/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/lamport.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 16:02:05,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 16:02:05,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 16:02:05,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 16:02:05,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 16:02:05,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 16:02:05,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 16:02:05,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 16:02:05,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 16:02:05,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 16:02:05,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 16:02:05,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 16:02:05,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 16:02:05,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 16:02:05,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 16:02:05,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 16:02:05,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 16:02:05,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 16:02:05,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 16:02:05,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 16:02:05,618 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 16:02:05,633 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 16:02:05,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 16:02:05,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 16:02:05,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 16:02:05,634 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 16:02:05,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 16:02:05,635 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 16:02:05,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 16:02:05,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 16:02:05,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 16:02:05,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 16:02:05,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 16:02:05,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 16:02:05,636 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 16:02:05,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 16:02:05,636 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 16:02:05,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 16:02:05,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 16:02:05,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 16:02:05,636 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 16:02:05,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 16:02:05,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 16:02:05,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 16:02:05,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 16:02:05,637 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 16:02:05,637 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 16:02:05,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 16:02:05,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 16:02:05,637 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 16:02:05,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 16:02:05,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 16:02:05,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 16:02:05,917 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 16:02:05,920 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 16:02:05,920 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl [2021-03-11 16:02:05,933 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl' [2021-03-11 16:02:05,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 16:02:05,976 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 16:02:05,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 16:02:05,978 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 16:02:05,978 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 16:02:05,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:02:05" (1/1) ... [2021-03-11 16:02:05,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:02:05" (1/1) ... [2021-03-11 16:02:06,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 16:02:06,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 16:02:06,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 16:02:06,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 16:02:06,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:02:05" (1/1) ... [2021-03-11 16:02:06,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:02:05" (1/1) ... [2021-03-11 16:02:06,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:02:05" (1/1) ... [2021-03-11 16:02:06,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:02:05" (1/1) ... [2021-03-11 16:02:06,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:02:05" (1/1) ... [2021-03-11 16:02:06,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:02:05" (1/1) ... [2021-03-11 16:02:06,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:02:05" (1/1) ... [2021-03-11 16:02:06,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 16:02:06,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 16:02:06,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 16:02:06,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 16:02:06,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:02:05" (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 16:02:06,092 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-11 16:02:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 16:02:06,092 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 16:02:06,093 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-11 16:02:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-11 16:02:06,094 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-11 16:02:06,094 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 16:02:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 16:02:06,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 16:02:06,095 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-11 16:02:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-11 16:02:06,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-11 16:02:06,096 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 16:02:06,315 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 16:02:06,316 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 16:02:06,317 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 04:02:06 BoogieIcfgContainer [2021-03-11 16:02:06,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 16:02:06,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 16:02:06,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 16:02:06,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 16:02:06,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:02:05" (1/2) ... [2021-03-11 16:02:06,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21246415 and model type lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 04:02:06, skipping insertion in model container [2021-03-11 16:02:06,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 04:02:06" (2/2) ... [2021-03-11 16:02:06,322 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.wvr.bpl [2021-03-11 16:02:06,326 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 16:02:06,327 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 16:02:06,329 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 16:02:06,330 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 16:02:06,360 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-11 16:02:06,373 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 16:02:06,395 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 16:02:06,395 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 16:02:06,395 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 16:02:06,395 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 16:02:06,395 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 16:02:06,395 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 16:02:06,395 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 16:02:06,396 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 16:02:06,413 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 16:02:06,424 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 41 transitions, 106 flow [2021-03-11 16:02:06,430 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 41 transitions, 106 flow [2021-03-11 16:02:06,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 106 flow [2021-03-11 16:02:06,476 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-03-11 16:02:06,476 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-11 16:02:06,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 38 events. 0/38 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 16:02:06,480 INFO L116 LiptonReduction]: Number of co-enabled transitions 412 [2021-03-11 16:02:06,842 INFO L131 LiptonReduction]: Checked pairs total: 1378 [2021-03-11 16:02:06,843 INFO L133 LiptonReduction]: Total number of compositions: 15 [2021-03-11 16:02:06,849 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 27 transitions, 78 flow [2021-03-11 16:02:06,863 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 223 states, 221 states have (on average 2.3755656108597285) internal successors, (525), 222 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:06,865 INFO L276 IsEmpty]: Start isEmpty. Operand has 223 states, 221 states have (on average 2.3755656108597285) internal successors, (525), 222 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:06,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-03-11 16:02:06,871 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:06,872 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] [2021-03-11 16:02:06,872 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:02:06,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:06,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1996375280, now seen corresponding path program 1 times [2021-03-11 16:02:06,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:06,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299936083] [2021-03-11 16:02:06,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:06,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:06,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:02:06,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:06,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:02:06,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:06,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:02:06,968 