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:12:37,251 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:12:37,251 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:12:37,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-03-11 16:12:37,251 INFO L428 AbstractCegarLoop]: === Iteration 189 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:12:37,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:12:37,251 INFO L82 PathProgramCache]: Analyzing trace with hash 888346830, now seen corresponding path program 189 times [2021-03-11 16:12:37,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:12:37,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522156113] [2021-03-11 16:12:37,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:12:37,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:12:37,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:37,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:12:37,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:37,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:12:37,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:37,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:12:37,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:37,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:37,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:37,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:37,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:37,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:12:37,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:37,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:12:37,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:37,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:37,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:37,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:37,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:37,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:37,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:37,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:37,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:37,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:37,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:37,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:37,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:37,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:37,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:37,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:37,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:37,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:38,058 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:12:38,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:12:38,144 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:12:38,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:38,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:12:38,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522156113] [2021-03-11 16:12:38,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:12:38,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:12:38,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478696276] [2021-03-11 16:12:38,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:12:38,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:12:38,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:12:38,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:12:38,153 INFO L87 Difference]: Start difference. First operand 1377 states and 4278 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:43,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:12:43,357 INFO L93 Difference]: Finished difference Result 1681 states and 5184 transitions. [2021-03-11 16:12:43,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 16:12:43,361 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:12:43,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:12:43,364 INFO L225 Difference]: With dead ends: 1681 [2021-03-11 16:12:43,364 INFO L226 Difference]: Without dead ends: 1649 [2021-03-11 16:12:43,364 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 2740.9ms TimeCoverageRelationStatistics Valid=176, Invalid=1630, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 16:12:43,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2021-03-11 16:12:43,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1376. [2021-03-11 16:12:43,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1375 states have (on average 3.109818181818182) internal successors, (4276), 1375 states have internal predecessors, (4276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:43,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 4276 transitions. [2021-03-11 16:12:43,377 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 4276 transitions. Word has length 34 [2021-03-11 16:12:43,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:12:43,378 INFO L480 AbstractCegarLoop]: Abstraction has 1376 states and 4276 transitions. [2021-03-11 16:12:43,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:43,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 4276 transitions. [2021-03-11 16:12:43,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:12:43,379 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:12:43,379 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:12:43,379 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-03-11 16:12:43,379 INFO L428 AbstractCegarLoop]: === Iteration 190 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:12:43,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:12:43,379 INFO L82 PathProgramCache]: Analyzing trace with hash 860046478, now seen corresponding path program 190 times [2021-03-11 16:12:43,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:12:43,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546924111] [2021-03-11 16:12:43,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:12:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:12:43,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:43,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:12:43,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:43,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:12:43,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:43,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:12:43,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:43,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:43,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:43,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:43,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:43,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:12:43,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:43,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:12:43,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:43,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:43,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:43,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:43,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:43,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:43,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:43,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:43,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:43,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:43,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:43,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:43,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:43,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:44,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:44,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:44,092 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:12:44,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:12:44,171 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:12:44,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:12:44,257 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:12:44,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:44,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:12:44,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546924111] [2021-03-11 16:12:44,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:12:44,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:12:44,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715837429] [2021-03-11 16:12:44,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:12:44,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:12:44,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:12:44,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:12:44,266 INFO L87 Difference]: Start difference. First operand 1376 states and 4276 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:49,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:12:49,836 INFO