/usr/bin/java -Xmx8000000000 -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-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-4.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 23:01:03,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 23:01:03,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 23:01:03,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-09 23:01:03,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 23:01:03,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 23:01:03,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 23:01:03,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 23:01:03,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 23:01:03,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 23:01:03,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 23:01:03,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 23:01:03,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 23:01:03,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 23:01:03,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 23:01:03,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 23:01:03,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-09 23:01:03,399 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-NoLbe-Delay.epf [2021-07-09 23:01:03,441 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 23:01:03,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 23:01:03,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 23:01:03,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 23:01:03,442 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 23:01:03,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 23:01:03,442 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 23:01:03,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 23:01:03,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 23:01:03,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 23:01:03,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 23:01:03,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 23:01:03,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 23:01:03,443 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 23:01:03,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 23:01:03,443 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 23:01:03,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 23:01:03,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 23:01:03,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 23:01:03,444 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 23:01:03,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 23:01:03,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 23:01:03,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 23:01:03,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 23:01:03,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 23:01:03,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 23:01:03,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 23:01:03,445 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 23:01:03,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 23:01:03,445 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-09 23:01:03,445 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 23:01:03,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 23:01:03,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 23:01:03,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 23:01:03,772 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 23:01:03,773 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 23:01:03,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-4.wvr.bpl [2021-07-09 23:01:03,774 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-4.wvr.bpl' [2021-07-09 23:01:03,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 23:01:03,804 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 23:01:03,806 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 23:01:03,806 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 23:01:03,806 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 23:01:03,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:03" (1/1) ... [2021-07-09 23:01:03,821 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:03" (1/1) ... [2021-07-09 23:01:03,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 23:01:03,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 23:01:03,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 23:01:03,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 23:01:03,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:03" (1/1) ... [2021-07-09 23:01:03,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:03" (1/1) ... [2021-07-09 23:01:03,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:03" (1/1) ... [2021-07-09 23:01:03,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:03" (1/1) ... [2021-07-09 23:01:03,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:03" (1/1) ... [2021-07-09 23:01:03,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:03" (1/1) ... [2021-07-09 23:01:03,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:03" (1/1) ... [2021-07-09 23:01:03,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 23:01:03,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 23:01:03,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 23:01:03,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 23:01:03,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:03" (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 [2021-07-09 23:01:03,894 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 23:01:03,894 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 23:01:03,894 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 23:01:03,895 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 23:01:03,895 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 23:01:03,895 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 23:01:03,895 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 23:01:03,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 23:01:03,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 23:01:03,896 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-09 23:01:03,896 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-09 23:01:03,896 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-09 23:01:03,896 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-07-09 23:01:03,896 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-07-09 23:01:03,896 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-07-09 23:01:03,898 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 23:01:04,139 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 23:01:04,140 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-09 23:01:04,141 INFO L202 PluginConnector]: Adding new model bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 11:01:04 BoogieIcfgContainer [2021-07-09 23:01:04,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 23:01:04,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 23:01:04,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 23:01:04,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 23:01:04,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:03" (1/2) ... [2021-07-09 23:01:04,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12442dac and