/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_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 05:00:56,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 05:00:56,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 05:00:56,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 05:00:56,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 05:00:56,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 05:00:56,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 05:00:56,554 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 05:00:56,573 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 05:00:56,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 05:00:56,573 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 05:00:56,573 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 05:00:56,574 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 05:00:56,574 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 05:00:56,574 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 05:00:56,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 05:00:56,574 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 05:00:56,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 05:00:56,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 05:00:56,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 05:00:56,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 05:00:56,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 05:00:56,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 05:00:56,575 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 05:00:56,575 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 05:00:56,575 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 05:00:56,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 05:00:56,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 05:00:56,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 05:00:56,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 05:00:56,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 05:00:56,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:00:56,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 05:00:56,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 05:00:56,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 05:00:56,576 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 05:00:56,576 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 05:00:56,576 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 05:00:56,576 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 05:00:56,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 05:00:56,576 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 05:00:56,576 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 05:00:56,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 05:00:56,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 05:00:56,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 05:00:56,785 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 05:00:56,785 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 05:00:56,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label33.c [2022-01-10 05:00:56,830 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a5e415f4/2c1e8a87946347e6934faddc9f79ae8b/FLAG0d10940e0 [2022-01-10 05:00:57,223 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 05:00:57,223 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label33.c [2022-01-10 05:00:57,247 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a5e415f4/2c1e8a87946347e6934faddc9f79ae8b/FLAG0d10940e0 [2022-01-10 05:00:57,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a5e415f4/2c1e8a87946347e6934faddc9f79ae8b [2022-01-10 05:00:57,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 05:00:57,565 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 05:00:57,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 05:00:57,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 05:00:57,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 05:00:57,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:00:57" (1/1) ... [2022-01-10 05:00:57,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c90708d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:57, skipping insertion in model container [2022-01-10 05:00:57,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:00:57" (1/1) ... [2022-01-10 05:00:57,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 05:00:57,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 05:00:57,863 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_label33.c[4121,4134] [2022-01-10 05:00:58,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:00:58,071 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 05:00:58,086 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_label33.c[4121,4134] [2022-01-10 05:00:58,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:00:58,220 INFO L208 MainTranslator]: Completed translation [2022-01-10 05:00:58,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:58 WrapperNode [2022-01-10 05:00:58,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 05:00:58,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 05:00:58,221 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 05:00:58,221 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 05:00:58,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:58" (1/1) ... [2022-01-10 05:00:58,249 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:58" (1/1) ... [2022-01-10 05:00:58,313 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 997 [2022-01-10 05:00:58,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 05:00:58,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 05:00:58,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 05:00:58,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 05:00:58,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:58" (1/1) ... [2022-01-10 05:00:58,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:58" (1/1) ... [2022-01-10 05:00:58,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:58" (1/1) ... [2022-01-10 05:00:58,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:58" (1/1) ... [2022-01-10 05:00:58,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:58" (1/1) ... [2022-01-10 05:00:58,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:58" (1/1) ... [2022-01-10 05:00:58,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:58" (1/1) ... [2022-01-10 05:00:58,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 05:00:58,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 05:00:58,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 05:00:58,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 05:00:58,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:58" (1/1) ... [2022-01-10 05:00:58,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:00:58,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 05:00:58,427 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 05:00:58,435 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 05:00:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 05:00:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 05:00:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 05:00:58,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 05:00:58,516 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 05:00:58,517 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 05:01:05,425 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 05:01:05,439 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 05:01:05,440 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 05:01:05,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:01:05 BoogieIcfgContainer [2022-01-10 05:01:05,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 05:01:05,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 05:01:05,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 05:01:05,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 05:01:05,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:00:57" (1/3) ... [2022-01-10 05:01:05,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cc8331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:01:05, skipping insertion in model container [2022-01-10 05:01:05,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:58" (2/3) ... [2022-01-10 05:01:05,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cc8331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:01:05, skipping insertion in model container [2022-01-10 05:01:05,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:01:05" (3/3) ... [2022-01-10 05:01:05,452 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label33.c [2022-01-10 05:01:05,457 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 05:01:05,457 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 05:01:05,507 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 05:01:05,518 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 05:01:05,519 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 05:01:05,541 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 05:01:05,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 05:01:05,546 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:01:05,546 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] [2022-01-10 05:01:05,547 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:01:05,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:01:05,550 INFO L85 PathProgramCache]: Analyzing trace with hash -716875070, now seen corresponding path program 1 times [2022-01-10 05:01:05,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:01:05,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [479987628] [2022-01-10 05:01:05,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:01:05,562 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:01:05,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:01:05,564 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 05:01:05,591 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 05:01:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:01:05,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:01:05,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:01:05,826 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 