/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/Problem03_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:21:50,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:21:50,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:21:50,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 04:21:50,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 04:21:50,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 04:21:50,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 04:21:50,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 04:21:50,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 04:21:50,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 04:21:50,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 04:21:50,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 04:21:50,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 04:21:50,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 04:21:50,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 04:21:50,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 04:21:50,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 04:21:50,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 04:21:50,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 04:21:50,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 04:21:50,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 04:21:50,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 04:21:50,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 04:21:50,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 04:21:50,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 04:21:50,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:21:50,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:21:50,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:21:50,379 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 04:21:50,408 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:21:50,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:21:50,409 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:21:50,409 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:21:50,410 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:21:50,410 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:21:50,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:21:50,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:21:50,411 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:21:50,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:21:50,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:21:50,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:21:50,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:21:50,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:21:50,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:21:50,417 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:21:50,417 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:21:50,417 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:21:50,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:21:50,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:21:50,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:21:50,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:21:50,418 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:21:50,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:21:50,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:21:50,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:21:50,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:21:50,419 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:21:50,420 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:21:50,420 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:21:50,420 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:21:50,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:21:50,420 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:21:50,420 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:21:50,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:21:50,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:21:50,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:21:50,727 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:21:50,728 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:21:50,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label33.c [2022-01-10 04:21:50,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34fd276bd/8d83abb25fa24c79ada27c0265f7e043/FLAGd5d879529 [2022-01-10 04:21:51,324 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:21:51,325 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label33.c [2022-01-10 04:21:51,336 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34fd276bd/8d83abb25fa24c79ada27c0265f7e043/FLAGd5d879529 [2022-01-10 04:21:51,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34fd276bd/8d83abb25fa24c79ada27c0265f7e043 [2022-01-10 04:21:51,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:21:51,589 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:21:51,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:21:51,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:21:51,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:21:51,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:21:51" (1/1) ... [2022-01-10 04:21:51,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e80431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:51, skipping insertion in model container [2022-01-10 04:21:51,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:21:51" (1/1) ... [2022-01-10 04:21:51,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:21:51,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:21:52,164 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/Problem03_label33.c[55678,55691] [2022-01-10 04:21:52,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:21:52,216 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:21:52,481 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/Problem03_label33.c[55678,55691] [2022-01-10 04:21:52,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:21:52,514 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:21:52,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:52 WrapperNode [2022-01-10 04:21:52,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:21:52,516 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:21:52,516 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:21:52,516 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:21:52,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:52" (1/1) ... [2022-01-10 04:21:52,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:52" (1/1) ... [2022-01-10 04:21:52,647 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1769 [2022-01-10 04:21:52,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:21:52,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:21:52,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:21:52,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:21:52,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:52" (1/1) ... [2022-01-10 04:21:52,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:52" (1/1) ... [2022-01-10 04:21:52,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:52" (1/1) ... [2022-01-10 04:21:52,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:52" (1/1) ... [2022-01-10 04:21:52,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:52" (1/1) ... [2022-01-10 04:21:52,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:52" (1/1) ... [2022-01-10 04:21:52,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:52" (1/1) ... [2022-01-10 04:21:52,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:21:52,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:21:52,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:21:52,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:21:52,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:52" (1/1) ... [2022-01-10 04:21:52,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:21:52,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:21:52,832 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 04:21:52,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 04:21:52,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:21:52,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:21:52,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:21:52,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:21:52,975 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:21:52,976 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:21:54,851 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:21:54,865 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:21:54,866 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 04:21:54,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:21:54 