model type bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 11:01:04, skipping insertion in model container [2021-07-09 23:01:04,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 11:01:04" (2/2) ... [2021-07-09 23:01:04,175 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-4.wvr.bpl [2021-07-09 23:01:04,178 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 23:01:04,178 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 23:01:04,179 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 23:01:04,179 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 23:01:04,240 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-07-09 23:01:04,284 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-07-09 23:01:04,304 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 23:01:04,305 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 23:01:04,305 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 23:01:04,305 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 23:01:04,305 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 23:01:04,305 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 23:01:04,305 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 23:01:04,305 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 23:01:10,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 93964 states, 84120 states have (on average 2.9741203043271516) internal successors, (250183), 93963 states have internal predecessors, (250183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:11,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-07-09 23:01:11,147 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:01:11,148 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:01:11,148 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:01:11,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:01:11,152 INFO L82 PathProgramCache]: Analyzing trace with hash 797040745, now seen corresponding path program 1 times [2021-07-09 23:01:11,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:01:11,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273524913] [2021-07-09 23:01:11,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:01:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:01:11,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:11,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:11,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:11,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:11,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:11,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:11,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:01:11,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:01:11,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273524913] [2021-07-09 23:01:11,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273524913] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:01:11,266 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:01:11,266 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 23:01:11,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917656734] [2021-07-09 23:01:11,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 23:01:11,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:01:11,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 23:01:11,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:01:11,418 INFO L87 Difference]: Start difference. First operand has 93964 states, 84120 states have (on average 2.9741203043271516) internal successors, (250183), 93963 states have internal predecessors, (250183), 0 states have call successors, (0), 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 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:12,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:01:12,641 INFO L93 Difference]: Finished difference Result 93964 states and 246724 transitions. [2021-07-09 23:01:12,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 23:01:12,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-07-09 23:01:12,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:01:13,036 INFO L225 Difference]: With dead ends: 93964 [2021-07-09 23:01:13,036 INFO L226 Difference]: Without dead ends: 76287 [2021-07-09 23:01:13,037 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:01:22,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76287 states. [2021-07-09 23:01:25,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76287 to 76287. [2021-07-09 23:01:25,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76287 states, 76286 states have (on average 2.9089741236924205) internal successors, (221914), 76286 states have internal predecessors, (221914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:26,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76287 states to 76287 states and 221914 transitions. [2021-07-09 23:01:26,169 INFO L78 Accepts]: Start accepts. Automaton has 76287 states and 221914 transitions. Word has length 75 [2021-07-09 23:01:26,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:01:26,172 INFO L482 AbstractCegarLoop]: Abstraction has 76287 states and 221914 transitions. [2021-07-09 23:01:26,172 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:26,173 INFO L276 IsEmpty]: Start isEmpty. Operand 76287 states and 221914 transitions. [2021-07-09 23:01:26,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-07-09 23:01:26,401 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:01:26,401 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:01:26,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 23:01:26,402 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:01:26,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:01:26,402 INFO L82 PathProgramCache]: Analyzing trace with hash -435899745, now seen corresponding path program 2 times [2021-07-09 23:01:26,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:01:26,403 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661658983] [2021-07-09 23:01:26,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:01:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:01:26,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:26,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:26,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:26,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:26,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:26,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:26,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:01:26,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:01:26,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661658983] [2021-07-09 23:01:26,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661658983] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:01:26,443 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:01:26,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 23:01:26,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138123796] [2021-07-09 23:01:26,444 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 23:01:26,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:01:26,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 23:01:26,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:01:26,445 INFO L87 Difference]: Start difference. First operand 76287 states and 221914 