/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:58:38,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:58:38,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:58:38,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 04:58:38,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 04:58:38,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 04:58:38,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 04:58:38,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 04:58:38,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 04:58:38,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 04:58:38,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 04:58:38,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 04:58:38,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 04:58:38,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 04:58:38,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 04:58:38,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 04:58:38,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 04:58:38,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:58:38,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:58:38,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:58:38,461 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 04:58:38,479 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:58:38,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:58:38,480 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:58:38,480 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:58:38,480 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:58:38,481 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:58:38,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:58:38,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:58:38,481 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:58:38,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:58:38,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:58:38,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:58:38,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:58:38,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:58:38,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:58:38,483 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:58:38,483 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:58:38,483 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:58:38,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:58:38,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:58:38,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:58:38,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:58:38,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:58:38,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:58:38,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:58:38,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:58:38,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:58:38,485 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:58:38,485 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:58:38,485 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:58:38,485 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:58:38,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:58:38,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:58:38,486 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:58:38,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:58:38,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:58:38,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:58:38,673 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:58:38,675 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:58:38,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label07.c [2022-01-10 04:58:38,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3926ccd59/a0ba7fade9704b44a801f4a2d07dceeb/FLAGbbf550db0 [2022-01-10 04:58:39,239 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:58:39,240 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label07.c [2022-01-10 04:58:39,263 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3926ccd59/a0ba7fade9704b44a801f4a2d07dceeb/FLAGbbf550db0 [2022-01-10 04:58:39,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3926ccd59/a0ba7fade9704b44a801f4a2d07dceeb [2022-01-10 04:58:39,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:58:39,732 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:58:39,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:58:39,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:58:39,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:58:39,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:58:39" (1/1) ... [2022-01-10 04:58:39,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112c5a1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:39, skipping insertion in model container [2022-01-10 04:58:39,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:58:39" (1/1) ... [2022-01-10 04:58:39,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:58:39,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:58:40,025 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label07.c[3406,3419] [2022-01-10 04:58:40,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:58:40,291 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:58:40,320 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label07.c[3406,3419] [2022-01-10 04:58:40,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:58:40,441 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:58:40,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:40 WrapperNode [2022-01-10 04:58:40,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:58:40,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:58:40,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:58:40,442 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:58:40,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:40" (1/1) ... [2022-01-10 04:58:40,473 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:40" (1/1) ... [2022-01-10 04:58:40,525 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 997 [2022-01-10 04:58:40,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:58:40,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:58:40,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:58:40,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:58:40,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:40" (1/1) ... [2022-01-10 04:58:40,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:40" (1/1) ... [2022-01-10 04:58:40,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:40" (1/1) ... [2022-01-10 04:58:40,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:40" (1/1) ... [2022-01-10 04:58:40,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:40" (1/1) ... [2022-01-10 04:58:40,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:40" (1/1) ... [2022-01-10 04:58:40,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:40" (1/1) ... [2022-01-10 04:58:40,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:58:40,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:58:40,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:58:40,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:58:40,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:40" (1/1) ... [2022-01-10 04:58:40,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:58:40,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:58:40,637 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) [2022-01-10 04:58:40,641 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 [2022-01-10 04:58:40,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:58:40,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:58:40,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:58:40,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:58:40,720 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:58:40,722 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:58:46,727 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:58:46,736 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:58:46,736 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 04:58:46,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:58:46 BoogieIcfgContainer [2022-01-10 04:58:46,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:58:46,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:58:46,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:58:46,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:58:46,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:58:39" (1/3) ... [2022-01-10 04:58:46,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d27832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:58:46, skipping insertion in model container [2022-01-10 04:58:46,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:40" (2/3) ... [2022-01-10 04:58:46,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d27832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:58:46, skipping insertion in model container [2022-01-10 04:58:46,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:58:46" (3/3) ... [2022-01-10 04:58:46,748 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label07.c [2022-01-10 04:58:46,752 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:58:46,752 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:58:46,792 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:58:46,798 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=PETRI_NET, 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 [2022-01-10 04:58:46,798 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:58:46,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:58:46,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 04:58:46,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:58:46,823 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] [2022-01-10 04:58:46,824 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:58:46,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:58:46,829 INFO L85 PathProgramCache]: Analyzing trace with hash -573341295, now seen corresponding path program 1 times [2022-01-10 04:58:46,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:58:46,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324610850] [2022-01-10 04:58:46,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:58:46,840 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:58:46,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:58:46,843 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:58:46,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 