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 16:02:06,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299936083] [2021-03-11 16:02:06,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:06,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 16:02:06,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58876791] [2021-03-11 16:02:06,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 16:02:06,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:06,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 16:02:06,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 16:02:06,994 INFO L87 Difference]: Start difference. First operand has 223 states, 221 states have (on average 2.3755656108597285) internal successors, (525), 222 states have internal predecessors, (525), 0 states have call successors, (0), 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 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:07,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:07,018 INFO L93 Difference]: Finished difference Result 222 states and 521 transitions. [2021-03-11 16:02:07,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 16:02:07,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-03-11 16:02:07,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:07,029 INFO L225 Difference]: With dead ends: 222 [2021-03-11 16:02:07,029 INFO L226 Difference]: Without dead ends: 222 [2021-03-11 16:02:07,030 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 16:02:07,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-03-11 16:02:07,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-03-11 16:02:07,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 2.3574660633484164) internal successors, (521), 221 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:07,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 521 transitions. [2021-03-11 16:02:07,075 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 521 transitions. Word has length 23 [2021-03-11 16:02:07,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:07,076 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 521 transitions. [2021-03-11 16:02:07,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:07,076 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 521 transitions. [2021-03-11 16:02:07,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-03-11 16:02:07,082 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:07,082 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] [2021-03-11 16:02:07,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 16:02:07,082 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:02:07,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:07,083 INFO L82 PathProgramCache]: Analyzing trace with hash -953977090, now seen corresponding path program 2 times [2021-03-11 16:02:07,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:07,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601992307] [2021-03-11 16:02:07,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:07,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:07,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:07,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:07,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 16:02:07,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 16:02:07,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:07,181 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 16:02:07,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601992307] [2021-03-11 16:02:07,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:07,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 16:02:07,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035626111] [2021-03-11 16:02:07,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 16:02:07,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:07,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 16:02:07,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 16:02:07,184 INFO L87 Difference]: Start difference. First operand 222 states and 521 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:07,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:07,312 INFO L93 Difference]: Finished difference Result 277 states and 600 transitions. [2021-03-11 16:02:07,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 16:02:07,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-03-11 16:02:07,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:07,316 INFO L225 Difference]: With dead ends: 277 [2021-03-11 16:02:07,316 INFO L226 Difference]: Without dead ends: 251 [2021-03-11 16:02:07,317 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 58.2ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-03-11 16:02:07,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-03-11 16:02:07,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 227. [2021-03-11 16:02:07,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 2.327433628318584) internal successors, (526), 226 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:07,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 526 transitions. [2021-03-11 16:02:07,336 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 526 transitions. Word has length 23 [2021-03-11 16:02:07,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:07,336 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 526 transitions. [2021-03-11 16:02:07,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:07,337 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 526 transitions. [2021-03-11 16:02:07,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-03-11 16:02:07,337 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:07,337 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] [2021-03-11 16:02:07,337 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 16:02:07,337 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:02:07,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:07,338 INFO L82 PathProgramCache]: Analyzing trace with hash -573697540, now seen corresponding path program 3 times [2021-03-11 16:02:07,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:07,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932065547] [2021-03-11 16:02:07,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:07,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:07,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:07,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:07,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:07,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:07,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:07,470 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-03-11 16:02:07,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 16:02:07,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:02:07,482 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 16:02:07,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932065547] [2021-03-11 16:02:07,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:07,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 16:02:07,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775792226] [2021-03-11 16:02:07,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 16:02:07,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:07,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 16:02:07,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 16:02:07,483 INFO L87 Difference]: Start difference. First operand 227 states and 526 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:07,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:07,607 INFO L93 Difference]: Finished difference Result 662 states and 1537 transitions. [2021-03-11 16:02:07,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 16:02:07,607 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-03-11 16:02:07,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:07,610 INFO L225 Difference]: With dead ends: 662 [2021-03-11 16:02:07,610 INFO L226 Difference]: Without dead ends: 658 [2021-03-11 16:02:07,611 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 125.0ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-03-11 16:02:07,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-03-11 16:02:07,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 261. [2021-03-11 16:02:07,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 2.3192307692307694) internal successors, (603), 260 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:07,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 603 transitions. [2021-03-11 16:02:07,619 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 603 transitions. Word has length 23 [2021-03-11 16:02:07,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:07,619 INFO L480 AbstractCegarLoop]: Abstraction has 261 states and 603 transitions. [2021-03-11 16:02:07,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:07,619 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 603 transitions. [2021-03-11 16:02:07,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-03-11 16:02:07,620 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:07,620 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] [2021-03-11 16:02:07,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 16:02:07,620 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:02:07,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:07,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1291265540, now seen corresponding path program 4 times [2021-03-11 16:02:07,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:07,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386751062] [2021-03-11 16:02:07,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:07,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:07,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:07,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:07,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:07,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:07,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 16:02:07,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:02:07,679 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 16:02:07,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386751062] [2021-03-11 16:02:07,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:07,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 16:02:07,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633374966] [2021-03-11 