L93 Difference]: Finished difference Result 1660 states and 5133 transitions. [2021-03-11 16:12:49,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 16:12:49,839 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:12:49,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:12:49,842 INFO L225 Difference]: With dead ends: 1660 [2021-03-11 16:12:49,842 INFO L226 Difference]: Without dead ends: 1623 [2021-03-11 16:12:49,842 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 2912.1ms TimeCoverageRelationStatistics Valid=198, Invalid=1872, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 16:12:49,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2021-03-11 16:12:49,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1378. [2021-03-11 16:12:49,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1377 states have (on average 3.1082062454611474) internal successors, (4280), 1377 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:49,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 4280 transitions. [2021-03-11 16:12:49,856 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 4280 transitions. Word has length 34 [2021-03-11 16:12:49,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:12:49,856 INFO L480 AbstractCegarLoop]: Abstraction has 1378 states and 4280 transitions. [2021-03-11 16:12:49,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:49,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 4280 transitions. [2021-03-11 16:12:49,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:12:49,857 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:12:49,857 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:12:49,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-03-11 16:12:49,857 INFO L428 AbstractCegarLoop]: === Iteration 191 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:12:49,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:12:49,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1977396312, now seen corresponding path program 191 times [2021-03-11 16:12:49,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:12:49,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998201458] [2021-03-11 16:12:49,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:12:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:12:49,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:49,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:12:49,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:49,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:12:49,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:49,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:12:49,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:49,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:49,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:49,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:50,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:50,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:12:50,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:50,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:12:50,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:50,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:50,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:50,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:50,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:50,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:50,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:50,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:50,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:50,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:50,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:50,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:50,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:50,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:50,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:50,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:50,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:50,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:50,688 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:12:50,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:12:50,773 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:12:50,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:50,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:12:50,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998201458] [2021-03-11 16:12:50,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:12:50,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:12:50,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702440564] [2021-03-11 16:12:50,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:12:50,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:12:50,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:12:50,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:12:50,782 INFO L87 Difference]: Start difference. First operand 1378 states and 4280 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:55,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:12:55,834 INFO L93 Difference]: Finished difference Result 1662 states and 5124 transitions. [2021-03-11 16:12:55,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 16:12:55,837 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:12:55,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:12:55,840 INFO L225 Difference]: With dead ends: 1662 [2021-03-11 16:12:55,840 INFO L226 Difference]: Without dead ends: 1636 [2021-03-11 16:12:55,840 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 2648.9ms TimeCoverageRelationStatistics Valid=166, Invalid=1556, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 16:12:55,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-03-11 16:12:55,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1378. [2021-03-11 16:12:55,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1377 states have (on average 3.1082062454611474) internal successors, (4280), 1377 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:55,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 4280 transitions. [2021-03-11 16:12:55,854 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 4280 transitions. Word has length 34 [2021-03-11 16:12:55,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:12:55,854 INFO L480 AbstractCegarLoop]: Abstraction has 1378 states and 4280 transitions. [2021-03-11 16:12:55,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:12:55,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 4280 transitions. [2021-03-11 16:12:55,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:12:55,855 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:12:55,855 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:12:55,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-03-11 16:12:55,857 INFO L428 AbstractCegarLoop]: === Iteration 192 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:12:55,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:12:55,857 INFO L82 PathProgramCache]: Analyzing trace with hash 904310932, now seen corresponding path program 192 times [2021-03-11 16:12:55,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:12:55,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339055152] [2021-03-11 16:12:55,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:12:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:12:55,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:55,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:12:55,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:55,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:12:55,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:55,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:12:55,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:55,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:55,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:55,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:56,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:56,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:12:56,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:56,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:12:56,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:56,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:56,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:56,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:56,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:56,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:56,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:56,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:56,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:56,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:56,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:56,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:56,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:56,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:56,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:56,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:56,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:12:56,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:12:56,672 