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:27,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:01:27,161 INFO L93 Difference]: Finished difference Result 76287 states and 218457 transitions. [2021-07-09 23:01:27,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 23:01:27,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-07-09 23:01:27,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:01:27,563 INFO L225 Difference]: With dead ends: 76287 [2021-07-09 23:01:27,563 INFO L226 Difference]: Without dead ends: 76287 [2021-07-09 23:01:27,564 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:01:37,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76287 states. [2021-07-09 23:01:38,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76287 to 76287. [2021-07-09 23:01:38,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76287 states, 76286 states have (on average 2.863657814015678) internal successors, (218457), 76286 states have internal predecessors, (218457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:39,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76287 states to 76287 states and 218457 transitions. [2021-07-09 23:01:39,544 INFO L78 Accepts]: Start accepts. Automaton has 76287 states and 218457 transitions. Word has length 75 [2021-07-09 23:01:39,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:01:39,545 INFO L482 AbstractCegarLoop]: Abstraction has 76287 states and 218457 transitions. [2021-07-09 23:01:39,545 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:39,545 INFO L276 IsEmpty]: Start isEmpty. Operand 76287 states and 218457 transitions. [2021-07-09 23:01:39,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-07-09 23:01:39,747 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:01:39,748 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:01:39,748 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 23:01:39,748 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:01:39,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:01:39,749 INFO L82 PathProgramCache]: Analyzing trace with hash 2099006721, now seen corresponding path program 3 times [2021-07-09 23:01:39,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:01:39,762 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474843378] [2021-07-09 23:01:39,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:01:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:01:40,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:40,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:01:40,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:40,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:01:40,071 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-07-09 23:01:40,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-09 23:01:40,075 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-07-09 23:01:40,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:01:40,078 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-07-09 23:01:40,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-07-09 23:01:40,097 INFO L142 QuantifierPusher]: treesize reduction 23, result has 56.6 percent of original size [2021-07-09 23:01:40,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-07-09 23:01:40,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:40,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-07-09 23:01:40,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:40,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-07-09 23:01:40,131 INFO L142 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size [2021-07-09 23:01:40,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-09 23:01:40,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:40,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:40,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:01:40,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:01:40,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474843378] [2021-07-09 23:01:40,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474843378] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:01:40,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:01:40,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 23:01:40,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237552224] [2021-07-09 23:01:40,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 23:01:40,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:01:40,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 23:01:40,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-07-09 23:01:40,147 INFO L87 Difference]: Start difference. First operand 76287 states and 218457 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:41,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:01:41,880 INFO L93 Difference]: Finished difference Result 150063 states and 440218 transitions. [2021-07-09 23:01:41,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 23:01:41,880 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-07-09 23:01:41,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:01:42,732 INFO L225 Difference]: With dead ends: 150063 [2021-07-09 23:01:42,732 INFO L226 Difference]: Without dead ends: 150063 [2021-07-09 23:01:42,733 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 93.0ms TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2021-07-09 23:01:56,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150063 states. [2021-07-09 23:01:59,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150063 to 93361. [2021-07-09 23:01:59,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93361 states, 93360 states have (on average 2.918444730077121) internal successors, (272466), 93360 states have internal predecessors, (272466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:59,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93361 states to 93361 states and 272466 transitions. [2021-07-09 23:01:59,738 INFO L78 Accepts]: Start accepts. Automaton has 93361 states and 272466 transitions. Word has length 75 [2021-07-09 23:01:59,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:01:59,738 INFO L482 AbstractCegarLoop]: Abstraction has 93361 states and 272466 transitions. [2021-07-09 23:01:59,738 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:59,739 INFO L276 IsEmpty]: Start isEmpty. Operand 93361 states and 272466 transitions. [2021-07-09 23:01:59,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-07-09 23:01:59,927 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:01:59,927 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:01:59,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 23:01:59,928 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:01:59,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:01:59,928 INFO L82 PathProgramCache]: Analyzing trace with hash -603640221, now seen corresponding path program 4 times [2021-07-09 23:01:59,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:01:59,928 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21152029] [2021-07-09 23:01:59,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:01:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:01:59,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:01:59,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:01:59,990 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-07-09 23:01:59,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-09 