16:02:07,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 16:02:07,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:07,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 16:02:07,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 16:02:07,681 INFO L87 Difference]: Start difference. First operand 261 states and 603 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:07,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:07,785 INFO L93 Difference]: Finished difference Result 630 states and 1447 transitions. [2021-03-11 16:02:07,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 16:02:07,785 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-03-11 16:02:07,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:07,787 INFO L225 Difference]: With dead ends: 630 [2021-03-11 16:02:07,788 INFO L226 Difference]: Without dead ends: 630 [2021-03-11 16:02:07,788 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 84.1ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-03-11 16:02:07,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2021-03-11 16:02:07,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 279. [2021-03-11 16:02:07,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 2.3093525179856114) internal successors, (642), 278 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:07,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 642 transitions. [2021-03-11 16:02:07,795 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 642 transitions. Word has length 23 [2021-03-11 16:02:07,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:07,796 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 642 transitions. [2021-03-11 16:02:07,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:07,796 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 642 transitions. [2021-03-11 16:02:07,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-03-11 16:02:07,796 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:07,797 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] [2021-03-11 16:02:07,797 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 16:02:07,797 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:02:07,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:07,797 INFO L82 PathProgramCache]: Analyzing trace with hash -344875826, now seen corresponding path program 5 times [2021-03-11 16:02:07,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:07,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944808020] [2021-03-11 16:02:07,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:07,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:07,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:07,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:07,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 16:02:07,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 16:02:07,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:07,838 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 16:02:07,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944808020] [2021-03-11 16:02:07,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:07,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 16:02:07,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33075867] [2021-03-11 16:02:07,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 16:02:07,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:07,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 16:02:07,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 16:02:07,839 INFO L87 Difference]: Start difference. First operand 279 states and 642 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:07,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:07,911 INFO L93 Difference]: Finished difference Result 332 states and 715 transitions. [2021-03-11 16:02:07,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 16:02:07,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-03-11 16:02:07,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:07,913 INFO L225 Difference]: With dead ends: 332 [2021-03-11 16:02:07,913 INFO L226 Difference]: Without dead ends: 301 [2021-03-11 16:02:07,913 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 40.0ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-03-11 16:02:07,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-03-11 16:02:07,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 277. [2021-03-11 16:02:07,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 2.278985507246377) internal successors, (629), 276 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:07,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 629 transitions. [2021-03-11 16:02:07,918 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 629 transitions. Word has length 23 [2021-03-11 16:02:07,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:07,919 INFO L480 AbstractCegarLoop]: Abstraction has 277 states and 629 transitions. [2021-03-11 16:02:07,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:07,919 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 629 transitions. [2021-03-11 16:02:07,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-03-11 16:02:07,919 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:07,919 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] [2021-03-11 16:02:07,920 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 16:02:07,920 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:02:07,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:07,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1337395868, now seen corresponding path program 6 times [2021-03-11 16:02:07,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:07,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518230365] [2021-03-11 16:02:07,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:07,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:07,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:07,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 16:02:07,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 16:02:07,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 16:02:07,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:07,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:07,956 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 16:02:07,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518230365] [2021-03-11 16:02:07,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:07,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 16:02:07,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586166041] [2021-03-11 16:02:07,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 16:02:07,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:07,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 16:02:07,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 16:02:07,957 INFO L87 Difference]: Start difference. First operand 277 states and 629 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:08,038 INFO L93 Difference]: Finished difference Result 343 states and 742 transitions. [2021-03-11 16:02:08,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 16:02:08,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-03-11 16:02:08,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:08,040 INFO L225 Difference]: With dead ends: 343 [2021-03-11 16:02:08,040 INFO L226 Difference]: Without dead ends: 315 [2021-03-11 16:02:08,041 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 37.8ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-03-11 16:02:08,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-03-11 16:02:08,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 277. [2021-03-11 16:02:08,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 2.217391304347826) internal successors, (612), 276 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 612 transitions. [2021-03-11 16:02:08,048 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 612 transitions. Word has length 23 [2021-03-11 16:02:08,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:08,049 INFO L480 AbstractCegarLoop]: Abstraction has 277 states and 612 transitions. [2021-03-11 16:02:08,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,049 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 612 transitions. [2021-03-11 16:02:08,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-03-11 16:02:08,051 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:08,051 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] [2021-03-11 16:02:08,051 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 16:02:08,051 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:02:08,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:08,052 INFO L82 PathProgramCache]: Analyzing trace with hash 469107264, now seen corresponding path program 7 times [2021-03-11 16:02:08,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:08,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55435923] [2021-03-11 16:02:08,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:08,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:08,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:08,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 16:02:08,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 16:02:08,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 16:02:08,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:08,125 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 16:02:08,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55435923] [2021-03-11 16:02:08,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:08,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 16:02:08,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103378379] [2021-03-11 16:02:08,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 16:02:08,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:08,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 16:02:08,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 16:02:08,127 INFO L87 Difference]: Start difference. First operand 277 states and 612 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:08,204 INFO L93 Difference]: Finished difference Result 339 states and 728 transitions. [2021-03-11 16:02:08,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 16:02:08,204 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-03-11 16:02:08,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:08,207 INFO L225 Difference]: With dead ends: 339 [2021-03-11 16:02:08,207 INFO L226 Difference]: Without dead ends: 328 [2021-03-11 