/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/Problem17_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 05:32:06,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 05:32:06,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 05:32:06,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 05:32:06,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 05:32:06,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 05:32:06,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 05:32:06,738 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 05:32:06,751 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 05:32:06,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 05:32:06,751 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 05:32:06,751 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 05:32:06,752 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 05:32:06,752 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 05:32:06,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 05:32:06,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 05:32:06,753 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 05:32:06,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 05:32:06,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 05:32:06,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 05:32:06,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 05:32:06,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 05:32:06,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 05:32:06,754 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 05:32:06,754 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 05:32:06,754 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 05:32:06,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 05:32:06,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 05:32:06,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 05:32:06,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 05:32:06,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 05:32:06,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:32:06,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 05:32:06,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 05:32:06,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 05:32:06,759 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 05:32:06,759 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 05:32:06,759 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 05:32:06,760 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 05:32:06,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 05:32:06,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 05:32:06,760 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 05:32:06,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 05:32:06,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 05:32:06,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 05:32:06,996 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 05:32:06,998 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 05:32:06,999 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label09.c [2022-01-10 05:32:07,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2854bb54e/f6dce14c05ea4ee6b616b3f0211f4d5e/FLAG9d90ec025 [2022-01-10 05:32:07,493 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 05:32:07,493 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label09.c [2022-01-10 05:32:07,515 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2854bb54e/f6dce14c05ea4ee6b616b3f0211f4d5e/FLAG9d90ec025 [2022-01-10 05:32:07,787 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2854bb54e/f6dce14c05ea4ee6b616b3f0211f4d5e [2022-01-10 05:32:07,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 05:32:07,792 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 05:32:07,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 05:32:07,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 05:32:07,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 05:32:07,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:32:07" (1/1) ... [2022-01-10 05:32:07,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a10de0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:32:07, skipping insertion in model container [2022-01-10 05:32:07,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:32:07" (1/1) ... [2022-01-10 05:32:07,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 05:32:07,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 05:32:08,031 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/Problem17_label09.c[1938,1951] [2022-01-10 05:32:08,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:32:08,420 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 05:32:08,436 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/Problem17_label09.c[1938,1951] [2022-01-10 05:32:08,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:32:08,660 INFO L208 MainTranslator]: Completed translation [2022-01-10 05:32:08,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:32:08 WrapperNode [2022-01-10 05:32:08,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 05:32:08,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 05:32:08,661 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 05:32:08,661 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 05:32:08,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:32:08" (1/1) ... [2022-01-10 05:32:08,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:32:08" (1/1) ... [2022-01-10 05:32:08,784 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2608 [2022-01-10 05:32:08,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 05:32:08,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 05:32:08,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 05:32:08,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 05:32:08,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:32:08" (1/1) ... [2022-01-10 05:32:08,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:32:08" (1/1) ... [2022-01-10 05:32:08,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:32:08" (1/1) ... [2022-01-10 05:32:08,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:32:08" (1/1) ... [2022-01-10 05:32:08,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:32:08" (1/1) ... [2022-01-10 05:32:08,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:32:08" (1/1) ... [2022-01-10 05:32:08,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:32:08" (1/1) ... [2022-01-10 05:32:08,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 05:32:08,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 05:32:08,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 05:32:08,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 05:32:08,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:32:08" (1/1) ... [2022-01-10 05:32:08,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:32:08,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 05:32:08,998 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 05:32:09,005 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 05:32:09,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 05:32:09,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 05:32:09,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 05:32:09,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 05:32:09,077 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 05:32:09,079 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 05:32:37,591 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 05:32:37,605 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 05:32:37,605 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 05:32:37,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:32:37 BoogieIcfgContainer [2022-01-10 05:32:37,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 05:32:37,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 05:32:37,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 05:32:37,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 05:32:37,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:32:07" (1/3) ... [2022-01-10 05:32:37,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431d7a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:32:37, skipping insertion in model container [2022-01-10 05:32:37,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:32:08" (2/3) ... [2022-01-10 05:32:37,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431d7a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:32:37, skipping insertion in model container [2022-01-10 05:32:37,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:32:37" (3/3) ... [2022-01-10 05:32:37,615 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label09.c [2022-01-10 05:32:37,623 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 05:32:37,623 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 05:32:37,666 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 05:32:37,671 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 05:32:37,671 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 05:32:37,698 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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 05:32:37,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 05:32:37,706 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:32:37,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:32:37,707 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:32:37,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:32:37,711 INFO L85 PathProgramCache]: Analyzing trace with hash -569068670, now seen corresponding path program 1 times [2022-01-10 05:32:37,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:32:37,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461220187] [2022-01-10 05:32:37,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:32:37,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:32:37,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:32:37,728 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 05:32:37,767 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 05:32:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:32:37,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:32:37,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:32:37,926 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 05:32:37,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:32:37,927 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:32:37,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461220187] [2022-01-10 05:32:37,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461220187] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:32:37,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:32:37,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:32:37,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160670735] [2022-01-10 05:32:37,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:32:37,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:32:37,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:32:37,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:32:37,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:32:37,959 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 05:33:09,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:33:09,518 INFO L93 Difference]: Finished difference Result 1644 states and 3032 transitions. [2022-01-10 05:33:09,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:33:09,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2022-01-10 05:33:09,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:33:09,534 INFO L225 Difference]: With dead ends: 1644 [2022-01-10 05:33:09,535 INFO L226 Difference]: Without dead ends: 975 [2022-01-10 05:33:09,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 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 05:33:09,541 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 465 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 1583 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 1583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.4s IncrementalHoareTripleChecker+Time [2022-01-10 05:33:09,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 415 Invalid, 1813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 1583 Invalid, 0 Unknown, 0 Unchecked, 31.4s Time] [2022-01-10 05:33:09,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-01-10 05:33:09,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 960. [2022-01-10 05:33:09,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 959 states have (on average 1.616266944734098) internal successors, (1550), 959 states have internal predecessors, (1550), 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 05:33:09,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1550 transitions. [2022-01-10 05:33:09,599 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1550 transitions. Word has length 12 [2022-01-10 05:33:09,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:33:09,599 INFO L470 AbstractCegarLoop]: Abstraction has 960 states and 1550 transitions. [2022-01-10 05:33:09,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 05:33:09,600 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1550 transitions. [2022-01-10 05:33:09,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 05:33:09,601 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:33:09,601 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 05:33:09,613 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 05:33:09,807 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 05:33:09,808 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:33:09,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:33:09,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1540663647, now seen corresponding path program 1 times [2022-01-10 05:33:09,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:33:09,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058575983] [2022-01-10 05:33:09,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:33:09,810 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:33:09,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:33:09,811 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 05:33:09,814 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 05:33:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:33:09,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:33:09,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:33:10,074 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:33:10,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:33:10,074 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:33:10,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058575983] [2022-01-10 05:33:10,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058575983] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:33:10,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:33:10,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:33:10,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135253306] [2022-01-10 05:33:10,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:33:10,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:33:10,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:33:10,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:33:10,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:33:10,077 INFO L87 Difference]: Start difference. First operand 960 states and 1550 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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)