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:12:56,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:12:56,760 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:12:56,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:12:56,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:12:56,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339055152] [2021-03-11 16:12:56,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:12:56,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:12:56,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655540591] [2021-03-11 16:12:56,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:12:56,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:12:56,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:12:56,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:12:56,768 INFO L87 Difference]: Start difference. First operand 1378 states and 4280 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:13:01,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:13:01,817 INFO L93 Difference]: Finished difference Result 1635 states and 5060 transitions. [2021-03-11 16:13:01,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 16:13:01,821 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:13:01,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:13:01,823 INFO L225 Difference]: With dead ends: 1635 [2021-03-11 16:13:01,823 INFO L226 Difference]: Without dead ends: 1601 [2021-03-11 16:13:01,823 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 2674.3ms TimeCoverageRelationStatistics Valid=169, Invalid=1553, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 16:13:01,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2021-03-11 16:13:01,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1375. [2021-03-11 16:13:01,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 1374 states have (on average 3.1106259097525473) internal successors, (4274), 1374 states have internal predecessors, (4274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:13:01,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 4274 transitions. [2021-03-11 16:13:01,837 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 4274 transitions. Word has length 34 [2021-03-11 16:13:01,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:13:01,837 INFO L480 AbstractCegarLoop]: Abstraction has 1375 states and 4274 transitions. [2021-03-11 16:13:01,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:13:01,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 4274 transitions. [2021-03-11 16:13:01,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:13:01,839 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:13:01,839 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:13:01,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-03-11 16:13:01,839 INFO L428 AbstractCegarLoop]: === Iteration 193 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:13:01,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:13:01,840 INFO L82 PathProgramCache]: Analyzing trace with hash 861939836, now seen corresponding path program 193 times [2021-03-11 16:13:01,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:13:01,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275695606] [2021-03-11 16:13:01,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:13:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:13:01,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:01,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:13:01,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:01,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:13:01,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:01,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:13:01,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:01,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:01,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:01,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:01,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:02,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:13:02,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:02,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:13:02,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:02,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:02,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:02,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:02,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:02,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:02,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:02,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:13:02,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:02,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:13:02,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:02,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:02,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:02,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:02,510 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:13:02,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:13:02,587 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:13:02,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:13:02,617 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:13:02,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:13:02,703 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:13:02,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:02,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:13:02,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275695606] [2021-03-11 16:13:02,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:13:02,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:13:02,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888368214] [2021-03-11 16:13:02,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:13:02,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:13:02,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:13:02,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:13:02,712 INFO L87 Difference]: Start difference. First operand 1375 states and 4274 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:13:06,250 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2021-03-11 16:13:08,255 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2021-03-11 16:13:11,914 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2021-03-11 16:13:12,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:13:12,337 INFO L93 Difference]: Finished difference Result 1960 states and 6064 transitions. [2021-03-11 16:13:12,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-03-11 16:13:12,342 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:13:12,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:13:12,344 INFO L225 Difference]: With dead ends: 1960 [2021-03-11 16:13:12,344 INFO L226 Difference]: Without dead ends: 1931 [2021-03-11 16:13:12,345 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 4351.6ms TimeCoverageRelationStatistics Valid=297, Invalid=2673, Unknown=0, NotChecked=0, Total=2970 [2021-03-11 16:13:12,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1931 states. [2021-03-11 16:13:12,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1931 to 1383. [2021-03-11 16:13:12,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 1382 states have (on average 3.106367583212735) internal successors, (4293), 1382 states have internal predecessors, (4293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:13:12,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 4293 transitions. [2021-03-11 16:13:12,360 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 4293 transitions. Word has length 34 [2021-03-11 16:13:12,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:13:12,360 INFO L480 AbstractCegarLoop]: Abstraction has 1383 states and 4293 transitions. [2021-03-11 16:13:12,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:13:12,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 4293 transitions. [2021-03-11 16:13:12,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:13:12,362 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:13:12,362 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:13:12,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-03-11 16:13:12,362 INFO L428 AbstractCegarLoop]: === Iteration 194 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:13:12,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:13:12,362 INFO L82 PathProgramCache]: Analyzing trace