16:02:08,207 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 51.9ms TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-03-11 16:02:08,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-03-11 16:02:08,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 282. [2021-03-11 16:02:08,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 2.213523131672598) internal successors, (622), 281 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 622 transitions. [2021-03-11 16:02:08,214 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 622 transitions. Word has length 23 [2021-03-11 16:02:08,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:08,214 INFO L480 AbstractCegarLoop]: Abstraction has 282 states and 622 transitions. [2021-03-11 16:02:08,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,215 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 622 transitions. [2021-03-11 16:02:08,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-03-11 16:02:08,215 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:08,215 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] [2021-03-11 16:02:08,215 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 16:02:08,216 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:02:08,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:08,216 INFO L82 PathProgramCache]: Analyzing trace with hash -281625936, now seen corresponding path program 8 times [2021-03-11 16:02:08,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:08,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040994882] [2021-03-11 16:02:08,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:08,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:08,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:08,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 16:02:08,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 16:02:08,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:08,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:08,251 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 16:02:08,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040994882] [2021-03-11 16:02:08,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:08,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 16:02:08,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57010194] [2021-03-11 16:02:08,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 16:02:08,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:08,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 16:02:08,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 16:02:08,253 INFO L87 Difference]: Start difference. First operand 282 states and 622 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:08,327 INFO L93 Difference]: Finished difference Result 327 states and 710 transitions. [2021-03-11 16:02:08,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 16:02:08,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-03-11 16:02:08,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:08,331 INFO L225 Difference]: With dead ends: 327 [2021-03-11 16:02:08,331 INFO L226 Difference]: Without dead ends: 272 [2021-03-11 16:02:08,332 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 38.9ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-03-11 16:02:08,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-03-11 16:02:08,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 246. [2021-03-11 16:02:08,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 2.1877551020408164) internal successors, (536), 245 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 536 transitions. [2021-03-11 16:02:08,338 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 536 transitions. Word has length 23 [2021-03-11 16:02:08,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:08,338 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 536 transitions. [2021-03-11 16:02:08,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,338 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 536 transitions. [2021-03-11 16:02:08,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-03-11 16:02:08,340 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:08,340 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] [2021-03-11 16:02:08,340 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 16:02:08,340 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:02:08,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:08,340 INFO L82 PathProgramCache]: Analyzing trace with hash -332388222, now seen corresponding path program 9 times [2021-03-11 16:02:08,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:08,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545841868] [2021-03-11 16:02:08,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:08,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:08,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:08,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:08,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 16:02:08,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 16:02:08,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:08,411 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 16:02:08,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545841868] [2021-03-11 16:02:08,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:08,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 16:02:08,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114646190] [2021-03-11 16:02:08,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 16:02:08,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:08,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 16:02:08,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 16:02:08,413 INFO L87 Difference]: Start difference. First operand 246 states and 536 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:08,491 INFO L93 Difference]: Finished difference Result 299 states and 618 transitions. [2021-03-11 16:02:08,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 16:02:08,491 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-03-11 16:02:08,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:08,492 INFO L225 Difference]: With dead ends: 299 [2021-03-11 16:02:08,492 INFO L226 Difference]: Without dead ends: 261 [2021-03-11 16:02:08,493 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 58.0ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-03-11 16:02:08,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-03-11 16:02:08,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 214. [2021-03-11 16:02:08,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 2.23943661971831) internal successors, (477), 213 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 477 transitions. [2021-03-11 16:02:08,497 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 477 transitions. Word has length 23 [2021-03-11 16:02:08,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:08,497 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 477 transitions. [2021-03-11 16:02:08,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,497 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 477 transitions. [2021-03-11 16:02:08,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-03-11 16:02:08,498 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:08,498 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] [2021-03-11 16:02:08,498 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 16:02:08,498 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:02:08,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:08,498 INFO L82 PathProgramCache]: Analyzing trace with hash 765528906, now seen corresponding path program 10 times [2021-03-11 16:02:08,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:08,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396657846] [2021-03-11 16:02:08,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:08,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:08,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:08,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:08,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 16:02:08,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 16:02:08,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:08,533 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 16:02:08,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396657846] [2021-03-11 16:02:08,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:08,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 16:02:08,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533717526] [2021-03-11 16:02:08,534 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 16:02:08,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:08,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 16:02:08,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 16:02:08,534 INFO L87 Difference]: Start difference. First operand 214 states and 477 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:08,607 INFO L93 Difference]: Finished difference Result 262 states and 540 transitions. [2021-03-11 16:02:08,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 16:02:08,608 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-03-11 16:02:08,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:08,609 INFO L225 Difference]: With dead ends: 262 [2021-03-11 16:02:08,609 INFO L226 Difference]: Without dead ends: 238 [2021-03-11 16:02:08,609 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 56.6ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-03-11 16:02:08,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-03-11 16:02:08,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 207. [2021-03-11 16:02:08,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 2.2427184466019416) internal successors, (462), 206 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 462 transitions. [2021-03-11 16:02:08,613 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 462 transitions. Word has length 23 [2021-03-11 16:02:08,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:08,613 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 462 transitions. [2021-03-11 16:02:08,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,614 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 462 transitions. [2021-03-11 16:02:08,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-03-11 16:02:08,614 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:08,614 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] [2021-03-11 16:02:08,614 