05:01:05,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:01:05,827 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:01:05,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [479987628] [2022-01-10 05:01:05,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [479987628] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:01:05,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:01:05,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:01:05,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267241518] [2022-01-10 05:01:05,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:01:05,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:01:05,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:01:05,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:01:05,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:01:05,869 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 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 05:01:13,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:01:13,736 INFO L93 Difference]: Finished difference Result 764 states and 1354 transitions. [2022-01-10 05:01:13,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:01:13,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2022-01-10 05:01:13,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:01:13,752 INFO L225 Difference]: With dead ends: 764 [2022-01-10 05:01:13,752 INFO L226 Difference]: Without dead ends: 417 [2022-01-10 05:01:13,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 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 05:01:13,757 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 189 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 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, 7.8s IncrementalHoareTripleChecker+Time [2022-01-10 05:01:13,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 193 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-01-10 05:01:13,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-01-10 05:01:13,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 408. [2022-01-10 05:01:13,805 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 05:01:13,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 604 transitions. [2022-01-10 05:01:13,807 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 604 transitions. Word has length 28 [2022-01-10 05:01:13,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:01:13,807 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 604 transitions. [2022-01-10 05:01:13,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 05:01:13,807 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 604 transitions. [2022-01-10 05:01:13,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 05:01:13,809 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:01:13,809 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 05:01:13,820 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 05:01:14,019 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 05:01:14,020 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:01:14,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:01:14,021 INFO L85 PathProgramCache]: Analyzing trace with hash 2075674399, now seen corresponding path program 1 times [2022-01-10 05:01:14,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:01:14,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217363498] [2022-01-10 05:01:14,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:01:14,022 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:01:14,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:01:14,023 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 05:01:14,024 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 05:01:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:01:14,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 05:01:14,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:01:14,717 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:01:14,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:01:14,718 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:01:14,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217363498] [2022-01-10 05:01:14,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217363498] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:01:14,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:01:14,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:01:14,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880326246] [2022-01-10 05:01:14,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:01:14,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:01:14,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:01:14,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:01:14,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:01:14,721 INFO L87 Difference]: Start difference. First operand 408 states and 604 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 05:01:21,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:01:21,160 INFO L93 Difference]: Finished difference Result 1001 states and 1456 transitions. [2022-01-10 05:01:21,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:01:21,167 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 05:01:21,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:01:21,171 INFO L225 Difference]: With dead ends: 1001 [2022-01-10 05:01:21,172 INFO L226 Difference]: Without dead ends: 595 [2022-01-10 05:01:21,173 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 05:01:21,174 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 123 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s 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, 6.4s IncrementalHoareTripleChecker+Time [2022-01-10 05:01:21,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 175 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-01-10 05:01:21,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-01-10 05:01:21,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 592. [2022-01-10 05:01:21,195 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 05:01:21,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 806 transitions. [2022-01-10 05:01:21,196 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 806 transitions. Word has length 94 [2022-01-10 05:01:21,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:01:21,197 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 806 transitions. [2022-01-10 05:01:21,197 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 05:01:21,197 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 806 transitions. [2022-01-10 05:01:21,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 05:01:21,199 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:01:21,199 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1] [2022-01-10 05:01:21,209 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 05:01:21,403 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 05:01:21,403 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:01:21,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:01:21,404 INFO L85 PathProgramCache]: Analyzing trace with hash 790149943, now seen corresponding path program 1 times [2022-01-10 05:01:21,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:01:21,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344201987] [2022-01-10 05:01:21,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:01:21,405 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:01:21,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:01:21,406 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 05:01:21,408 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 05:01:21,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:01:21,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:01:21,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:01:21,683 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:01:21,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:01:21,683 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:01:21,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344201987] [2022-01-10 05:01:21,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344201987] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:01:21,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:01:21,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:01:21,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450353644] [2022-01-10 05:01:21,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:01:21,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:01:21,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:01:21,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:01:21,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:01:21,685 INFO L87 Difference]: Start difference. First operand 592 states and 806 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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 05:01:28,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:01:28,902 INFO L93 Difference]: Finished difference Result 1556 states and 2168 transitions. [2022-01-10 05:01:28,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:01:28,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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 99 [2022-01-10 05:01:28,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:01:28,915 INFO L225 Difference]: With dead ends: 1556 [2022-01-10 05:01:28,915 INFO L226 Difference]: Without dead ends: 966 [2022-01-10 05:01:28,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 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 05:01:28,917 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 148 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s 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, 7.2s IncrementalHoareTripleChecker+Time [2022-01-10 05:01:28,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 154 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-01-10 05:01:28,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-01-10 05:01:28,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 966. [2022-01-10 05:01:28,938 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 05:01:28,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1242 transitions. [2022-01-10 05:01:28,941 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1242 transitions. Word has length 99 [2022-01-10 05:01:28,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:01:28,941 INFO L470 AbstractCegarLoop]: Abstraction has 966 states and 1242 transitions. [2022-01-10 05:01:28,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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 05:01:28,942 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1242 transitions. [2022-01-10 05:01:28,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-01-10 05:01:28,946 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:01:28,946 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:28,957 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 05:01:29,146 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 05:01:29,147 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:01:29,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:01:29,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1002850089, now seen corresponding path program 1 times [2022-01-10 05:01:29,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:01:29,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399514671] [2022-01-10 05:01:29,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:01:29,149 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:01:29,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:01:29,150 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 05:01:29,152 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 05:01:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:01:29,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:01:29,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:01:29,473 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:01:29,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:01:29,473 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:01:29,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399514671] [2022-01-10 05:01:29,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399514671] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:01:29,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:01:29,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 05:01:29,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192080888] [2022-01-10 05:01:29,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:01:29,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:01:29,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:01:29,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:01:29,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:01:29,475 INFO L87 Difference]: Start difference. First operand 966 states and 1242 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 05:01:36,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:01:36,355 INFO L93 Difference]: Finished difference Result 2130 states and 2853 transitions. [2022-01-10 05:01:36,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:01:36,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 155 [2022-01-10 05:01:36,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:01:36,365 INFO L225 Difference]: With dead ends: 2130 [2022-01-10 05:01:36,365 INFO L226 Difference]: Without dead ends: 1350 [2022-01-10 05:01:36,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 153 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 05:01:36,373 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 177 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-01-10 05:01:36,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 337 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-01-10 05:01:36,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2022-01-10 05:01:36,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1342. [2022-01-10 05:01:36,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1341 states have (on average 1.2647278150633856) internal successors, (1696), 1341 states have internal predecessors, (1696), 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 05:01:36,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1696 transitions. [2022-01-10 05:01:36,394 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1696 transitions. Word has length 155 [2022-01-10 05:01:36,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:01:36,395 INFO L470 AbstractCegarLoop]: Abstraction has 1342 states and 1696 transitions. [2022-01-10 05:01:36,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 05:01:36,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1696 transitions. [2022-01-10 05:01:36,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-01-10 05:01:36,402 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:01:36,403 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:36,410 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 05:01:36,610 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 05:01:36,610 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:01:36,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:01:36,611 INFO L85 PathProgramCache]: Analyzing trace with hash 798376576, now seen corresponding path program 1 times [2022-01-10 05:01:36,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:01:36,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714615198] [2022-01-10 05:01:36,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:01:36,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:01:36,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:01:36,613 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 05:01:36,614 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 05:01:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:01:36,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 05:01:36,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:01:37,902 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 51 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:01:37,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:01:40,201 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:01:40,202 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:01:40,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714615198] [2022-01-10 05:01:40,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714615198] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 05:01:40,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 05:01:40,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-10 05:01:40,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517521723] [2022-01-10 05:01:40,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:01:40,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:01:40,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:01:40,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:01:40,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 05:01:40,203 INFO L87 Difference]: Start difference. First operand 1342 states and 1696 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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 05:02:04,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:02:04,055 INFO L93 Difference]: Finished difference Result 2309 states and 3082 transitions. [2022-01-10 05:02:04,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:02:04,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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 209 [2022-01-10 05:02:04,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:02:04,067 INFO L225 Difference]: With dead ends: 2309 [2022-01-10 05:02:04,067 INFO L226 Difference]: Without dead ends: 1711 [2022-01-10 05:02:04,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 413 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 05:02:04,068 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 152 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time [2022-01-10 05:02:04,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 38 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 23.8s Time] [2022-01-10 05:02:04,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2022-01-10 05:02:04,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1711. [2022-01-10 05:02:04,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1711 states, 1710 states have (on average 1.2923976608187135) internal successors, (2210), 1710 states have internal predecessors, (2210), 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 05:02:04,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2210 transitions. [2022-01-10 05:02:04,090 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2210 transitions. Word has length 209 [2022-01-10 05:02:04,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:02:04,090 INFO L470 AbstractCegarLoop]: Abstraction has 1711 states and 2210 transitions. [2022-01-10 05:02:04,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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 05:02:04,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2210 transitions. [2022-01-10 05:02:04,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-01-10 05:02:04,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:02:04,092 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:04,110 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 05:02:04,302 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 05:02:04,302 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:02:04,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:02:04,303 INFO L85 PathProgramCache]: Analyzing trace with hash 987402520, now seen corresponding path program 1 times [2022-01-10 05:02:04,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:02:04,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325808881] [2022-01-10 05:02:04,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:02:04,304 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:02:04,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:02:04,305 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 05:02:04,306 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 05:02:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:02:04,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 05:02:04,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:02:06,016 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:02:06,016 INFO L328 TraceCheckSpWp]: Computing backward predicates...