23:01:59,994 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-07-09 23:01:59,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:02:00,001 INFO L142 QuantifierPusher]: treesize reduction 42, result has 38.2 percent of original size [2021-07-09 23:02:00,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-07-09 23:02:00,403 WARN L205 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 9 [2021-07-09 23:02:00,405 INFO L142 QuantifierPusher]: treesize reduction 17, result has 29.2 percent of original size [2021-07-09 23:02:00,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:02:00,414 INFO L142 QuantifierPusher]: treesize reduction 8, result has 52.9 percent of original size [2021-07-09 23:02:00,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:02:00,428 INFO L142 QuantifierPusher]: treesize reduction 10, result has 41.2 percent of original size [2021-07-09 23:02:00,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:02:00,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:02:00,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:02:00,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:02:00,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21152029] [2021-07-09 23:02:00,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21152029] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:02:00,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:02:00,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 23:02:00,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794876201] [2021-07-09 23:02:00,444 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 23:02:00,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:02:00,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 23:02:00,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-07-09 23:02:00,446 INFO L87 Difference]: Start difference. First operand 93361 states and 272466 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:02:02,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:02:02,571 INFO L93 Difference]: Finished difference Result 263653 states and 790663 transitions. [2021-07-09 23:02:02,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 23:02:02,572 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-07-09 23:02:02,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:02:04,064 INFO L225 Difference]: With dead ends: 263653 [2021-07-09 23:02:04,065 INFO L226 Difference]: Without dead ends: 263603 [2021-07-09 23:02:04,065 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 494.3ms TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-07-09 23:02:23,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263603 states. [2021-07-09 23:02:27,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263603 to 113711. [2021-07-09 23:02:27,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113711 states, 113710 states have (on average 2.955764664497406) internal successors, (336100), 113710 states have internal predecessors, (336100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:02:28,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113711 states to 113711 states and 336100 transitions. [2021-07-09 23:02:28,249 INFO L78 Accepts]: Start accepts. Automaton has 113711 states and 336100 transitions. Word has length 75 [2021-07-09 23:02:28,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:02:28,250 INFO L482 AbstractCegarLoop]: Abstraction has 113711 states and 336100 transitions. [2021-07-09 23:02:28,250 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:02:28,251 INFO L276 IsEmpty]: Start isEmpty. Operand 113711 states and 336100 transitions. [2021-07-09 23:02:29,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-07-09 23:02:29,223 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:02:29,223 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:02:29,223 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 23:02:29,223 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:02:29,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:02:29,224 INFO L82 PathProgramCache]: Analyzing trace with hash -19596701, now seen corresponding path program 5 times [2021-07-09 23:02:29,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:02:29,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857063924] [2021-07-09 23:02:29,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:02:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:02:29,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:29,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:02:29,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:29,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:02:29,307 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-07-09 23:02:29,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-09 23:02:29,310 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-07-09 23:02:29,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:02:29,312 INFO L142 QuantifierPusher]: treesize reduction 49, result has 5.8 percent of original size [2021-07-09 23:02:29,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:02:29,313 INFO L142 QuantifierPusher]: treesize reduction 49, result has 26.9 percent of original size [2021-07-09 23:02:29,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-07-09 23:02:29,319 INFO L142 QuantifierPusher]: treesize reduction 74, result has 45.6 percent of original size [2021-07-09 23:02:29,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-07-09 23:02:29,336 INFO L142 QuantifierPusher]: treesize reduction 43, result has 46.3 percent of original size [2021-07-09 23:02:29,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-07-09 23:02:29,341 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.9 percent of original size [2021-07-09 23:02:29,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-07-09 23:02:29,355 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.9 percent of original size [2021-07-09 23:02:29,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-07-09 23:02:29,370 INFO L142 QuantifierPusher]: treesize reduction 28, result has 50.0 percent of original size [2021-07-09 23:02:29,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-07-09 23:02:29,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:29,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:02:29,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:02:29,385 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:02:29,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857063924] [2021-07-09 23:02:29,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857063924] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:02:29,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:02:29,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 23:02:29,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192719589] [2021-07-09 23:02:29,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 23:02:29,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:02:29,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 23:02:29,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-07-09 23:02:29,386 INFO L87 Difference]: Start difference. First operand 113711 states and 336100 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:02:31,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:02:31,742 INFO L93 Difference]: Finished difference Result 258142 states and 768631 transitions. [2021-07-09 23:02:31,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 23:02:31,742 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-07-09 23:02:31,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:02:33,075 INFO L225 Difference]: With dead ends: 258142 [2021-07-09 23:02:33,076 INFO L226 Difference]: Without dead ends: 258101 [2021-07-09 23:02:33,076 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 99.7ms TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2021-07-09 23:02:53,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258101 states. [2021-07-09 23:02:57,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258101 to 148576. [2021-07-09 23:02:57,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148576 states, 148575 states have (on average 3.010082449941107) internal successors, (447223), 148575 states have internal predecessors, (447223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:02:58,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148576 states to 148576 states and 447223 transitions. [2021-07-09 23:02:58,106 INFO L78 Accepts]: Start accepts. Automaton has 148576 states and 447223 transitions. Word has length 75 [2021-07-09 23:02:58,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:02:58,106 INFO L482 AbstractCegarLoop]: Abstraction has 148576 states and 447223 transitions. [2021-07-09 23:02:58,106 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:02:58,106 INFO L276 IsEmpty]: Start isEmpty. Operand 148576 states and 447223 transitions. [2021-07-09 23:02:58,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-07-09 23:02:58,814 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:02:58,814 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:02:58,815 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 23:02:58,815 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:02:58,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:02:58,816 INFO L82 PathProgramCache]: Analyzing trace with hash -2080480321, now seen corresponding path program 6 times [2021-07-09 23:02:58,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:02:58,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212715671] [2021-07-09 23:02:58,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:02:58,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:02:58,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:58,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:02:58,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:59,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:02:59,003 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-07-09 23:02:59,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-09 23:02:59,006 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-07-09 23:02:59,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:02:59,008 INFO L142 QuantifierPusher]: treesize reduction 117, result has 5.6 percent of original size [2021-07-09 23:02:59,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:02:59,014 INFO L142 QuantifierPusher]: treesize reduction 36, result has 29.4 percent of original size [2021-07-09 23:02:59,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-09 23:02:59,042 INFO L142 QuantifierPusher]: treesize reduction 82, result has 42.7 percent of original size [2021-07-09 23:02:59,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-07-09 23:02:59,069 INFO L142 QuantifierPusher]: treesize reduction 17, result has 46.9 percent of original size [2021-07-09 23:02:59,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-09 23:02:59,086 INFO L142 QuantifierPusher]: treesize reduction 15, result has 50.0 percent of original size [2021-07-09 23:02:59,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-09 23:02:59,091 INFO L142 QuantifierPusher]: treesize reduction 22, result has 40.5 percent of original size [2021-07-09 23:02:59,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-09 23:02:59,106 INFO L142 QuantifierPusher]: treesize reduction 46, result has 33.3 percent of original size [2021-07-09 23:02:59,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-09 23:02:59,122 INFO L142 QuantifierPusher]: treesize reduction 41, result has 2.4 percent of original size [2021-07-09 23:02:59,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:02:59,123 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-07-09 23:02:59,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:02:59,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:59,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:02:59,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:02:59,137 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:02:59,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212715671] [2021-07-09 23:02:59,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212715671] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:02:59,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:02:59,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 23:02:59,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292404776] [2021-07-09 23:02:59,137 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 23:02:59,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:02:59,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 23:02:59,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-07-09 23:02:59,138 INFO L87 Difference]: Start difference. First operand 148576 states and 447223 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:03:04,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:03:04,261 INFO L93 Difference]: Finished difference Result 540853 states and 1658337 transitions. [2021-07-09 23:03:04,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-07-09 23:03:04,261 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-07-09 23:03:04,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:03:08,078 INFO L225 Difference]: With dead ends: 540853 [2021-07-09 23:03:08,078 INFO L226 Difference]: Without dead ends: 540853 [2021-07-09 23:03:08,079 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 297.2ms TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2021-07-09 23:03:42,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540853 states. [2021-07-09 23:03:50,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540853 to 195112. [2021-07-09 23:03:50,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195112 states, 195111 states have (on average 3.0272101521697907) internal successors, (590642), 195111 states have internal predecessors, (590642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:03:51,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195112 states to 195112 states and 590642 transitions. [2021-07-09 23:03:51,678 INFO L78 Accepts]: Start accepts. Automaton has 195112 states and 590642 transitions. Word has length 75 [2021-07-09 23:03:51,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:03:51,680 INFO L482 AbstractCegarLoop]: Abstraction has 195112 states and 590642 transitions. [2021-07-09 23:03:51,680 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:03:51,680 INFO L276 IsEmpty]: Start isEmpty. Operand 195112 states and 590642 transitions. [2021-07-09 23:03:52,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-07-09 23:03:52,471 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:03:52,471 