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 16:02:08,614 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:02:08,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:08,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1434050014, now seen corresponding path program 11 times [2021-03-11 16:02:08,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:08,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75802282] [2021-03-11 16:02:08,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:08,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:08,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:08,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 16:02:08,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 16:02:08,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:08,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:08,649 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 16:02:08,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75802282] [2021-03-11 16:02:08,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:08,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 16:02:08,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333663972] [2021-03-11 16:02:08,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 16:02:08,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:08,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 16:02:08,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 16:02:08,651 INFO L87 Difference]: Start difference. First operand 207 states and 462 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:08,706 INFO L93 Difference]: Finished difference Result 241 states and 527 transitions. [2021-03-11 16:02:08,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 16:02:08,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-03-11 16:02:08,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:08,710 INFO L225 Difference]: With dead ends: 241 [2021-03-11 16:02:08,710 INFO L226 Difference]: Without dead ends: 222 [2021-03-11 16:02:08,711 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 37.0ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-03-11 16:02:08,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-03-11 16:02:08,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 211. [2021-03-11 16:02:08,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 2.2285714285714286) internal successors, (468), 210 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 468 transitions. [2021-03-11 16:02:08,716 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 468 transitions. Word has length 23 [2021-03-11 16:02:08,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:08,717 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 468 transitions. [2021-03-11 16:02:08,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,717 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 468 transitions. [2021-03-11 16:02:08,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-03-11 16:02:08,718 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:08,718 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] [2021-03-11 16:02:08,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 16:02:08,719 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:02:08,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:08,719 INFO L82 PathProgramCache]: Analyzing trace with hash -925685704, now seen corresponding path program 12 times [2021-03-11 16:02:08,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:08,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903495879] [2021-03-11 16:02:08,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:08,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:08,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:08,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 16:02:08,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 16:02:08,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 16:02:08,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:08,778 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 16:02:08,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903495879] [2021-03-11 16:02:08,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:08,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 16:02:08,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391378956] [2021-03-11 16:02:08,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 16:02:08,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:08,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 16:02:08,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 16:02:08,779 INFO L87 Difference]: Start difference. First operand 211 states and 468 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:08,832 INFO L93 Difference]: Finished difference Result 232 states and 503 transitions. [2021-03-11 16:02:08,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 16:02:08,832 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-03-11 16:02:08,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:08,833 INFO L225 Difference]: With dead ends: 232 [2021-03-11 16:02:08,833 INFO L226 Difference]: Without dead ends: 218 [2021-03-11 16:02:08,833 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 37.2ms TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-03-11 16:02:08,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-03-11 16:02:08,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 207. [2021-03-11 16:02:08,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 2.2233009708737863) internal successors, (458), 206 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 458 transitions. [2021-03-11 16:02:08,837 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 458 transitions. Word has length 23 [2021-03-11 16:02:08,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:08,837 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 458 transitions. [2021-03-11 16:02:08,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,837 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 458 transitions. [2021-03-11 16:02:08,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-03-11 16:02:08,838 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:08,838 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] [2021-03-11 16:02:08,838 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 16:02:08,838 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:02:08,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:08,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1511196076, now seen corresponding path program 13 times [2021-03-11 16:02:08,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:08,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211362485] [2021-03-11 16:02:08,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [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 3 [2021-03-11 16:02:08,853 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 3 [2021-03-11 16:02:08,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 16:02:08,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 16:02:08,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 16:02:08,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:08,874 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 16:02:08,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211362485] [2021-03-11 16:02:08,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:08,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 16:02:08,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346006449] [2021-03-11 16:02:08,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 16:02:08,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:08,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 16:02:08,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 16:02:08,876 INFO L87 Difference]: Start difference. First operand 207 states and 458 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:08,930 INFO L93 Difference]: Finished difference Result 239 states and 506 transitions. [2021-03-11 16:02:08,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 16:02:08,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-03-11 16:02:08,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:08,931 INFO L225 Difference]: With dead ends: 239 [2021-03-11 16:02:08,931 INFO L226 Difference]: Without dead ends: 175 [2021-03-11 16:02:08,931 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 33.3ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-03-11 16:02:08,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-03-11 16:02:08,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 153. [2021-03-11 16:02:08,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 2.2171052631578947) internal successors, (337), 152 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 337 transitions. [2021-03-11 16:02:08,934 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 337 transitions. Word has length 23 [2021-03-11 16:02:08,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:08,934 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 337 transitions. [2021-03-11 16:02:08,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,934 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 337 transitions. [2021-03-11 16:02:08,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-03-11 16:02:08,935 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:08,935 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] [2021-03-11 16:02:08,935 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-11 16:02:08,935 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:02:08,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:08,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1958457696, now seen corresponding path program 14 times [2021-03-11 16:02:08,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:08,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937275083] [2021-03-11 16:02:08,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:08,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:02:08,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:02:08,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:02:08,951 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 16:02:08,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937275083] [2021-03-11 16:02:08,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:08,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 16:02:08,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845986610] [2021-03-11 16:02:08,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 