with hash 419040696, now seen corresponding path program 194 times [2021-03-11 16:13:12,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:13:12,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121043580] [2021-03-11 16:13:12,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:13:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:13:12,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:12,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:13:12,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:12,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:13:12,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:12,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:13:12,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:12,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:12,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:12,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:12,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:12,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:13:12,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:12,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:13:12,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:12,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:12,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:12,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:12,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:12,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:12,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:12,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:13:12,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:12,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:13:12,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:12,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:12,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:12,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:13,054 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:13:13,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:13:13,135 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:13:13,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:13:13,223 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:13:13,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:13:13,315 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:13:13,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:13,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:13:13,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121043580] [2021-03-11 16:13:13,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:13:13,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:13:13,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556621417] [2021-03-11 16:13:13,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:13:13,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:13:13,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:13:13,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:13:13,324 INFO L87 Difference]: Start difference. First operand 1383 states and 4293 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:13:17,028 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2021-03-11 16:13:17,978 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 20 [2021-03-11 16:13:19,274 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2021-03-11 16:13:20,124 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 16:13:21,190 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 16:13:24,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:13:24,000 INFO L93 Difference]: Finished difference Result 2098 states and 6478 transitions. [2021-03-11 16:13:24,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-11 16:13:24,004 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:13:24,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:13:24,007 INFO L225 Difference]: With dead ends: 2098 [2021-03-11 16:13:24,007 INFO L226 Difference]: Without dead ends: 2073 [2021-03-11 16:13:24,007 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 920 ImplicationChecksByTransitivity, 5288.3ms TimeCoverageRelationStatistics Valid=369, Invalid=3291, Unknown=0, NotChecked=0, Total=3660 [2021-03-11 16:13:24,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2021-03-11 16:13:24,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 1383. [2021-03-11 16:13:24,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 1382 states have (on average 3.106367583212735) internal successors, (4293), 1382 states have internal predecessors, (4293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:13:24,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 4293 transitions. [2021-03-11 16:13:24,023 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 4293 transitions. Word has length 34 [2021-03-11 16:13:24,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:13:24,023 INFO L480 AbstractCegarLoop]: Abstraction has 1383 states and 4293 transitions. [2021-03-11 16:13:24,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:13:24,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 4293 transitions. [2021-03-11 16:13:24,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:13:24,025 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:13:24,025 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:13:24,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-03-11 16:13:24,025 INFO L428 AbstractCegarLoop]: === Iteration 195 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:13:24,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:13:24,025 INFO L82 PathProgramCache]: Analyzing trace with hash 711881678, now seen corresponding path program 195 times [2021-03-11 16:13:24,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:13:24,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42320200] [2021-03-11 16:13:24,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:13:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:13:24,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:24,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:13:24,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:24,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:13:24,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:24,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:13:24,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:24,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:24,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:24,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:24,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:24,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:13:24,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:24,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:13:24,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:24,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:24,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:24,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:24,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:24,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:24,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:24,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:13:24,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:24,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:13:24,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:24,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:24,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:24,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:24,711 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:13:24,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:13:24,792 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:13:24,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:13:24,881 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:13:24,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:13:24,965 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:13:24,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:13:24,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42320200] [2021-03-11 16:13:24,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:13:24,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:13:24,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463139709] [2021-03-11 16:13:24,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:13:24,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:13:24,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:13:24,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:13:24,974 INFO L87 Difference]: Start difference. First operand 1383 states and 4293 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:13:28,495 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-03-11 16:13:30,657 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2021-03-11 16:13:31,380 