04:58:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:58:46,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:58:46,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:58:47,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:58:47,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:58:47,062 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:58:47,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324610850] [2022-01-10 04:58:47,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324610850] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:58:47,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:58:47,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:58:47,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086317652] [2022-01-10 04:58:47,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:58:47,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:58:47,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:58:47,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:58:47,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:58:47,095 INFO L87 Difference]: Start difference. First operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:58:53,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:58:53,595 INFO L93 Difference]: Finished difference Result 764 states and 1354 transitions. [2022-01-10 04:58:53,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:58:53,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-10 04:58:53,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:58:53,614 INFO L225 Difference]: With dead ends: 764 [2022-01-10 04:58:53,614 INFO L226 Difference]: Without dead ends: 417 [2022-01-10 04:58:53,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:58:53,620 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 194 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-01-10 04:58:53,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 193 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-01-10 04:58:53,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-01-10 04:58:53,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 408. [2022-01-10 04:58:53,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 1.484029484029484) internal successors, (604), 407 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:58:53,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 604 transitions. [2022-01-10 04:58:53,668 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 604 transitions. Word has length 23 [2022-01-10 04:58:53,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:58:53,668 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 604 transitions. [2022-01-10 04:58:53,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:58:53,669 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 604 transitions. [2022-01-10 04:58:53,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 04:58:53,671 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:58:53,672 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:58:53,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 04:58:53,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:58:53,884 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:58:53,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:58:53,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1553265869, now seen corresponding path program 1 times [2022-01-10 04:58:53,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:58:53,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [945883625] [2022-01-10 04:58:53,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:58:53,887 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:58:53,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:58:53,888 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:58:53,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 04:58:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:58:53,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:58:53,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:58:54,505 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:58:54,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:58:54,505 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:58:54,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [945883625] [2022-01-10 04:58:54,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [945883625] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:58:54,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:58:54,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:58:54,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386652390] [2022-01-10 04:58:54,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:58:54,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:58:54,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:58:54,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:58:54,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:58:54,509 INFO L87 Difference]: Start difference. First operand 408 states and 604 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:59:00,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:59:00,222 INFO L93 Difference]: Finished difference Result 1001 states and 1456 transitions. [2022-01-10 04:59:00,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:59:00,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-01-10 04:59:00,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:59:00,231 INFO L225 Difference]: With dead ends: 1001 [2022-01-10 04:59:00,231 INFO L226 Difference]: Without dead ends: 595 [2022-01-10 04:59:00,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:59:00,233 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 123 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-01-10 04:59:00,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 175 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-01-10 04:59:00,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-01-10 04:59:00,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 592. [2022-01-10 04:59:00,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 591 states have (on average 1.3637901861252115) internal successors, (806), 591 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:59:00,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 806 transitions. [2022-01-10 04:59:00,265 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 806 transitions. Word has length 89 [2022-01-10 04:59:00,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:59:00,265 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 806 transitions. [2022-01-10 04:59:00,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:59:00,265 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 806 transitions. [2022-01-10 04:59:00,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 04:59:00,268 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:59:00,268 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:59:00,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 04:59:00,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:59:00,472 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:59:00,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:59:00,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1746742077, now seen corresponding path program 1 times [2022-01-10 04:59:00,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:59:00,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938207468] [2022-01-10 04:59:00,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:59:00,474 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:59:00,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:59:00,476 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:59:00,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 04:59:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:59:00,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:59:00,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:59:00,744 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:59:00,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:59:00,745 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:59:00,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938207468] [2022-01-10 04:59:00,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938207468] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:59:00,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:59:00,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:59:00,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882782080] [2022-01-10 04:59:00,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:59:00,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:59:00,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:59:00,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:59:00,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:59:00,747 INFO L87 Difference]: Start difference. First operand 592 states and 806 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:59:06,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:59:06,317 INFO L93 Difference]: Finished difference Result 1556 states and 2168 transitions. [2022-01-10 04:59:06,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:59:06,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-01-10 04:59:06,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:59:06,326 INFO L225 Difference]: With dead ends: 1556 [2022-01-10 04:59:06,326 INFO L226 Difference]: Without dead ends: 966 [2022-01-10 04:59:06,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:59:06,328 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 148 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-01-10 04:59:06,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 154 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-01-10 04:59:06,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-01-10 04:59:06,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 966. [2022-01-10 04:59:06,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 965 states have (on average 1.2870466321243523) internal successors, (1242), 965 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:59:06,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1242 transitions. [2022-01-10 04:59:06,351 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1242 transitions. Word has length 94 [2022-01-10 04:59:06,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:59:06,352 INFO L470 AbstractCegarLoop]: Abstraction has 966 states and 1242 transitions. [2022-01-10 04:59:06,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:59:06,352 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1242 