16:02:08,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:08,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 16:02:08,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 16:02:08,953 INFO L87 Difference]: Start difference. First operand 153 states and 337 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:08,957 INFO L93 Difference]: Finished difference Result 153 states and 334 transitions. [2021-03-11 16:02:08,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 16:02:08,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-03-11 16:02:08,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:08,959 INFO L225 Difference]: With dead ends: 153 [2021-03-11 16:02:08,959 INFO L226 Difference]: Without dead ends: 153 [2021-03-11 16:02:08,959 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 16:02:08,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-03-11 16:02:08,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-03-11 16:02:08,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 2.1973684210526314) internal successors, (334), 152 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 334 transitions. [2021-03-11 16:02:08,963 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 334 transitions. Word has length 23 [2021-03-11 16:02:08,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:08,963 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 334 transitions. [2021-03-11 16:02:08,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:08,963 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 334 transitions. [2021-03-11 16:02:08,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-03-11 16:02:08,964 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:08,964 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] [2021-03-11 16:02:08,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-11 16:02:08,964 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:02:08,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:08,964 INFO L82 PathProgramCache]: Analyzing trace with hash -277604636, now seen corresponding path program 15 times [2021-03-11 16:02:08,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:08,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937569321] [2021-03-11 16:02:08,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:08,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:08,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:08,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:02:09,038 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 16:02:09,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937569321] [2021-03-11 16:02:09,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:09,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 16:02:09,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104678194] [2021-03-11 16:02:09,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 16:02:09,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:09,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 16:02:09,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 16:02:09,039 INFO L87 Difference]: Start difference. First operand 153 states and 334 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:09,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:09,126 INFO L93 Difference]: Finished difference Result 389 states and 835 transitions. [2021-03-11 16:02:09,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 16:02:09,127 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-03-11 16:02:09,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:09,128 INFO L225 Difference]: With dead ends: 389 [2021-03-11 16:02:09,128 INFO L226 Difference]: Without dead ends: 377 [2021-03-11 16:02:09,128 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 79.6ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-03-11 16:02:09,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-03-11 16:02:09,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 168. [2021-03-11 16:02:09,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 2.18562874251497) internal successors, (365), 167 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:09,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 365 transitions. [2021-03-11 16:02:09,132 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 365 transitions. Word has length 23 [2021-03-11 16:02:09,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:09,132 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 365 transitions. [2021-03-11 16:02:09,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:09,133 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 365 transitions. [2021-03-11 16:02:09,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-03-11 16:02:09,133 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:09,133 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] [2021-03-11 16:02:09,133 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-11 16:02:09,133 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:02:09,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:09,133 INFO L82 PathProgramCache]: Analyzing trace with hash -995172636, now seen corresponding path program 16 times [2021-03-11 16:02:09,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:09,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493803464] [2021-03-11 16:02:09,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:09,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,171 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-03-11 16:02:09,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:02:09,182 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 16:02:09,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493803464] [2021-03-11 16:02:09,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:09,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 16:02:09,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577469143] [2021-03-11 16:02:09,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 16:02:09,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:09,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 16:02:09,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 16:02:09,183 INFO L87 Difference]: Start difference. First operand 168 states and 365 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:09,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:09,284 INFO L93 Difference]: Finished difference Result 350 states and 743 transitions. [2021-03-11 16:02:09,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 16:02:09,284 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-03-11 16:02:09,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:09,285 INFO L225 Difference]: With dead ends: 350 [2021-03-11 16:02:09,285 INFO L226 Difference]: Without dead ends: 320 [2021-03-11 16:02:09,285 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 82.6ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-03-11 16:02:09,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-03-11 16:02:09,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 150. [2021-03-11 16:02:09,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.1879194630872485) internal successors, (326), 149 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:09,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 326 transitions. [2021-03-11 16:02:09,289 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 326 transitions. Word has length 23 [2021-03-11 16:02:09,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:09,289 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 326 transitions. [2021-03-11 16:02:09,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:09,289 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 326 transitions. [2021-03-11 16:02:09,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-03-11 16:02:09,290 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:09,291 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] [2021-03-11 16:02:09,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-11 16:02:09,291 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:02:09,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:09,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1700177476, now seen corresponding path program 17 times [2021-03-11 16:02:09,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:09,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362357069] [2021-03-11 16:02:09,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:09,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:09,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:09,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:09,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 16:02:09,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:02:09,331 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 16:02:09,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362357069] [2021-03-11 16:02:09,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:09,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 16:02:09,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13993463] [2021-03-11 16:02:09,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 16:02:09,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:09,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 16:02:09,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-11 16:02:09,334 INFO L87 Difference]: Start difference. First operand 150 states and 326 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:09,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:09,386 INFO L93 Difference]: Finished difference Result 262 states and 556 transitions. [2021-03-11 16:02:09,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 16:02:09,387 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-03-11 16:02:09,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:09,387 INFO L225 Difference]: With dead ends: 262 [2021-03-11 16:02:09,387 INFO L226 Difference]: Without dead ends: 206 [2021-03-11 16:02:09,388 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 44.0ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-03-11 16:02:09,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-03-11 16:02:09,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 121. [2021-03-11 16:02:09,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 2.15) internal successors, (258), 120 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:09,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 258 transitions. [2021-03-11 16:02:09,392 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 