/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/Problem16_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 05:28:56,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 05:28:56,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 05:28:57,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 05:28:57,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 05:28:57,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 05:28:57,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 05:28:57,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 05:28:57,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 05:28:57,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 05:28:57,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 05:28:57,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 05:28:57,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 05:28:57,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 05:28:57,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 05:28:57,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 05:28:57,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 05:28:57,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 05:28:57,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 05:28:57,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 05:28:57,046 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 05:28:57,063 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 05:28:57,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 05:28:57,065 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 05:28:57,065 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 05:28:57,066 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 05:28:57,066 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 05:28:57,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 05:28:57,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 05:28:57,066 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 05:28:57,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 05:28:57,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 05:28:57,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 05:28:57,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 05:28:57,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 05:28:57,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 05:28:57,067 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 05:28:57,067 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 05:28:57,068 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 05:28:57,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 05:28:57,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 05:28:57,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 05:28:57,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 05:28:57,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 05:28:57,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:28:57,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 05:28:57,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 05:28:57,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 05:28:57,069 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 05:28:57,069 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 05:28:57,069 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 05:28:57,070 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 05:28:57,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 05:28:57,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 05:28:57,070 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 05:28:57,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 05:28:57,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 05:28:57,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 05:28:57,284 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 05:28:57,284 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 05:28:57,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label38.c [2022-01-10 05:28:57,341 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccc94e340/a9b138de8388492f9867c89de5225900/FLAGbad31523e [2022-01-10 05:28:57,840 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 05:28:57,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label38.c [2022-01-10 05:28:57,878 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccc94e340/a9b138de8388492f9867c89de5225900/FLAGbad31523e [2022-01-10 05:28:58,373 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccc94e340/a9b138de8388492f9867c89de5225900 [2022-01-10 05:28:58,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 05:28:58,377 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 05:28:58,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 05:28:58,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 05:28:58,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 05:28:58,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:28:58" (1/1) ... [2022-01-10 05:28:58,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d01bd45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:58, skipping insertion in model container [2022-01-10 05:28:58,389 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:28:58" (1/1) ... [2022-01-10 05:28:58,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 05:28:58,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 05:28:58,634 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/Problem16_label38.c[1461,1474] [2022-01-10 05:28:58,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:28:58,940 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 05:28:58,954 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/Problem16_label38.c[1461,1474] [2022-01-10 05:28:59,053 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:28:59,064 INFO L208 MainTranslator]: Completed translation [2022-01-10 05:28:59,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:59 WrapperNode [2022-01-10 05:28:59,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 05:28:59,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 05:28:59,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 05:28:59,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 05:28:59,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:59" (1/1) ... [2022-01-10 05:28:59,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:59" (1/1) ... [2022-01-10 05:28:59,180 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1765 [2022-01-10 05:28:59,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 05:28:59,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 05:28:59,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 05:28:59,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 05:28:59,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:59" (1/1) ... [2022-01-10 05:28:59,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:59" (1/1) ... [2022-01-10 05:28:59,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:59" (1/1) ... [2022-01-10 05:28:59,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:59" (1/1) ... [2022-01-10 05:28:59,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:59" (1/1) ... [2022-01-10 05:28:59,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:59" (1/1) ... [2022-01-10 05:28:59,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:59" (1/1) ... [2022-01-10 05:28:59,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 05:28:59,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 05:28:59,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 05:28:59,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 05:28:59,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:59" (1/1) ... [2022-01-10 05:28:59,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:28:59,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 05:28:59,365 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 05:28:59,422 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 05:28:59,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 05:28:59,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 05:28:59,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 05:28:59,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 05:28:59,499 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 05:28:59,501 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 05:29:06,078 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 05:29:06,089 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 05:29:06,089 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 05:29:06,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:29:06 BoogieIcfgContainer [2022-01-10 05:29:06,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 05:29:06,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 05:29:06,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 05:29:06,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 05:29:06,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:28:58" (1/3) ... [2022-01-10 05:29:06,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b96d463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:29:06, skipping insertion in model container [2022-01-10 05:29:06,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:59" (2/3) ... [2022-01-10 05:29:06,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b96d463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:29:06, skipping insertion in model container [2022-01-10 05:29:06,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:29:06" (3/3) ... [2022-01-10 05:29:06,115 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label38.c [2022-01-10 05:29:06,119 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 05:29:06,119 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 05:29:06,164 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 