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:03:52,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 23:03:52,472 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:03:52,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:03:52,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1976723647, now seen corresponding path program 7 times [2021-07-09 23:03:52,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:03:52,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887439656] [2021-07-09 23:03:52,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:03:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:03:52,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:03:52,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 23:03:52,597 INFO L142 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-07-09 23:03:52,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 23:03:52,601 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-07-09 23:03:52,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:03:52,617 INFO L142 QuantifierPusher]: treesize reduction 22, result has 40.5 percent of original size [2021-07-09 23:03:52,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-09 23:03:52,620 INFO L142 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-07-09 23:03:52,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:03:52,628 INFO L142 QuantifierPusher]: treesize reduction 44, result has 45.0 percent of original size [2021-07-09 23:03:52,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-07-09 23:03:52,653 INFO L142 QuantifierPusher]: treesize reduction 21, result has 61.1 percent of original size [2021-07-09 23:03:52,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-07-09 23:03:52,668 INFO L142 QuantifierPusher]: treesize reduction 39, result has 44.3 percent of original size [2021-07-09 23:03:52,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-07-09 23:03:52,674 INFO L142 QuantifierPusher]: treesize reduction 43, result has 41.9 percent of original size [2021-07-09 23:03:52,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-07-09 23:03:52,679 INFO L142 QuantifierPusher]: treesize reduction 23, result has 51.1 percent of original size [2021-07-09 23:03:52,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-09 23:03:52,693 INFO L142 QuantifierPusher]: treesize reduction 23, result has 51.1 percent of original size [2021-07-09 23:03:52,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-09 23:03:52,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:03:52,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-07-09 23:03:52,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:03:52,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-07-09 23:03:52,721 INFO L142 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size [2021-07-09 23:03:52,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-07-09 23:03:52,735 INFO L142 QuantifierPusher]: treesize reduction 50, result has 20.6 percent of original size [2021-07-09 23:03:52,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:03:52,746 INFO L142 QuantifierPusher]: treesize reduction 36, result has 2.7 percent of original size [2021-07-09 23:03:52,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:03:52,747 INFO L142 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-07-09 23:03:52,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:03:52,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:03:52,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:03:52,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:03:52,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:03:52,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887439656] [2021-07-09 23:03:52,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887439656] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:03:52,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:03:52,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-07-09 23:03:52,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826875298] [2021-07-09 23:03:52,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-09 23:03:52,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:03:52,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-09 23:03:52,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-07-09 23:03:52,749 INFO L87 Difference]: Start difference. First operand 195112 states and 590642 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:03:55,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:03:55,850 INFO L93 Difference]: Finished difference Result 344391 states and 1028077 transitions. [2021-07-09 23:03:55,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-09 23:03:55,850 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-07-09 23:03:55,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:03:58,740 INFO L225 Difference]: With dead ends: 344391 [2021-07-09 23:03:58,740 INFO L226 Difference]: Without dead ends: 344388 [2021-07-09 23:03:58,741 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 201.0ms TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-07-09 23:04:22,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344388 states. [2021-07-09 23:04:28,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344388 to 218400. [2021-07-09 23:04:28,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218400 states, 218399 states have (on average 3.0522117775264537) internal successors, (666600), 218399 states have internal predecessors, (666600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:04:29,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218400 states to 218400 states and 666600 transitions. [2021-07-09 23:04:29,696 INFO L78 Accepts]: Start accepts. Automaton has 218400 states and 666600 transitions. Word has length 75 [2021-07-09 23:04:29,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:04:29,696 INFO L482 AbstractCegarLoop]: Abstraction has 218400 states and 666600 transitions. [2021-07-09 23:04:29,696 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:04:29,697 INFO L276 IsEmpty]: Start isEmpty. Operand 218400 states and 666600 transitions. [2021-07-09 23:04:30,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-07-09 23:04:30,590 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:04:30,590 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:04:30,590 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-09 23:04:30,590 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:04:30,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:04:30,590 INFO L82 PathProgramCache]: Analyzing trace with hash -981237603, now seen corresponding path program 8 times [2021-07-09 23:04:30,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:04:30,591 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159596811] [2021-07-09 23:04:30,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:04:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:04:30,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:04:30,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-07-09 23:04:30,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:04:30,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-07-09 23:04:30,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:04:30,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 23:04:30,638 INFO