258 transitions. Word has length 23 [2021-03-11 16:02:09,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:09,392 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 258 transitions. [2021-03-11 16:02:09,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:09,392 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 258 transitions. [2021-03-11 16:02:09,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-03-11 16:02:09,393 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:09,393 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] [2021-03-11 16:02:09,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-11 16:02:09,393 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:02:09,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:09,393 INFO L82 PathProgramCache]: Analyzing trace with hash 188010110, now seen corresponding path program 18 times [2021-03-11 16:02:09,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:09,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905003496] [2021-03-11 16:02:09,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:09,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:09,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:09,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 16:02:09,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 16:02:09,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:02:09,442 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 16:02:09,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905003496] [2021-03-11 16:02:09,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:09,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 16:02:09,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600494782] [2021-03-11 16:02:09,444 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 16:02:09,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:09,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 16:02:09,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-11 16:02:09,445 INFO L87 Difference]: Start difference. First operand 121 states and 258 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:09,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:09,495 INFO L93 Difference]: Finished difference Result 148 states and 309 transitions. [2021-03-11 16:02:09,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 16:02:09,495 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-03-11 16:02:09,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:09,496 INFO L225 Difference]: With dead ends: 148 [2021-03-11 16:02:09,496 INFO L226 Difference]: Without dead ends: 100 [2021-03-11 16:02:09,496 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 55.7ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-03-11 16:02:09,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-03-11 16:02:09,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-03-11 16:02:09,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.0707070707070705) internal successors, (205), 99 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:09,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 205 transitions. [2021-03-11 16:02:09,498 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 205 transitions. Word has length 23 [2021-03-11 16:02:09,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:09,498 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 205 transitions. [2021-03-11 16:02:09,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:09,499 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 205 transitions. [2021-03-11 16:02:09,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-03-11 16:02:09,499 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:09,499 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] [2021-03-11 16:02:09,499 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-11 16:02:09,499 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:02:09,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:09,499 INFO L82 PathProgramCache]: Analyzing trace with hash 645811556, now seen corresponding path program 19 times [2021-03-11 16:02:09,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:09,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805466157] [2021-03-11 16:02:09,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:09,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,558 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-03-11 16:02:09,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 16:02:09,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:02:09,570 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 16:02:09,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805466157] [2021-03-11 16:02:09,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:09,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 16:02:09,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416883720] [2021-03-11 16:02:09,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 16:02:09,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:09,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 16:02:09,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 16:02:09,572 INFO L87 Difference]: Start difference. First operand 100 states and 205 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:09,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:09,648 INFO L93 Difference]: Finished difference Result 157 states and 333 transitions. [2021-03-11 16:02:09,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 16:02:09,648 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-03-11 16:02:09,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:09,649 INFO L225 Difference]: With dead ends: 157 [2021-03-11 16:02:09,649 INFO L226 Difference]: Without dead ends: 145 [2021-03-11 16:02:09,650 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 84.1ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-03-11 16:02:09,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-03-11 16:02:09,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 112. [2021-03-11 16:02:09,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.081081081081081) internal successors, (231), 111 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:09,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 231 transitions. [2021-03-11 16:02:09,652 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 231 transitions. Word has length 23 [2021-03-11 16:02:09,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:09,652 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 231 transitions. [2021-03-11 16:02:09,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:09,652 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 231 transitions. [2021-03-11 16:02:09,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-03-11 16:02:09,653 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:09,653 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] [2021-03-11 16:02:09,653 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-11 16:02:09,653 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:02:09,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:09,653 INFO L82 PathProgramCache]: Analyzing trace with hash -71756444, now seen corresponding path program 20 times [2021-03-11 16:02:09,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:09,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255247480] [2021-03-11 16:02:09,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:09,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 16:02:09,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:02:09,710 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 16:02:09,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255247480] [2021-03-11 16:02:09,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:09,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 16:02:09,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276891242] [2021-03-11 16:02:09,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 16:02:09,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:09,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 16:02:09,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 16:02:09,711 INFO L87 Difference]: Start difference. First operand 112 states and 231 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:09,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:09,781 INFO L93 Difference]: Finished difference Result 124 states and 251 transitions. [2021-03-11 16:02:09,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 16:02:09,782 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-03-11 16:02:09,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:09,782 INFO L225 Difference]: With dead ends: 124 [2021-03-11 16:02:09,782 INFO L226 Difference]: Without dead ends: 97 [2021-03-11 16:02:09,782 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 81.6ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-03-11 16:02:09,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-03-11 16:02:09,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-03-11 16:02:09,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 2.0520833333333335) internal successors, (197), 96 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:09,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 197 transitions. [2021-03-11 16:02:09,784 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 197 transitions. Word has length 23 [2021-03-11 16:02:09,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:09,784 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 197 transitions. [2021-03-11 16:02:09,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:09,785 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 197 transitions. [2021-03-11 16:02:09,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-03-11 16:02:09,785 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:09,785 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] [2021-03-11 16:02:09,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-11 16:02:09,785 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:02:09,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:09,785 INFO L82 PathProgramCache]: Analyzing trace with hash 941904460, now seen corresponding path program 21 times [2021-03-11 16:02:09,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:09,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217263444] [2021-03-11 16:02:09,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:09,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:02:09,842 