transitions. [2022-01-10 04:59:06,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-01-10 04:59:06,359 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:59:06,360 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:59:06,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 04:59:06,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:59:06,572 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:59:06,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:59:06,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1119260003, now seen corresponding path program 1 times [2022-01-10 04:59:06,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:59:06,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12768988] [2022-01-10 04:59:06,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:59:06,574 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:59:06,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:59:06,576 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:59:06,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 04:59:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:59:06,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:59:06,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:59:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:59:07,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:59:07,673 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:59:07,674 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:59:07,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12768988] [2022-01-10 04:59:07,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12768988] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 04:59:07,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 04:59:07,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-10 04:59:07,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426945868] [2022-01-10 04:59:07,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:59:07,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:59:07,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:59:07,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:59:07,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:59:07,676 INFO L87 Difference]: Start difference. First operand 966 states and 1242 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:59:21,102 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 04:59:22,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:59:22,326 INFO L93 Difference]: Finished difference Result 2489 states and 3288 transitions. [2022-01-10 04:59:22,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:59:22,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2022-01-10 04:59:22,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:59:22,338 INFO L225 Difference]: With dead ends: 2489 [2022-01-10 04:59:22,338 INFO L226 Difference]: Without dead ends: 1709 [2022-01-10 04:59:22,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:59:22,340 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 183 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-01-10 04:59:22,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 348 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time] [2022-01-10 04:59:22,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2022-01-10 04:59:22,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1709. [2022-01-10 04:59:22,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1709 states, 1708 states have (on average 1.2283372365339578) internal successors, (2098), 1708 states have internal predecessors, (2098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:59:22,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2098 transitions. [2022-01-10 04:59:22,366 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2098 transitions. Word has length 150 [2022-01-10 04:59:22,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:59:22,366 INFO L470 AbstractCegarLoop]: Abstraction has 1709 states and 2098 transitions. [2022-01-10 04:59:22,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:59:22,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2098 transitions. [2022-01-10 04:59:22,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-01-10 04:59:22,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:59:22,369 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:59:22,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 04:59:22,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:59:22,578 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:59:22,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:59:22,579 INFO L85 PathProgramCache]: Analyzing trace with hash -2048490475, now seen corresponding path program 1 times [2022-01-10 04:59:22,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:59:22,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301198771] [2022-01-10 04:59:22,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:59:22,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:59:22,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:59:22,582 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:59:22,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 04:59:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:59:22,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 04:59:22,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:59:23,812 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 41 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:59:23,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:59:26,036 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:59:26,037 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:59:26,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1301198771] [2022-01-10 04:59:26,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1301198771] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 04:59:26,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 04:59:26,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-10 04:59:26,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614573811] [2022-01-10 04:59:26,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:59:26,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:59:26,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:59:26,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:59:26,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:59:26,039 INFO L87 Difference]: Start difference. First operand 1709 states and 2098 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:59:44,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:59:44,429 INFO L93 Difference]: Finished difference Result 3044 states and 3929 transitions. [2022-01-10 04:59:44,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:59:44,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 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 204 [2022-01-10 04:59:44,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:59:44,442 INFO L225 Difference]: With dead ends: 3044 [2022-01-10 04:59:44,442 INFO L226 Difference]: Without dead ends: 2263 [2022-01-10 04:59:44,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:59:44,445 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 152 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2022-01-10 04:59:44,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 38 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 18.3s Time] [2022-01-10 04:59:44,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2022-01-10 04:59:44,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 2263. [2022-01-10 04:59:44,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2262 states have (on average 1.2603890362511052) internal successors, (2851), 2262 states have internal predecessors, (2851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:59:44,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 2851 transitions. [2022-01-10 04:59:44,479 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 2851 transitions. Word has length 204 [2022-01-10 04:59:44,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:59:44,480 INFO L470 AbstractCegarLoop]: Abstraction has 2263 states and 2851 transitions. [2022-01-10 04:59:44,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:59:44,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 2851 transitions. [2022-01-10 04:59:44,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-01-10 04:59:44,482 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:59:44,483 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:59:44,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 04:59:44,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:59:44,695 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:59:44,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:59:44,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1687662639, now seen corresponding path program 1 times [2022-01-10 04:59:44,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:59:44,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873750963] [2022-01-10 04:59:44,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:59:44,697 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:59:44,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:59:44,698 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:59:44,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 04:59:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:59:44,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:59:44,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:59:45,129 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:59:45,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:59:45,129 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:59:45,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873750963] [2022-01-10 04:59:45,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873750963] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:59:45,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:59:45,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:59:45,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412264461] [2022-01-10 04:59:45,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:59:45,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:59:45,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:59:45,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:59:45,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:59:45,131 INFO L87 Difference]: Start difference. First operand 2263 states and 2851 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)