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2021-03-11 16:13:32,394 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2021-03-11 16:13:35,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:13:35,124 INFO L93 Difference]: Finished difference Result 2058 states and 6365 transitions. [2021-03-11 16:13:35,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-11 16:13:35,128 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:13:35,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:13:35,131 INFO L225 Difference]: With dead ends: 2058 [2021-03-11 16:13:35,131 INFO L226 Difference]: Without dead ends: 2030 [2021-03-11 16:13:35,131 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 4815.2ms TimeCoverageRelationStatistics Valid=340, Invalid=3082, Unknown=0, NotChecked=0, Total=3422 [2021-03-11 16:13:35,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2030 states. [2021-03-11 16:13:35,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2030 to 1381. [2021-03-11 16:13:35,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1380 states have (on average 3.1079710144927537) internal successors, (4289), 1380 states have internal predecessors, (4289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:13:35,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 4289 transitions. [2021-03-11 16:13:35,147 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 4289 transitions. Word has length 34 [2021-03-11 16:13:35,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:13:35,147 INFO L480 AbstractCegarLoop]: Abstraction has 1381 states and 4289 transitions. [2021-03-11 16:13:35,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:13:35,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 4289 transitions. [2021-03-11 16:13:35,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:13:35,148 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:13:35,148 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:13:35,148 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-03-11 16:13:35,148 INFO L428 AbstractCegarLoop]: === Iteration 196 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:13:35,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:13:35,149 INFO L82 PathProgramCache]: Analyzing trace with hash 16968384, now seen corresponding path program 196 times [2021-03-11 16:13:35,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:13:35,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717409985] [2021-03-11 16:13:35,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:13:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:13:35,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:35,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:13:35,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:35,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:13:35,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:35,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:13:35,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:35,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:35,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:35,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:35,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:35,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:13:35,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:35,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:13:35,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:35,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:35,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:35,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:35,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:35,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:35,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:35,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:13:35,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:35,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:13:35,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:35,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:35,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:35,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:35,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:35,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:13:35,891 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:13:35,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:13:35,920 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:13:35,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:13:36,007 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:13:36,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:36,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:13:36,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717409985] [2021-03-11 16:13:36,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:13:36,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 16:13:36,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246447111] [2021-03-11 16:13:36,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 16:13:36,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:13:36,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 16:13:36,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 16:13:36,016 INFO L87 Difference]: Start difference. First operand 1381 states and 4289 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:13:41,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:13:41,497 INFO L93 Difference]: Finished difference Result 1695 states and 5200 transitions. [2021-03-11 16:13:41,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-11 16:13:41,501 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:13:41,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:13:41,503 INFO L225 Difference]: With dead ends: 1695 [2021-03-11 16:13:41,503 INFO L226 Difference]: Without dead ends: 1666 [2021-03-11 16:13:41,503 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 2715.1ms TimeCoverageRelationStatistics Valid=169, Invalid=1471, Unknown=0, NotChecked=0, Total=1640 [2021-03-11 16:13:41,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2021-03-11 16:13:41,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1393. [2021-03-11 16:13:41,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 1392 states have (on average 3.1077586206896552) internal successors, (4326), 1392 states have internal predecessors, (4326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:13:41,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 4326 transitions. [2021-03-11 16:13:41,518 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 4326 transitions. Word has length 34 [2021-03-11 16:13:41,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:13:41,518 INFO L480 AbstractCegarLoop]: Abstraction has 1393 states and 4326 transitions. [2021-03-11 16:13:41,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:13:41,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 4326 transitions. [2021-03-11 16:13:41,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:13:41,519 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:13:41,519 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:13:41,519 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-03-11 16:13:41,519 INFO L428 AbstractCegarLoop]: === Iteration 197 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:13:41,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:13:41,520 INFO L82 PathProgramCache]: Analyzing trace with hash -868829896, now seen corresponding path program 197 times [2021-03-11 16:13:41,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:13:41,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566867477] [2021-03-11 16:13:41,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:13:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:13:41,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:41,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:13:41,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:41,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:13:41,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:41,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:13:41,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:41,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:41,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:41,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:41,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:41,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:13:41,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:41,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:13:41,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:41,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:41,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:41,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:41,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:41,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:41,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:41,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:13:41,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:41,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:13:42,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:42,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:42,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:42,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:42,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:42,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:13:42,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:42,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:13:42,369 