/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.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-12 19:24:24,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-12 19:24:24,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-12 19:24:24,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-12 19:24:24,974 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.epf [2021-08-12 19:24:25,003 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-12 19:24:25,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-12 19:24:25,004 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-12 19:24:25,005 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-12 19:24:25,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-12 19:24:25,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-12 19:24:25,007 INFO L138 SettingsManager]: * Use SBE=true [2021-08-12 19:24:25,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-12 19:24:25,007 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-12 19:24:25,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-12 19:24:25,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-12 19:24:25,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-12 19:24:25,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-12 19:24:25,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-12 19:24:25,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-12 19:24:25,009 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-12 19:24:25,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-12 19:24:25,009 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-12 19:24:25,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-12 19:24:25,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-12 19:24:25,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-12 19:24:25,009 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-12 19:24:25,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-12 19:24:25,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 19:24:25,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-12 19:24:25,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-12 19:24:25,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-12 19:24:25,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-12 19:24:25,010 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-12 19:24:25,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-12 19:24:25,010 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-12 19:24:25,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-12 19:24:25,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-12 19:24:25,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-12 19:24:25,279 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-12 19:24:25,280 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-12 19:24:25,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl [2021-08-12 19:24:25,280 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl' [2021-08-12 19:24:25,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-12 19:24:25,306 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-12 19:24:25,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-12 19:24:25,307 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-12 19:24:25,307 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-12 19:24:25,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:24:25" (1/1) ... [2021-08-12 19:24:25,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:24:25" (1/1) ... [2021-08-12 19:24:25,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-12 19:24:25,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-12 19:24:25,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-12 19:24:25,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-12 19:24:25,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:24:25" (1/1) ... [2021-08-12 19:24:25,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:24:25" (1/1) ... [2021-08-12 19:24:25,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:24:25" (1/1) ... [2021-08-12 19:24:25,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:24:25" (1/1) ... [2021-08-12 19:24:25,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:24:25" (1/1) ... [2021-08-12 19:24:25,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:24:25" (1/1) ... [2021-08-12 19:24:25,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:24:25" (1/1) ... [2021-08-12 19:24:25,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-12 19:24:25,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-12 19:24:25,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-12 19:24:25,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-12 19:24:25,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:24:25" (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 [2021-08-12 19:24:25,413 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-12 19:24:25,414 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-12 19:24:25,415 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-12 19:24:25,415 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-12 19:24:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-12 19:24:25,415 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-12 19:24:25,415 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-12 19:24:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-12 19:24:25,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-12 19:24:25,416 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-12 19:24:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-12 19:24:25,416 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-12 19:24:25,416 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-08-12 19:24:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-08-12 19:24:25,416 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-08-12 19:24:25,416 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-08-12 19:24:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-08-12 19:24:25,416 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-08-12 19:24:25,417 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-08-12 19:24:25,417 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-08-12 19:24:25,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-08-12 19:24:25,418 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-12 19:24:25,645 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-12 19:24:25,646 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-12 19:24:25,647 INFO L202 PluginConnector]: Adding new model ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 07:24:25 BoogieIcfgContainer [2021-08-12 19:24:25,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-12 19:24:25,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-12 19:24:25,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-12 19:24:25,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-12 19:24:25,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:24:25" (1/2) ... [2021-08-12 19:24:25,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a8c89e and model type ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 07:24:25, skipping insertion in model container [2021-08-12 19:24:25,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 07:24:25" (2/2) ... [2021-08-12 19:24:25,652 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-6.wvr.bpl [2021-08-12 19:24:25,655 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-12 19:24:25,655 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-12 19:24:25,656 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-12 19:24:25,742 INFO L149 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-08-12 19:24:25,756 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-12 19:24:25,769 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 19:24:25,769 INFO L379 AbstractCegarLoop]: Hoare is true [2021-08-12 19:24:25,769 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 19:24:25,769 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 19:24:25,769 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 19:24:25,769 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 19:24:25,769 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 19:24:25,769 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 19:24:25,792 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 54 transitions, 156 flow [2021-08-12 19:24:42,299 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 74654 states, 74652 states have (on average 5.020736216042437) internal successors, (374808), 74653 states have internal predecessors, (374808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 19:24:42,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 74654 states, 74652 states have (on average 5.020736216042437) internal successors, (374808), 74653 states have internal predecessors, (374808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 19:24:43,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-12 19:24:43,342 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:24:43,343 INFO L550 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] [2021-08-12 19:24:43,344 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:24:43,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:24:43,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1505096666, now seen corresponding path program 1 times [2021-08-12 19:24:43,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:24:43,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491673487] [2021-08-12 19:24:43,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:24:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:24:43,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:24:43,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:24:43,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491673487] [2021-08-12 19:24:43,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491673487] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:24:43,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:24:43,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 19:24:43,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465436224] [2021-08-12 19:24:43,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-12 19:24:43,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:24:43,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-12 19:24:43,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-12 19:24:43,649 INFO L87 Difference]: Start difference. First operand has 74654 states, 74652 states have (on average 5.020736216042437) internal successors, (374808), 74653 states have internal predecessors, (374808), 0 states have call successors, (0), 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 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 19:24:48,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:24:48,215 INFO L93 Difference]: Finished difference Result 250895 states and 1238127 transitions. [2021-08-12 19:24:48,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-12 19:24:48,217 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-08-12 19:24:48,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:24:49,883 INFO L225 Difference]: With dead ends: 250895 [2021-08-12 19:24:49,897 INFO L226 Difference]: Without dead ends: 201088 [2021-08-12 19:24:50,058 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 24.2ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-12 19:24:51,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201088 states. [2021-08-12 19:24:56,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201088 to 100373. [2021-08-12 19:24:56,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100373 states, 100372 states have (on average 4.930000398517515) internal successors, (494834), 100372 states have internal predecessors, (494834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 19:24:57,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100373 states to 100373 states and 494834 transitions. [2021-08-12 19:24:57,263 INFO L78 Accepts]: Start accepts. Automaton has 100373 states and 494834 transitions. Word has length 46 [2021-08-12 19:24:57,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:24:57,264 INFO L482 AbstractCegarLoop]: Abstraction has 100373 states and 494834 transitions. [2021-08-12 19:24:57,264 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 19:24:57,264 INFO L276 IsEmpty]: Start isEmpty. Operand 100373 states and 494834 transitions. [2021-08-12 19:24:57,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-12 19:24:57,930 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:24:57,931 INFO L550 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] [2021-08-12 19:24:57,934 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-12 19:24:57,934 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:24:57,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:24:57,937 INFO L82 PathProgramCache]: Analyzing trace with hash 2046490878, now seen corresponding path program 2 times [2021-08-12 19:24:57,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:24:57,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103742168] [2021-08-12 19:24:57,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:24:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:24:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:24:58,007 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:24:58,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103742168] [2021-08-12 19:24:58,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103742168] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:24:58,007 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:24:58,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-12 19:24:58,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732474116] [2021-08-12 19:24:58,008 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-12 19:24:58,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:24:58,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-12 19:24:58,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-12 19:24:58,009 INFO L87 Difference]: Start difference. First operand 100373 states and 494834 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 19:25:02,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:25:02,854 INFO L93 Difference]: Finished difference Result 295032 states and 1438520 transitions. [2021-08-12 19:25:02,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-12 19:25:02,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-08-12 19:25:02,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:25:04,411 INFO L225 Difference]: With dead ends: 295032 [2021-08-12 19:25:04,411 INFO L226 Difference]: Without dead ends: 237543 [2021-08-12 19:25:04,560 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 19.7ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-12 19:25:05,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237543 states. [2021-08-12 19:25:10,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237543 to 124242. [2021-08-12 19:25:11,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124242 states, 124241 states have (on average 4.865503336257757) internal successors, (604495), 124241 states have internal predecessors, (604495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 19:25:11,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124242 states to 124242 states and 604495 transitions. [2021-08-12 19:25:12,100 INFO L78 Accepts]: Start accepts. Automaton has 124242 states and 604495 transitions. Word has length 46 [2021-08-12 19:25:12,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:25:12,101 INFO L482 AbstractCegarLoop]: Abstraction has 124242 states and 604495 transitions. [2021-08-12 19:25:12,101 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 19:25:12,101 INFO L276 IsEmpty]: Start isEmpty. Operand 124242 states and 604495 transitions. [2021-08-12 19:25:12,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-12 19:25:12,756 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:25:12,756 INFO L550 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] [2021-08-12 19:25:12,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-12 19:25:12,757 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:25:12,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:25:12,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1539776996, now seen corresponding path program 3 times [2021-08-12 19:25:12,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:25:12,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454453085] [2021-08-12 19:25:12,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:25:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:25:12,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:25:12,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:25:12,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454453085] [2021-08-12 19:25:12,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454453085] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:25:12,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:25:12,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 19:25:12,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549996765] [2021-08-12 19:25:12,838 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 19:25:12,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:25:12,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 19:25:12,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-12 19:25:12,838 INFO L87 Difference]: Start difference. First operand 124242 states and 604495 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 19:25:18,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:25:18,899 INFO L93 Difference]: Finished difference Result 281562 states and 1362001 transitions. [2021-08-12 19:25:18,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 19:25:18,900 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-08-12 19:25:18,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:25:20,678 INFO L225 Difference]: With dead ends: 281562 [2021-08-12 19:25:20,678 INFO L226 Difference]: Without dead ends: 232977 [2021-08-12 19:25:20,866 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 41.1ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-12 19:25:22,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232977 states. [2021-08-12 19:25:27,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232977 to 140760. [2021-08-12 19:25:27,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140760 states, 140759 states have (on average 4.84867752683665) internal successors, (682495), 140759 states have internal predecessors, (682495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 19:25:28,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140760 states to 140760 states and 682495 transitions. [2021-08-12 19:25:28,855 INFO L78 Accepts]: Start accepts. Automaton has 140760 states and 682495 transitions. Word has length 46 [2021-08-12 19:25:28,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:25:28,856 INFO L482 AbstractCegarLoop]: Abstraction has 140760 states and 682495 transitions. [2021-08-12 19:25:28,856 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 19:25:28,856 INFO L276 IsEmpty]: Start isEmpty. Operand 140760 states and 682495 transitions. [2021-08-12 19:25:29,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-12 19:25:29,575 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:25:29,576 INFO L550 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] [2021-08-12 19:25:29,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-12 19:25:29,576 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:25:29,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:25:29,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1869124714, now seen corresponding path program 4 times [2021-08-12 19:25:29,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:25:29,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443534999] [2021-08-12 19:25:29,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:25:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:25:29,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:25:29,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:25:29,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443534999] [2021-08-12 19:25:29,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443534999] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:25:29,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:25:29,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 19:25:29,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190895020] [2021-08-12 19:25:29,640 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-12 19:25:29,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:25:29,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-12 19:25:29,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-08-12 19:25:29,640 INFO L87 Difference]: Start difference. First operand 140760 states and 682495 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 19:25:35,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:25:35,879 INFO L93 Difference]: Finished difference Result 249388 states and 1204533 transitions. [2021-08-12 19:25:35,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-12 19:25:35,879 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-08-12 19:25:35,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:25:37,880 INFO L225 Difference]: With dead ends: 249388 [2021-08-12 19:25:37,880 INFO L226 Difference]: Without dead ends: 207060 [2021-08-12 19:25:37,987 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 29.4ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-08-12 19:25:39,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207060 states. [2021-08-12 19:25:45,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207060 to 146091. [2021-08-12 19:25:45,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146091 states, 146090 states have (on average 4.832856458347594) internal successors, (706032), 146090 states have internal predecessors, (706032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 19:25:46,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146091 states to 146091 states and 706032 transitions. [2021-08-12 19:25:47,089 INFO L78 Accepts]: Start accepts. Automaton has 146091 states and 706032 transitions. Word has length 46 [2021-08-12 19:25:47,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:25:47,090 INFO L482 AbstractCegarLoop]: Abstraction has 146091 states and 706032 transitions. [2021-08-12 19:25:47,090 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 19:25:47,090 INFO L276 IsEmpty]: Start isEmpty. Operand 146091 states and 706032 transitions. [2021-08-12 19:25:47,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-12 19:25:47,544 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:25:47,545 INFO L550 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] [2021-08-12 19:25:47,545 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-12 19:25:47,545 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:25:47,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:25:47,545 INFO L82 PathProgramCache]: Analyzing trace with hash -813595456, now seen corresponding path program 5 times [2021-08-12 19:25:47,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:25:47,546 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354227707] [2021-08-12 19:25:47,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:25:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:25:47,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:25:47,604 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:25:47,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354227707] [2021-08-12 19:25:47,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354227707] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:25:47,604 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:25:47,604 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 19:25:47,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381467326] [2021-08-12 19:25:47,605 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 19:25:47,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:25:47,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 19:25:47,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-12 19:25:47,605 INFO L87 Difference]: Start difference. First operand 146091 states and 706032 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 19:25:57,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:25:57,192 INFO L93 Difference]: Finished difference Result 347884 states and 1674032 transitions. [2021-08-12 19:25:57,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-12 19:25:57,192 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-08-12 19:25:57,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:25:59,255 INFO L225 Difference]: With dead ends: 347884 [2021-08-12 19:25:59,255 INFO L226 Difference]: Without dead ends: 271147 [2021-08-12 19:25:59,468 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 34.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-12 19:26:00,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271147 states. [2021-08-12 19:26:08,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271147 to 164447. [2021-08-12 19:26:08,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164447 states, 164446 states have (on average 4.712294613429332) internal successors, (774918), 164446 states have internal predecessors, (774918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 19:26:09,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164447 states to 164447 states and 774918 transitions. [2021-08-12 19:26:09,888 INFO L78 Accepts]: Start accepts. Automaton has 164447 states and 774918 transitions. Word has length 46 [2021-08-12 19:26:09,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:26:09,888 INFO L482 AbstractCegarLoop]: Abstraction has 164447 states and 774918 transitions. [2021-08-12 19:26:09,889 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 19:26:09,889 INFO L276 IsEmpty]: Start isEmpty. Operand 164447 states and 774918 transitions. [2021-08-12 19:26:10,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-12 19:26:10,680 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:26:10,680 INFO L550 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] [2021-08-12 19:26:10,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-12 19:26:10,680 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:26:10,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:26:10,681 INFO L82 PathProgramCache]: Analyzing trace with hash 39659516, now seen corresponding path program 6 times [2021-08-12 19:26:10,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:26:10,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849015058] [2021-08-12 19:26:10,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:26:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:26:10,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:26:10,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:26:10,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849015058] [2021-08-12 19:26:10,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849015058] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:26:10,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:26:10,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 19:26:10,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883435181] [2021-08-12 19:26:10,792 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-12 19:26:10,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:26:10,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-12 19:26:10,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-08-12 19:26:10,793 INFO L87 Difference]: Start difference. First operand 164447 states and 774918 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 19:26:20,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:26:20,948 INFO L93 Difference]: Finished difference Result 351216 states and 1658912 transitions. [2021-08-12 19:26:20,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-12 19:26:20,949 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-08-12 19:26:20,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:26:23,002 INFO L225 Difference]: With dead ends: 351216 [2021-08-12 19:26:23,003 INFO L226 Difference]: Without dead ends: 281393 [2021-08-12 19:26:23,183 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 42.8ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-08-12 19:26:24,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281393 states. [2021-08-12 19:26:32,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281393 to 185569. [2021-08-12 19:26:32,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185569 states, 185568 states have (on average 4.64495494912916) internal successors, (861955), 185568 states have internal predecessors, (861955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)