L142 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size [2021-07-09 23:04:30,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 23:04:30,641 INFO L142 QuantifierPusher]: treesize reduction 14, result has 53.3 percent of original size [2021-07-09 23:04:30,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:04:30,652 INFO L142 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-07-09 23:04:30,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:04:30,662 INFO L142 QuantifierPusher]: treesize reduction 30, result has 25.0 percent of original size [2021-07-09 23:04:30,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:04:30,671 INFO L142 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-07-09 23:04:30,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:04:30,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:04:30,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:04:30,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:04:30,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:04:30,680 INFO L142 QuantifierPusher]: treesize reduction 13, result has 58.1 percent of original size [2021-07-09 23:04:30,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-07-09 23:04:30,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:04:30,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:04:30,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:04:30,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:04:30,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:04:30,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:04:30,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:04:30,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:04:30,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:04:30,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:04:30,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:04:30,723 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:04:30,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159596811] [2021-07-09 23:04:30,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159596811] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:04:30,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:04:30,724 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-07-09 23:04:30,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184488067] [2021-07-09 23:04:30,724 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-09 23:04:30,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:04:30,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-09 23:04:30,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-07-09 23:04:30,725 INFO L87 Difference]: Start difference. First operand 218400 states and 666600 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:04:35,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:04:35,312 INFO L93 Difference]: Finished difference Result 525118 states and 1630466 transitions. [2021-07-09 23:04:35,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-09 23:04:35,313 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-07-09 23:04:35,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:04:38,137 INFO L225 Difference]: With dead ends: 525118 [2021-07-09 23:04:38,137 INFO L226 Difference]: Without dead ends: 525118 [2021-07-09 23:04:38,139 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 294.0ms TimeCoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2021-07-09 23:05:11,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525118 states. [2021-07-09 23:05:23,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525118 to 280335. [2021-07-09 23:05:24,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280335 states, 280334 states have (on average 3.0633387316558105) internal successors, (858758), 280334 states have internal predecessors, (858758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:27,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280335 states to 280335 states and 858758 transitions. [2021-07-09 23:05:27,297 INFO L78 Accepts]: Start accepts. Automaton has 280335 states and 858758 transitions. Word has length 75 [2021-07-09 23:05:27,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:05:27,297 INFO L482 AbstractCegarLoop]: Abstraction has 280335 states and 858758 transitions. [2021-07-09 23:05:27,297 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:27,297 INFO L276 IsEmpty]: Start isEmpty. Operand 280335 states and 858758 transitions. [2021-07-09 23:05:28,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-07-09 23:05:28,109 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:05:28,109 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:05:28,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-09 23:05:28,109 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:05:28,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:05:28,110 INFO L82 PathProgramCache]: Analyzing trace with hash -844742561, now seen corresponding path program 9 times [2021-07-09 23:05:28,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:05:28,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495236875] [2021-07-09 23:05:28,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:05:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:05:28,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:28,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:05:28,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:28,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:05:28,491 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-07-09 23:05:28,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-09 23:05:28,494 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-07-09 23:05:28,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:05:28,497 INFO L142 QuantifierPusher]: treesize reduction 47, result has 31.9 percent of original size [2021-07-09 23:05:28,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-07-09 23:05:28,514 INFO L142 QuantifierPusher]: treesize reduction 68, result has 39.8 percent of original size [2021-07-09 23:05:28,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-07-09 23:05:28,522 INFO L142 QuantifierPusher]: treesize reduction 78, result has 50.0 percent of original size [2021-07-09 23:05:28,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-07-09 23:05:28,543 INFO L142 QuantifierPusher]: treesize reduction 29, result has 70.7 percent of original size [2021-07-09 23:05:28,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-07-09 23:05:28,564 INFO L142 QuantifierPusher]: treesize reduction 10, result has 83.6 percent of original size [2021-07-09 23:05:28,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-07-09 23:05:28,585 INFO L142 QuantifierPusher]: treesize reduction 21, result has 78.1 percent of original size [2021-07-09 23:05:28,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-07-09 23:05:28,610 INFO L142 QuantifierPusher]: treesize reduction 26, result has 58.7 percent of original size [2021-07-09 23:05:28,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-07-09 23:05:28,635 INFO L142 QuantifierPusher]: treesize reduction 19, result has 59.6 percent of original size [2021-07-09 23:05:28,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-07-09 