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:13:42,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:13:42,463 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:13:42,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:42,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:13:42,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566867477] [2021-03-11 16:13:42,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:13:42,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:13:42,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030426065] [2021-03-11 16:13:42,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:13:42,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:13:42,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:13:42,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:13:42,472 INFO L87 Difference]: Start difference. First operand 1393 states and 4326 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:13:48,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:13:48,564 INFO L93 Difference]: Finished difference Result 1755 states and 5346 transitions. [2021-03-11 16:13:48,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 16:13:48,568 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:13:48,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:13:48,570 INFO L225 Difference]: With dead ends: 1755 [2021-03-11 16:13:48,570 INFO L226 Difference]: Without dead ends: 1730 [2021-03-11 16:13:48,571 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 3092.0ms TimeCoverageRelationStatistics Valid=196, Invalid=1784, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 16:13:48,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2021-03-11 16:13:48,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1386. [2021-03-11 16:13:48,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1385 states have (on average 3.1061371841155236) internal successors, (4302), 1385 states have internal predecessors, (4302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:13:48,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 4302 transitions. [2021-03-11 16:13:48,585 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 4302 transitions. Word has length 34 [2021-03-11 16:13:48,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:13:48,585 INFO L480 AbstractCegarLoop]: Abstraction has 1386 states and 4302 transitions. [2021-03-11 16:13:48,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:13:48,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 4302 transitions. [2021-03-11 16:13:48,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:13:48,586 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:13:48,586 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:13:48,586 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-03-11 16:13:48,587 INFO L428 AbstractCegarLoop]: === Iteration 198 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:13:48,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:13:48,587 INFO L82 PathProgramCache]: Analyzing trace with hash 684343990, now seen corresponding path program 198 times [2021-03-11 16:13:48,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:13:48,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773370869] [2021-03-11 16:13:48,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:13:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:13:48,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:48,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:13:48,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:48,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:13:48,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:48,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:13:48,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:48,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:48,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:48,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:48,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:48,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:13:48,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:48,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:13:48,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:48,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:48,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:48,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:48,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:48,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:48,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:48,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:13:49,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:49,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:13:49,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:49,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:49,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:49,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:49,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:49,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:13:49,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:49,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:13:49,457 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 16:13:49,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:13:49,549 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:13:49,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:49,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:13:49,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773370869] [2021-03-11 16:13:49,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:13:49,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:13:49,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492343767] [2021-03-11 16:13:49,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:13:49,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:13:49,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:13:49,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:13:49,558 INFO L87 Difference]: Start difference. First operand 1386 states and 4302 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:13:55,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:13:55,618 INFO L93 Difference]: Finished difference Result 1721 states and 5246 transitions. [2021-03-11 16:13:55,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-11 16:13:55,621 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-11 16:13:55,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:13:55,623 INFO L225 Difference]: With dead ends: 1721 [2021-03-11 16:13:55,623 INFO L226 Difference]: Without dead ends: 1676 [2021-03-11 16:13:55,624 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 2964.8ms TimeCoverageRelationStatistics Valid=176, Invalid=1630, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 16:13:55,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2021-03-11 16:13:55,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1386. [2021-03-11 16:13:55,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1385 states have (on average 3.104693140794224) internal successors, (4300), 1385 states have internal predecessors, (4300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:13:55,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 4300 transitions. [2021-03-11 16:13:55,638 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 4300 transitions. Word has length 34 [2021-03-11 16:13:55,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:13:55,638 INFO L480 AbstractCegarLoop]: Abstraction has 1386 states and 4300 transitions. [2021-03-11 16:13:55,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:13:55,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 4300 transitions. [2021-03-11 16:13:55,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-11 16:13:55,639 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:13:55,639 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:13:55,639 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-03-11 16:13:55,639 INFO L428 AbstractCegarLoop]: === Iteration 199 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 