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 16:02:09,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217263444] [2021-03-11 16:02:09,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:09,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 16:02:09,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257596583] [2021-03-11 16:02:09,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 16:02:09,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:09,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 16:02:09,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 16:02:09,843 INFO L87 Difference]: Start difference. First operand 97 states and 197 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:09,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:09,909 INFO L93 Difference]: Finished difference Result 97 states and 191 transitions. [2021-03-11 16:02:09,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 16:02:09,910 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-03-11 16:02:09,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:09,910 INFO L225 Difference]: With dead ends: 97 [2021-03-11 16:02:09,910 INFO L226 Difference]: Without dead ends: 85 [2021-03-11 16:02:09,910 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 78.4ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-03-11 16:02:09,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-03-11 16:02:09,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-03-11 16:02:09,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.9642857142857142) internal successors, (165), 84 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:09,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 165 transitions. [2021-03-11 16:02:09,912 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 165 transitions. Word has length 23 [2021-03-11 16:02:09,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:09,913 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 165 transitions. [2021-03-11 16:02:09,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:09,913 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 165 transitions. [2021-03-11 16:02:09,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-03-11 16:02:09,913 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:02:09,914 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] [2021-03-11 16:02:09,914 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-11 16:02:09,914 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:02:09,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:02:09,914 INFO L82 PathProgramCache]: Analyzing trace with hash 224336460, now seen corresponding path program 22 times [2021-03-11 16:02:09,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:02:09,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669791497] [2021-03-11 16:02:09,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:02:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:02:09,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,968 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-03-11 16:02:09,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:02:09,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:02:09,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 16:02:09,979 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 16:02:09,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669791497] [2021-03-11 16:02:09,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:02:09,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 16:02:09,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588199144] [2021-03-11 16:02:09,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 16:02:09,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:02:09,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 16:02:09,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 16:02:09,980 INFO L87 Difference]: Start difference. First operand 85 states and 165 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:10,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:02:10,037 INFO L93 Difference]: Finished difference Result 39 states and 69 transitions. [2021-03-11 16:02:10,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 16:02:10,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-03-11 16:02:10,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:02:10,038 INFO L225 Difference]: With dead ends: 39 [2021-03-11 16:02:10,038 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 16:02:10,038 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 77.0ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-03-11 16:02:10,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 16:02:10,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 16:02:10,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:10,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 16:02:10,039 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2021-03-11 16:02:10,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:02:10,039 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 16:02:10,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:02:10,041 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 16:02:10,041 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 16:02:10,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-11 16:02:10,044 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 04:02:10 BasicIcfg [2021-03-11 16:02:10,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 16:02:10,046 INFO L168 Benchmark]: Toolchain (without parser) took 4071.87 ms. Allocated memory was 367.0 MB in the beginning and 440.4 MB in the end (delta: 73.4 MB). Free memory was 347.4 MB in the beginning and 285.5 MB in the end (delta: 61.8 MB). Peak memory consumption was 136.8 MB. Max. memory is 16.0 GB. [2021-03-11 16:02:10,046 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 367.0 MB. Free memory was 348.5 MB in the beginning and 348.5 MB in the end (delta: 76.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 16:02:10,046 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.22 ms. Allocated memory is still 367.0 MB. Free memory was 346.9 MB in the beginning and 345.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 16:02:10,046 INFO L168 Benchmark]: Boogie Preprocessor took 17.04 ms. Allocated memory is still 367.0 MB. Free memory was 345.4 MB in the beginning and 344.5 MB in the end (delta: 928.1 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-11 16:02:10,046 INFO L168 Benchmark]: RCFGBuilder took 294.31 ms. Allocated memory is still 367.0 MB. Free memory was 344.4 MB in the beginning and 332.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-11 16:02:10,046 INFO L168 Benchmark]: TraceAbstraction took 3726.49 ms. Allocated memory was 367.0 MB in the beginning and 440.4 MB in the end (delta: 73.4 MB). Free memory was 331.7 MB in the beginning and 285.5 MB in the end (delta: 46.2 MB). Peak memory consumption was 120.0 MB. Max. memory is 16.0 GB. [2021-03-11 16:02:10,047 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 0.15 ms. Allocated memory is still 367.0 MB. Free memory was 348.5 MB in the beginning and 348.5 MB in the end (delta: 76.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.22 ms. Allocated memory is still 367.0 MB. Free memory was 346.9 MB in the beginning and 345.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.04 ms. Allocated memory is still 367.0 MB. Free memory was 345.4 MB in the beginning and 344.5 MB in the end (delta: 928.1 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * RCFGBuilder took 294.31 ms. Allocated memory is still 367.0 MB. Free memory was 344.4 MB in the beginning and 332.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3726.49 ms. Allocated memory was 367.0 MB in the beginning and 440.4 MB in the end (delta: 73.4 MB). Free memory was 331.7 MB in the beginning and 285.5 MB in the end (delta: 46.2 MB). Peak memory consumption was 120.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 413.2ms, 51 PlacesBefore, 37 PlacesAfterwards, 41 TransitionsBefore, 27 TransitionsAfterwards, 412 CoEnabledTransitionPairs, 3 FixpointIterations, 7 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 15 TotalNumberOfCompositions, 1378 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 930, positive: 830, positive conditional: 0, positive unconditional: 830, negative: 100, negative conditional: 0, negative unconditional: 100, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 370, positive: 337, positive conditional: 0, positive unconditional: 337, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 370, positive: 330, positive conditional: 0, positive unconditional: 330, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 40, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 117, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 99, negative conditional: 0, negative unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 930, positive: 493, positive conditional: 0, positive unconditional: 493, negative: 67, negative conditional: 0, negative unconditional: 67, unknown: 370, unknown conditional: 0, unknown unconditional: 370] , Statistics on independence cache: Total cache size (in pairs): 164, Positive cache size: 145, Positive conditional cache size: 0, Positive unconditional cache size: 145, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - PositiveResult [Line: 71]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3655.8ms, OverallIterations: 22, TraceHistogramMax: 1, EmptinessCheckTime: 24.6ms, AutomataDifference: 1647.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 467.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 862 SDtfs, 1416 SDslu, 2452 SDs, 0 SdLazy, 1176 SolverSat, 153 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 526.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 225 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1247.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred in iteration=7, InterpolantAutomatonStates: 181, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 139.9ms AutomataMinimizationTime, 22 MinimizatonAttempts, 1525 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.6ms SsaConstructionTime, 121.8ms SatisfiabilityAnalysisTime, 1047.3ms InterpolantComputationTime, 506 NumberOfCodeBlocks, 506 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 484 ConstructedInterpolants, 0 QuantifiedInterpolants, 1802 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 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 proved your program to be correct! Received shutdown request...