23:05:28,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:28,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:05:28,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:05:28,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:05:28,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495236875] [2021-07-09 23:05:28,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495236875] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:05:28,653 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:05:28,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-09 23:05:28,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371555105] [2021-07-09 23:05:28,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-09 23:05:28,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:05:28,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-09 23:05:28,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:05:28,654 INFO L87 Difference]: Start difference. First operand 280335 states and 858758 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:05:36,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:05:36,781 INFO L93 Difference]: Finished difference Result 796975 states and 2432265 transitions. [2021-07-09 23:05:36,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-09 23:05:36,782 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-07-09 23:05:36,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:05:44,085 INFO L225 Difference]: With dead ends: 796975 [2021-07-09 23:05:44,085 INFO L226 Difference]: Without dead ends: 786508 [2021-07-09 23:05:44,085 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 385.2ms TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2021-07-09 23:06:38,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786508 states. [2021-07-09 23:06:54,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786508 to 312344. [2021-07-09 23:06:54,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312344 states, 312343 states have (on average 3.087567193758144) internal successors, (964380), 312343 states have internal predecessors, (964380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:06:56,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312344 states to 312344 states and 964380 transitions. [2021-07-09 23:06:56,852 INFO L78 Accepts]: Start accepts. Automaton has 312344 states and 964380 transitions. Word has length 75 [2021-07-09 23:06:56,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:06:56,853 INFO L482 AbstractCegarLoop]: Abstraction has 312344 states and 964380 transitions. [2021-07-09 23:06:56,853 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:06:56,853 INFO L276 IsEmpty]: Start isEmpty. Operand 312344 states and 964380 transitions. [2021-07-09 23:06:58,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-07-09 23:06:58,558 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:06:58,559 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:06:58,559 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-09 23:06:58,559 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:06:58,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:06:58,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1853381829, now seen corresponding path program 10 times [2021-07-09 23:06:58,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:06:58,559 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987987597] [2021-07-09 23:06:58,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:06:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:06:58,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:06:58,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:06:58,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:06:58,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:06:58,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:06:58,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:06:58,750 INFO L142 QuantifierPusher]: treesize reduction 12, result has 50.0 percent of original size [2021-07-09 23:06:58,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-09 23:06:58,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:06:58,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:06:58,764 INFO L142 QuantifierPusher]: treesize reduction 86, result has 29.5 percent of original size [2021-07-09 23:06:58,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-07-09 23:06:58,789 INFO L142 QuantifierPusher]: treesize reduction 59, result has 39.8 percent of original size [2021-07-09 23:06:58,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-07-09 23:06:58,813 INFO L142 QuantifierPusher]: treesize reduction 108, result has 20.6 percent of original size [2021-07-09 23:06:58,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-07-09 23:06:58,830 INFO L142 QuantifierPusher]: treesize reduction 121, result has 18.8 percent of original size [2021-07-09 23:06:58,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-07-09 23:06:58,833 INFO L142 QuantifierPusher]: treesize reduction 116, result has 37.0 percent of original size [2021-07-09 23:06:58,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-07-09 23:06:58,841 INFO L142 QuantifierPusher]: treesize reduction 64, result has 38.5 percent of original size [2021-07-09 23:06:58,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-07-09 23:06:58,880 INFO L142 QuantifierPusher]: treesize reduction 47, result has 34.7 percent of original size [2021-07-09 23:06:58,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-07-09 23:06:58,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:06:58,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-07-09 23:06:58,934 INFO L142 QuantifierPusher]: treesize reduction 32, result has 48.4 percent of original size [2021-07-09 23:06:58,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-07-09 23:06:58,961 INFO L142 QuantifierPusher]: treesize reduction 34, result has 50.0 percent of original size [2021-07-09 23:06:58,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-07-09 23:06:59,021 INFO L142 QuantifierPusher]: treesize reduction 70, result has 25.5 percent of original size [2021-07-09 23:06:59,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-09 23:06:59,040 INFO L142 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-07-09 23:06:59,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:06:59,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:06:59,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:06:59,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:06:59,041 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:06:59,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987987597] [2021-07-09 23:06:59,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987987597] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:06:59,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:06:59,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-07-09 23:06:59,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434427058] [2021-07-09 23:06:59,056 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-09 23:06:59,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:06:59,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-09 23:06:59,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-07-09 23:06:59,057 INFO L87 Difference]: Start difference. First operand 312344 states and 964380 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:06:59,447 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19