BoogieIcfgContainer [2022-01-10 04:21:54,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:21:54,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:21:54,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:21:54,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:21:54,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:21:51" (1/3) ... [2022-01-10 04:21:54,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b1e650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:21:54, skipping insertion in model container [2022-01-10 04:21:54,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:52" (2/3) ... [2022-01-10 04:21:54,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b1e650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:21:54, skipping insertion in model container [2022-01-10 04:21:54,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:21:54" (3/3) ... [2022-01-10 04:21:54,878 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label33.c [2022-01-10 04:21:54,882 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:21:54,882 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:21:54,934 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:21:54,941 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 04:21:54,941 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:21:54,970 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:21:54,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 04:21:54,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:21:54,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:21:54,987 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:21:54,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:21:54,992 INFO L85 PathProgramCache]: Analyzing trace with hash 263676051, now seen corresponding path program 1 times [2022-01-10 04:21:55,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:21:55,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243312775] [2022-01-10 04:21:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:21:55,009 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:21:55,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:21:55,015 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:21:55,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 04:21:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:21:55,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-10 04:21:55,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:22:08,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:22:08,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:22:08,484 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:22:08,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243312775] [2022-01-10 04:22:08,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243312775] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:22:08,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:22:08,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 04:22:08,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526174597] [2022-01-10 04:22:08,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:22:08,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 04:22:08,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:22:08,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 04:22:08,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-10 04:22:08,515 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:12,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:22:12,053 INFO L93 Difference]: Finished difference Result 718 states and 1265 transitions. [2022-01-10 04:22:12,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 04:22:12,055 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 8 states have internal predecessors, (159), 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 159 [2022-01-10 04:22:12,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:22:12,066 INFO L225 Difference]: With dead ends: 718 [2022-01-10 04:22:12,066 INFO L226 Difference]: Without dead ends: 352 [2022-01-10 04:22:12,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-01-10 04:22:12,072 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 431 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 2445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-10 04:22:12,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 464 Invalid, 2445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-10 04:22:12,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-01-10 04:22:12,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2022-01-10 04:22:12,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 1.4586894586894588) internal successors, (512), 351 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:12,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 512 transitions. [2022-01-10 04:22:12,120 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 512 transitions. Word has length 159 [2022-01-10 04:22:12,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:22:12,121 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 512 transitions. [2022-01-10 04:22:12,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:12,121 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 512 transitions. [2022-01-10 04:22:12,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-10 04:22:12,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:22:12,124 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:22:12,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 04:22:12,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:22:12,334 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:22:12,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:22:12,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1939731592, now seen corresponding path program 1 times [2022-01-10 04:22:12,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:22:12,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449598062] [2022-01-10 04:22:12,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:22:12,338 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:22:12,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:22:12,339 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:22:12,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 04:22:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:22:12,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-10 04:22:12,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:22:25,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:22:25,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:22:25,877 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:22:25,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449598062] [2022-01-10 04:22:25,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449598062] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:22:25,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:22:25,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 04:22:25,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005001733] [2022-01-10 04:22:25,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:22:25,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 04:22:25,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:22:25,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 04:22:25,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-10 04:22:25,880 INFO L87 Difference]: Start difference. First operand 352 states and 512 transitions. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 9 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:28,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:22:28,721 INFO L93 Difference]: Finished difference Result 730 states and 1182 transitions. [2022-01-10 04:22:28,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 04:22:28,722 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 9 states have internal predecessors, (166), 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 166 [2022-01-10 04:22:28,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:22:28,725 INFO L225 Difference]: With dead ends: 730 [2022-01-10 04:22:28,726 INFO L226 Difference]: Without dead ends: 493 [2022-01-10 04:22:28,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-01-10 04:22:28,728 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 535 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 04:22:28,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [535 Valid, 335 Invalid, 2302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2169 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 04:22:28,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-01-10 04:22:28,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 493. [2022-01-10 04:22:28,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 492 states have (on average 1.339430894308943) internal successors, (659), 492 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:28,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 659 transitions. [2022-01-10 04:22:28,751 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 659 transitions. Word has length 166 [2022-01-10 04:22:28,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:22:28,752 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 659 transitions. [2022-01-10 04:22:28,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 9 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:28,752 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 659 transitions. [2022-01-10 04:22:28,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-01-10 04:22:28,755 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:22:28,755 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:22:28,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 04:22:28,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:22:28,964 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:22:28,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:22:28,965 INFO L85 PathProgramCache]: Analyzing trace with hash 946562569, now seen corresponding path program 1 times [2022-01-10 04:22:28,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:22:28,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75540809] [2022-01-10 04:22:28,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:22:28,967 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:22:28,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:22:28,968 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:22:28,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 04:22:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:22:29,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:22:29,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:22:29,371 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 04:22:29,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:22:29,371 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:22:29,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75540809] [2022-01-10 04:22:29,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75540809] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:22:29,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:22:29,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:22:29,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544418816] [2022-01-10 04:22:29,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:22:29,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:22:29,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:22:29,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:22:29,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:22:29,374 INFO L87 Difference]: Start difference. First operand 493 states and 659 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:30,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:22:30,286 INFO L93 Difference]: Finished difference Result 941 states and 1402 transitions. [2022-01-10 04:22:30,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:22:30,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 174 [2022-01-10 04:22:30,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:22:30,290 INFO L225 Difference]: With dead ends: 941 [2022-01-10 04:22:30,290 INFO L226 Difference]: Without dead ends: 704 [2022-01-10 04:22:30,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:22:30,292 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 82 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:22:30,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 328 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 04:22:30,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-01-10 04:22:30,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 702. [2022-01-10 04:22:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 1.2952924393723253) internal successors, (908), 701 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:30,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 908 transitions. [2022-01-10 04:22:30,316 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 908 transitions. Word has length 174 [2022-01-10 04:22:30,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:22:30,317 INFO L470 AbstractCegarLoop]: Abstraction has 702 states and 908 transitions. [2022-01-10 04:22:30,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:30,317 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 908 transitions. [2022-01-10 04:22:30,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-01-10 04:22:30,321 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:22:30,321 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:22:30,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 04:22:30,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:22:30,536 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:22:30,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:22:30,537 INFO L85 PathProgramCache]: Analyzing trace with hash -225756249, now seen corresponding path program 1 times [2022-01-10 04:22:30,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:22:30,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611245714] [2022-01-10 04:22:30,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:22:30,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:22:30,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:22:30,541 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:22:30,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 04:22:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:22:30,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:22:30,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:22:30,899 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-10 04:22:30,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:22:30,900 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:22:30,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611245714] [2022-01-10 04:22:30,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611245714] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:22:30,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:22:30,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:22:30,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294612131] [2022-01-10 04:22:30,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:22:30,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:22:30,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:22:30,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:22:30,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:22:30,902 INFO L87 Difference]: Start difference. First operand 702 states and 908 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:31,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:22:31,410 INFO L93 Difference]: Finished difference Result 1128 states and 1520 transitions. [2022-01-10 04:22:31,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:22:31,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 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 194 [2022-01-10 04:22:31,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:22:31,414 INFO L225 Difference]: With dead ends: 1128 [2022-01-10 04:22:31,414 INFO L226 Difference]: Without dead ends: 682 [2022-01-10 04:22:31,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:22:31,415 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 321 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 04:22:31,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 31 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 04:22:31,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-01-10 04:22:31,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2022-01-10 04:22:31,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 681 states have (on average 1.2481644640234948) internal successors, (850), 681 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:31,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 850 transitions. [2022-01-10 04:22:31,436 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 850 transitions. Word has length 194 [2022-01-10 04:22:31,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:22:31,437 INFO L470 AbstractCegarLoop]: Abstraction has 682 states and 850 transitions. [2022-01-10 04:22:31,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:31,437 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 850 transitions. [2022-01-10 04:22:31,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-01-10 04:22:31,441 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:22:31,441 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:22:31,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 04:22:31,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:22:31,651 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:22:31,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:22:31,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1688470894, now seen corresponding path program 1 times [2022-01-10 04:22:31,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:22:31,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [684849007] [2022-01-10 04:22:31,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:22:31,654 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:22:31,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:22:31,656 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:22:31,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 04:22:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:22:31,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:22:31,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:22:32,115 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 04:22:32,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:22:32,116 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:22:32,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [684849007] [2022-01-10 04:22:32,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [684849007] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:22:32,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:22:32,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:22:32,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906163084] [2022-01-10 04:22:32,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:22:32,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:22:32,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:22:32,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:22:32,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:22:32,118 INFO L87 Difference]: Start difference. First operand 682 states and 850 transitions. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:33,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:22:33,328 INFO L93 Difference]: Finished difference Result 1523 states and 2000 transitions. [2022-01-10 04:22:33,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:22:33,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 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 215 [2022-01-10 04:22:33,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:22:33,332 INFO L225 Difference]: With dead ends: 1523 [2022-01-10 04:22:33,332 INFO L226 Difference]: Without dead ends: 1097 [2022-01-10 04:22:33,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:22:33,334 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 421 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 04:22:33,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 55 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 04:22:33,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2022-01-10 04:22:33,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1093. [2022-01-10 04:22:33,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1092 states have (on average 1.2582417582417582) internal successors, (1374), 1092 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:33,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1374 transitions. [2022-01-10 04:22:33,353 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1374 transitions. Word has length 215 [2022-01-10 04:22:33,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:22:33,354 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 1374 transitions. [2022-01-10 04:22:33,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:33,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1374 transitions. [2022-01-10 04:22:33,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-01-10 04:22:33,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:22:33,358 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:22:33,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 04:22:33,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:22:33,567 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:22:33,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:22:33,568 INFO L85 PathProgramCache]: Analyzing trace with hash -535923035, now seen corresponding path program 1 times [2022-01-10 04:22:33,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:22:33,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331888929] [2022-01-10 04:22:33,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:22:33,569 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:22:33,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:22:33,571 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:22:33,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 04:22:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:22:33,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:22:33,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:22:33,981 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-01-10 04:22:33,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:22:33,981 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:22:33,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331888929] [2022-01-10 04:22:33,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331888929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:22:33,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:22:33,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:22:33,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934832035] [2022-01-10 04:22:33,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:22:33,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:22:33,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:22:33,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:22:33,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:22:33,983 INFO L87 Difference]: Start difference. First operand 1093 states and 1374 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:34,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:22:34,862 INFO L93 Difference]: Finished difference Result 2748 states and 3564 transitions. [2022-01-10 04:22:34,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:22:34,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2022-01-10 04:22:34,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:22:34,870 INFO L225 Difference]: With dead ends: 2748 [2022-01-10 04:22:34,870 INFO L226 Difference]: Without dead ends: 1911 [2022-01-10 04:22:34,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:22:34,875 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 218 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:22:34,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 244 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 04:22:34,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2022-01-10 04:22:34,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1908. [2022-01-10 04:22:34,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1907 states have (on average 1.2501310959622443) internal successors, (2384), 1907 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:34,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 2384 transitions. [2022-01-10 04:22:34,928 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 2384 transitions. Word has length 249 [2022-01-10 04:22:34,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:22:34,929 INFO L470 AbstractCegarLoop]: Abstraction has 1908 states and 2384 transitions. [2022-01-10 04:22:34,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:34,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 2384 transitions. [2022-01-10 04:22:34,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-01-10 04:22:34,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:22:34,934 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 04:22:34,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 04:22:35,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:22:35,144 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:22:35,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:22:35,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1998192162, now seen corresponding path program 1 times [2022-01-10 04:22:35,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:22:35,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861202759] [2022-01-10 04:22:35,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:22:35,148 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:22:35,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:22:35,149 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:22:35,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 04:22:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:22:35,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-10 04:22:35,282 INFO L286 TraceCheckSpWp]: Computing forward predicates...