05:29:06,171 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 05:29:06,171 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 05:29:06,193 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 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 05:29:06,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 05:29:06,197 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:29:06,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:29:06,198 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:29:06,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:29:06,202 INFO L85 PathProgramCache]: Analyzing trace with hash -988188511, now seen corresponding path program 1 times [2022-01-10 05:29:06,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:29:06,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291026682] [2022-01-10 05:29:06,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:29:06,212 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:29:06,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:29:06,214 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 05:29:06,266 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 05:29:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:29:06,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:29:06,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:29:06,394 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 05:29:06,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:29:06,395 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:29:06,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291026682] [2022-01-10 05:29:06,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [291026682] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:29:06,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:29:06,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:29:06,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230507495] [2022-01-10 05:29:06,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:29:06,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:29:06,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:29:06,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:29:06,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:29:06,460 INFO L87 Difference]: Start difference. First operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 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 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 05:29:15,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:29:15,009 INFO L93 Difference]: Finished difference Result 1122 states and 2103 transitions. [2022-01-10 05:29:15,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:29:15,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2022-01-10 05:29:15,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:29:15,039 INFO L225 Difference]: With dead ends: 1122 [2022-01-10 05:29:15,040 INFO L226 Difference]: Without dead ends: 662 [2022-01-10 05:29:15,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 05:29:15,049 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 334 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-01-10 05:29:15,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 290 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-01-10 05:29:15,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-01-10 05:29:15,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2022-01-10 05:29:15,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.4826021180030258) internal successors, (980), 661 states have internal predecessors, (980), 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 05:29:15,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 980 transitions. [2022-01-10 05:29:15,183 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 980 transitions. Word has length 11 [2022-01-10 05:29:15,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:29:15,184 INFO L470 AbstractCegarLoop]: Abstraction has 662 states and 980 transitions. [2022-01-10 05:29:15,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 05:29:15,184 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 980 transitions. [2022-01-10 05:29:15,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 05:29:15,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:29:15,186 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 05:29:15,195 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 05:29:15,395 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 05:29:15,395 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:29:15,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:29:15,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1713745712, now seen corresponding path program 1 times [2022-01-10 05:29:15,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:29:15,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63858292] [2022-01-10 05:29:15,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:29:15,399 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:29:15,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:29:15,403 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 05:29:15,404 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 05:29:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:29:15,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:29:15,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:29:15,721 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:29:15,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:29:15,721 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:29:15,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63858292] [2022-01-10 05:29:15,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63858292] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:29:15,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:29:15,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:29:15,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122572505] [2022-01-10 05:29:15,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:29:15,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:29:15,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:29:15,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:29:15,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:29:15,724 INFO L87 Difference]: Start difference. First operand 662 states and 980 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 05:29:21,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:29:21,667 INFO L93 Difference]: Finished difference Result 1651 states and 2341 transitions. [2022-01-10 05:29:21,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:29:21,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 83 [2022-01-10 05:29:21,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:29:21,671 INFO L225 Difference]: With dead ends: 1651 [2022-01-10 05:29:21,671 INFO L226 Difference]: Without dead ends: 991 [2022-01-10 05:29:21,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 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 05:29:21,674 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 260 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-01-10 05:29:21,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 249 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-01-10 05:29:21,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-01-10 05:29:21,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2022-01-10 05:29:21,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 990 states have (on average 1.3525252525252525) internal successors, (1339), 990 states have internal predecessors, (1339), 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 05:29:21,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1339 transitions. [2022-01-10 05:29:21,705 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1339 transitions. Word has length 83 [2022-01-10 05:29:21,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:29:21,706 INFO L470 AbstractCegarLoop]: Abstraction has 991 states and 1339 transitions. [2022-01-10 05:29:21,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 05:29:21,708 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1339 transitions. [2022-01-10 05:29:21,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 05:29:21,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:29:21,715 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 05:29:21,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 05:29:21,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:29:21,923 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:29:21,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:29:21,924 INFO L85 PathProgramCache]: Analyzing trace with hash -910165357, now seen corresponding path program 1 times [2022-01-10 05:29:21,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:29:21,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229633142] [2022-01-10 05:29:21,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:29:21,925 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:29:21,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:29:21,926 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:29:21,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 05:29:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:29:21,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:29:21,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:29:22,152 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:29:22,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:29:22,153 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:29:22,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229633142] [2022-01-10 05:29:22,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229633142] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:29:22,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:29:22,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 05:29:22,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024249466] [2022-01-10 05:29:22,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:29:22,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:29:22,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:29:22,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:29:22,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:29:22,154 INFO L87 Difference]: Start difference. First operand 991 states and 1339 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 05:29:29,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:29:29,989 INFO L93 Difference]: Finished difference Result 1980 states and 2911 transitions. [2022-01-10 05:29:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:29:29,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 98 [2022-01-10 05:29:29,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:29:29,994 INFO L225 Difference]: With dead ends: 1980 [2022-01-10 05:29:29,994 INFO L226 Difference]: Without dead ends: 1320 [2022-01-10 05:29:29,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 96 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 05:29:29,998 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 373 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-01-10 05:29:29,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 539 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-01-10 05:29:30,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2022-01-10 05:29:30,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1320. [2022-01-10 05:29:30,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1319 states have (on average 1.3146322971948445) internal successors, (1734), 1319 states have internal predecessors, (1734), 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 05:29:30,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1734 transitions. [2022-01-10 05:29:30,019 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1734 transitions. Word has length 98 [2022-01-10 05:29:30,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:29:30,019 INFO L470 AbstractCegarLoop]: Abstraction has 1320 states and 1734 transitions. [2022-01-10 05:29:30,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 05:29:30,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1734 transitions. [2022-01-10 05:29:30,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 05:29:30,025 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:29:30,025 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 05:29:30,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-01-10 05:29:30,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:29:30,245 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:29:30,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:29:30,246 INFO L85 PathProgramCache]: Analyzing trace with hash -516618222, now seen corresponding path program 1 times [2022-01-10 05:29:30,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:29:30,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764897342] [2022-01-10 05:29:30,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:29:30,247 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:29:30,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:29:30,249 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:29:30,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 05:29:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:29:30,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:29:30,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:29:30,634 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:29:30,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:29:30,634 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:29:30,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764897342] [2022-01-10 05:29:30,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764897342] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:29:30,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:29:30,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:29:30,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604951624] [2022-01-10 05:29:30,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:29:30,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:29:30,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:29:30,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:29:30,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:29:30,636 INFO L87 Difference]: Start difference. First operand 1320 states and 1734 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 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 05:29:38,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:29:38,811 INFO L93 Difference]: Finished difference Result 3625 states and 4838 transitions. [2022-01-10 05:29:38,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:29:38,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 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 136 [2022-01-10 05:29:38,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:29:38,819 INFO L225 Difference]: With dead ends: 3625 [2022-01-10 05:29:38,819 INFO L226 Difference]: Without dead ends: 2636 [2022-01-10 05:29:38,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 134 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 05:29:38,822 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 225 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-01-10 05:29:38,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 241 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-01-10 05:29:38,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2022-01-10 05:29:38,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 2636. [2022-01-10 05:29:38,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 2635 states have (on average 1.2030360531309299) internal successors, (3170), 2635 states have internal predecessors, (3170), 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 05:29:38,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3170 transitions. [2022-01-10 05:29:38,854 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3170 transitions. Word has length 136 [2022-01-10 05:29:38,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:29:38,855 INFO L470 AbstractCegarLoop]: Abstraction has 2636 states and 3170 transitions. [2022-01-10 05:29:38,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 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 05:29:38,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3170 transitions. [2022-01-10 05:29:38,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-01-10 05:29:38,858 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:29:38,858 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:29:38,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-01-10 05:29:39,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:29:39,065 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:29:39,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:29:39,066 INFO L85 PathProgramCache]: Analyzing trace with hash -451963437, now seen corresponding path program 1 times [2022-01-10 05:29:39,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:29:39,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940486064] [2022-01-10 05:29:39,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:29:39,068 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:29:39,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:29:39,077 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:29:39,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 05:29:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:29:39,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 05:29:39,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:29:40,205 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 182 proven. 56 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-01-10 05:29:40,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:29:43,256 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 182 proven. 56 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-01-10 05:29:43,257 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:29:43,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940486064] [2022-01-10 05:29:43,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940486064] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 05:29:43,257 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 05:29:43,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-01-10 05:29:43,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128183033] [2022-01-10 05:29:43,257 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 05:29:43,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 05:29:43,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:29:43,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 05:29:43,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 05:29:43,259 INFO L87 Difference]: Start difference. First operand 2636 states and 3170 transitions. Second operand has 6 states, 6 states have (on average 64.5) internal successors, (387), 5 states have internal predecessors, (387), 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 05:29:53,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 05:29:56,692 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 05:29:58,574 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 05:30:02,875 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 05:30:14,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []