/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/mcr/example_9.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 17:07:35,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 17:07:35,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 17:07:35,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-01 17:07:35,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-01 17:07:35,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-01 17:07:35,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-01 17:07:35,242 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 [2022-03-01 17:07:35,268 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 17:07:35,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 17:07:35,268 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 17:07:35,269 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 17:07:35,269 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 17:07:35,269 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 17:07:35,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 17:07:35,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 17:07:35,270 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 17:07:35,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 17:07:35,271 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 17:07:35,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 17:07:35,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 17:07:35,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 17:07:35,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 17:07:35,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 17:07:35,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 17:07:35,272 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 17:07:35,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 17:07:35,272 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 17:07:35,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 17:07:35,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 17:07:35,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 17:07:35,273 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 17:07:35,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 17:07:35,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 17:07:35,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 17:07:35,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 17:07:35,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 17:07:35,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 17:07:35,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 17:07:35,274 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 17:07:35,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 17:07:35,275 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 17:07:35,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 17:07:35,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 17:07:35,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 17:07:35,520 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-01 17:07:35,523 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-01 17:07:35,524 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl [2022-03-01 17:07:35,524 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl' [2022-03-01 17:07:35,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 17:07:35,550 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-01 17:07:35,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 17:07:35,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 17:07:35,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 17:07:35,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:07:35" (1/1) ... [2022-03-01 17:07:35,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:07:35" (1/1) ... [2022-03-01 17:07:35,572 INFO L137 Inliner]: procedures = 10, calls = 9, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-01 17:07:35,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 17:07:35,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 17:07:35,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 17:07:35,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 17:07:35,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:07:35" (1/1) ... [2022-03-01 17:07:35,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:07:35" (1/1) ... [2022-03-01 17:07:35,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:07:35" (1/1) ... [2022-03-01 17:07:35,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:07:35" (1/1) ... [2022-03-01 17:07:35,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:07:35" (1/1) ... [2022-03-01 17:07:35,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:07:35" (1/1) ... [2022-03-01 17:07:35,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:07:35" (1/1) ... [2022-03-01 17:07:35,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 17:07:35,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 17:07:35,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 17:07:35,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 17:07:35,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:07:35" (1/1) ... [2022-03-01 17:07:35,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 17:07:35,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:07:35,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-01 17:07:35,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-01 17:07:35,667 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2022-03-01 17:07:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2022-03-01 17:07:35,667 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2022-03-01 17:07:35,667 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2022-03-01 17:07:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2022-03-01 17:07:35,668 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2022-03-01 17:07:35,668 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2022-03-01 17:07:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2022-03-01 17:07:35,668 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2022-03-01 17:07:35,668 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2022-03-01 17:07:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2022-03-01 17:07:35,668 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2022-03-01 17:07:35,668 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2022-03-01 17:07:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2022-03-01 17:07:35,668 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2022-03-01 17:07:35,669 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-01 17:07:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 17:07:35,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 17:07:35,669 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2022-03-01 17:07:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2022-03-01 17:07:35,669 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2022-03-01 17:07:35,669 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2022-03-01 17:07:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2022-03-01 17:07:35,670 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2022-03-01 17:07:35,670 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2022-03-01 17:07:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2022-03-01 17:07:35,670 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2022-03-01 17:07:35,670 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2022-03-01 17:07:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2022-03-01 17:07:35,670 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2022-03-01 17:07:35,671 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 17:07:35,712 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 17:07:35,713 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 17:07:35,825 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 17:07:35,831 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 17:07:35,831 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-01 17:07:35,833 INFO L202 PluginConnector]: Adding new model example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 05:07:35 BoogieIcfgContainer [2022-03-01 17:07:35,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 17:07:35,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 17:07:35,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 17:07:35,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 17:07:35,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:07:35" (1/2) ... [2022-03-01 17:07:35,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d82555 and model type example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 05:07:35, skipping insertion in model container [2022-03-01 17:07:35,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 05:07:35" (2/2) ... [2022-03-01 17:07:35,844 INFO L111 eAbstractionObserver]: Analyzing ICFG example_9.bpl [2022-03-01 17:07:35,850 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 17:07:35,850 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 17:07:35,850 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 17:07:35,851 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 17:07:35,936 INFO L148 ThreadInstanceAdder]: Constructed 81 joinOtherThreadTransitions. [2022-03-01 17:07:36,016 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 17:07:36,024 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-01 17:07:36,025 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-03-01 17:07:36,035 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 76 places, 120 transitions, 528 flow [2022-03-01 17:07:53,009 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 271986 states, 271985 states have (on average 6.7228780998952145) internal successors, (1828522), 271985 states have internal predecessors, (1828522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:07:53,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 271986 states, 271985 states have (on average 6.7228780998952145) internal successors, (1828522), 271985 states have internal predecessors, (1828522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:07:56,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-01 17:07:56,720 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:56,721 INFO L514 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] [2022-03-01 17:07:56,722 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 6 more)] === [2022-03-01 17:07:56,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:56,748 INFO L85 PathProgramCache]: Analyzing trace with hash -35739592, now seen corresponding path program 1 times [2022-03-01 17:07:56,755 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:56,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339257879] [2022-03-01 17:07:56,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:56,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:56,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:56,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:56,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339257879] [2022-03-01 17:07:56,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339257879] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:56,884 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:56,884 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 17:07:56,885 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612999628] [2022-03-01 17:07:56,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:56,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 17:07:56,889 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:56,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 17:07:56,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:07:57,993 INFO L87 Difference]: Start difference. First operand has 271986 states, 271985 states have (on average 6.7228780998952145) internal successors, (1828522), 271985 states have internal predecessors, (1828522), 0 states have call successors, (0), 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 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:08:02,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:08:02,739 INFO L93 Difference]: Finished difference Result 213909 states and 1404973 transitions. [2022-03-01 17:08:02,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 17:08:02,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-03-01 17:08:02,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:08:06,327 INFO L225 Difference]: With dead ends: 213909 [2022-03-01 17:08:06,328 INFO L226 Difference]: Without dead ends: 213909 [2022-03-01 17:08:06,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:08:06,336 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 94 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:08:06,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 35 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:08:07,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213909 states. [2022-03-01 17:08:26,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213909 to 213909. [2022-03-01 17:08:27,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213909 states, 213908 states have (on average 6.568118069450418) internal successors, (1404973), 213908 states have internal predecessors, (1404973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:08:31,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213909 states to 213909 states and 1404973 transitions. [2022-03-01 17:08:31,427 INFO L78 Accepts]: Start accepts. Automaton has 213909 states and 1404973 transitions. Word has length 37 [2022-03-01 17:08:31,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:08:31,429 INFO L470 AbstractCegarLoop]: Abstraction has 213909 states and 1404973 transitions. [2022-03-01 17:08:31,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:08:31,430 INFO L276 IsEmpty]: Start isEmpty. Operand 213909 states and 1404973 transitions. [2022-03-01 17:08:33,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-01 17:08:33,784 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:08:33,785 INFO L514 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] [2022-03-01 17:08:33,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 17:08:33,786 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 6 more)] === [2022-03-01 17:08:33,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:08:33,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1904068604, now seen corresponding path program 1 times [2022-03-01 17:08:33,790 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:08:33,795 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354406846] [2022-03-01 17:08:33,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:08:33,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:08:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:08:33,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:33,905 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:08:33,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354406846] [2022-03-01 17:08:33,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354406846] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:08:33,905 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:08:33,906 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 17:08:33,906 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551389604] [2022-03-01 17:08:33,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:08:33,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 17:08:33,909 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:08:33,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 17:08:33,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:08:33,914 INFO L87 Difference]: Start difference. First operand 213909 states and 1404973 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:08:38,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:08:38,683 INFO L93 Difference]: Finished difference Result 192039 states and 1230742 transitions. [2022-03-01 17:08:38,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 17:08:38,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-03-01 17:08:38,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:08:42,712 INFO L225 Difference]: With dead ends: 192039 [2022-03-01 17:08:42,712 INFO L226 Difference]: Without dead ends: 192039 [2022-03-01 17:08:42,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:08:42,714 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 85 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:08:42,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 27 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:08:43,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192039 states. [2022-03-01 17:08:56,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192039 to 192039. [2022-03-01 17:08:57,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192039 states, 192038 states have (on average 6.4088461658630065) internal successors, (1230742), 192038 states have internal predecessors, (1230742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:09:01,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192039 states to 192039 states and 1230742 transitions. [2022-03-01 17:09:01,334 INFO L78 Accepts]: Start accepts. Automaton has 192039 states and 1230742 transitions. Word has length 37 [2022-03-01 17:09:01,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:09:01,335 INFO L470 AbstractCegarLoop]: Abstraction has 192039 states and 1230742 transitions. [2022-03-01 17:09:01,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:09:01,336 INFO L276 IsEmpty]: Start isEmpty. Operand 192039 states and 1230742 transitions. [2022-03-01 17:09:03,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-01 17:09:03,169 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:09:03,170 INFO L514 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] [2022-03-01 17:09:03,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-01 17:09:03,170 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 6 more)] === [2022-03-01 17:09:03,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:09:03,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1595584380, now seen corresponding path program 1 times [2022-03-01 17:09:03,171 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:09:03,176 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820635766] [2022-03-01 17:09:03,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:09:03,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:09:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:09:03,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:03,290 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:09:03,290 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820635766] [2022-03-01 17:09:03,290 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820635766] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:09:03,290 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:09:03,290 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 17:09:03,290 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942818047] [2022-03-01 17:09:03,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:09:03,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 17:09:03,291 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:09:03,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 17:09:03,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:09:03,292 INFO L87 Difference]: Start difference. First operand 192039 states and 1230742 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:09:06,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:09:06,860 INFO L93 Difference]: Finished difference Result 157047 states and 977779 transitions. [2022-03-01 17:09:06,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 17:09:06,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-03-01 17:09:06,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:09:09,859 INFO L225 Difference]: With dead ends: 157047 [2022-03-01 17:09:09,859 INFO L226 Difference]: Without dead ends: 157047 [2022-03-01 17:09:09,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:09:09,877 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 83 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:09:09,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 31 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:09:10,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157047 states.