16:13:55,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:13:55,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1270902208, now seen corresponding path program 199 times [2021-03-11 16:13:55,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:13:55,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415865670] [2021-03-11 16:13:55,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:13:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:13:55,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:55,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:13:55,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:55,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:13:55,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:55,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 16:13:55,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:55,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:55,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:55,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:55,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:55,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:13:55,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:55,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 16:13:55,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:55,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:55,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:55,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:55,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:55,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:56,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:56,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:13:56,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:56,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 16:13:56,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:56,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:56,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:56,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:56,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:13:56,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:56,394 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 16:13:56,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 16:13:56,481 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 16:13:56,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 16:13:56,574 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 16:13:56,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 16:13:56,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:13:56,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415865670] [2021-03-11 16:13:56,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:13:56,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 16:13:56,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684398402] [2021-03-11 16:13:56,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 16:13:56,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:13:56,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 16:13:56,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 16:13:56,583 INFO L87 Difference]: Start difference. First operand 1386 states and 4300 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-03-11 16:13:58,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-11 16:13:58,212 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-03-11 16:13:58,212 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-11 16:13:58,215 WARN L224 ceAbstractionStarter]: Timeout [2021-03-11 16:13:58,215 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 04:13:58 BasicIcfg [2021-03-11 16:13:58,215 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 16:13:58,216 INFO L168 Benchmark]: Toolchain (without parser) took 788394.51 ms. Allocated memory was 255.9 MB in the beginning and 515.9 MB in the end (delta: 260.0 MB). Free memory was 236.4 MB in the beginning and 208.7 MB in the end (delta: 27.7 MB). Peak memory consumption was 287.4 MB. Max. memory is 16.0 GB. [2021-03-11 16:13:58,216 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 16:13:58,216 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.72 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 234.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 16:13:58,216 INFO L168 Benchmark]: Boogie Preprocessor took 16.06 ms. Allocated memory is still 255.9 MB. Free memory was 234.3 MB in the beginning and 233.3 MB in the end (delta: 944.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 16:13:58,216 INFO L168 Benchmark]: RCFGBuilder took 273.04 ms. Allocated memory is still 255.9 MB. Free memory was 233.3 MB in the beginning and 233.7 MB in the end (delta: -325.0 kB). Peak memory consumption was 15.2 MB. Max. memory is 16.0 GB. [2021-03-11 16:13:58,216 INFO L168 Benchmark]: TraceAbstraction took 788076.89 ms. Allocated memory was 255.9 MB in the beginning and 515.9 MB in the end (delta: 260.0 MB). Free memory was 233.7 MB in the beginning and 208.7 MB in the end (delta: 24.9 MB). Peak memory consumption was 284.8 MB. Max. memory is 16.0 GB. [2021-03-11 16:13:58,216 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 20.72 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 234.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 16.06 ms. Allocated memory is still 255.9 MB. Free memory was 234.3 MB in the beginning and 233.3 MB in the end (delta: 944.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 273.04 ms. Allocated memory is still 255.9 MB. Free memory was 233.3 MB in the beginning and 233.7 MB in the end (delta: -325.0 kB). Peak memory consumption was 15.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 788076.89 ms. Allocated memory was 255.9 MB in the beginning and 515.9 MB in the end (delta: 260.0 MB). Free memory was 233.7 MB in the beginning and 208.7 MB in the end (delta: 24.9 MB). Peak memory consumption was 284.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 502.6ms, 80 PlacesBefore, 66 PlacesAfterwards, 65 TransitionsBefore, 51 TransitionsAfterwards, 1336 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 15 TotalNumberOfCompositions, 3396 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2493, positive: 2407, positive conditional: 0, positive unconditional: 2407, negative: 86, negative conditional: 0, negative unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1018, positive: 983, positive conditional: 0, positive unconditional: 983, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1018, positive: 979, positive conditional: 0, positive unconditional: 979, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 39, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 152, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 140, negative conditional: 0, negative unconditional: 140, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2493, positive: 1424, positive conditional: 0, positive unconditional: 1424, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 1018, unknown conditional: 0, unknown unconditional: 1018] , Statistics on independence cache: Total cache size (in pairs): 513, Positive cache size: 492, Positive conditional cache size: 0, Positive unconditional cache size: 492, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21 - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 95). Cancelled while BasicCegarLoop was constructing difference of abstraction (1386states) and FLOYD_HOARE automaton (currently 12 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (106 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 787928.1ms, OverallIterations: 199, TraceHistogramMax: 1, EmptinessCheckTime: 341.7ms, AutomataDifference: 688582.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 666.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 28588 SDtfs, 57948 SDslu, 260477 SDs, 0 SdLazy, 390843 SolverSat, 7578 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 153695.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9427 GetRequests, 65 SyntacticMatches, 422 SemanticMatches, 8940 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93423 ImplicationChecksByTransitivity, 335788.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1604occurred in iteration=0, InterpolantAutomatonStates: 7895, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3395.7ms AutomataMinimizationTime, 198 MinimizatonAttempts, 61022 StatesRemovedByMinimization, 196 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 130.0ms SsaConstructionTime, 419.8ms SatisfiabilityAnalysisTime, 93689.6ms InterpolantComputationTime, 6766 NumberOfCodeBlocks, 6766 NumberOfCodeBlocksAsserted, 199 NumberOfCheckSat, 6567 ConstructedInterpolants, 0 QuantifiedInterpolants, 83104 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 199 InterpolantComputations, 199 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown