/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/array-multidimensional/max-3-n-u.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 09:46:37,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 09:46:37,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 09:46:38,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 09:46:38,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 09:46:38,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 09:46:38,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 09:46:38,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 09:46:38,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 09:46:38,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 09:46:38,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 09:46:38,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 09:46:38,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 09:46:38,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 09:46:38,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 09:46:38,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 09:46:38,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 09:46:38,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 09:46:38,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 09:46:38,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 09:46:38,088 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 09:46:38,108 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 09:46:38,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 09:46:38,108 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 09:46:38,108 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 09:46:38,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 09:46:38,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 09:46:38,109 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 09:46:38,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 09:46:38,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 09:46:38,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 09:46:38,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 09:46:38,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 09:46:38,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 09:46:38,110 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 09:46:38,111 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 09:46:38,111 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 09:46:38,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 09:46:38,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 09:46:38,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 09:46:38,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 09:46:38,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 09:46:38,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:46:38,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 09:46:38,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 09:46:38,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 09:46:38,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 09:46:38,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 09:46:38,113 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 09:46:38,113 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 09:46:38,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 09:46:38,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 09:46:38,113 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 09:46:38,114 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 09:46:38,114 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 09:46:38,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 09:46:38,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 09:46:38,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 09:46:38,332 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 09:46:38,334 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 09:46:38,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/max-3-n-u.c [2022-01-10 09:46:38,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4762d3fd8/c9228e28b3a94db7a2f67ad8cec5f602/FLAGea28e0fc1 [2022-01-10 09:46:38,781 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 09:46:38,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/max-3-n-u.c [2022-01-10 09:46:38,785 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4762d3fd8/c9228e28b3a94db7a2f67ad8cec5f602/FLAGea28e0fc1 [2022-01-10 09:46:38,797 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4762d3fd8/c9228e28b3a94db7a2f67ad8cec5f602 [2022-01-10 09:46:38,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 09:46:38,801 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 09:46:38,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 09:46:38,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 09:46:38,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 09:46:38,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:46:38" (1/1) ... [2022-01-10 09:46:38,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e01483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:46:38, skipping insertion in model container [2022-01-10 09:46:38,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:46:38" (1/1) ... [2022-01-10 09:46:38,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 09:46:38,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 09:46:38,917 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/max-3-n-u.c[321,334] [2022-01-10 09:46:38,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:46:38,951 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 09:46:38,961 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/max-3-n-u.c[321,334] [2022-01-10 09:46:38,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:46:38,978 INFO L208 MainTranslator]: Completed translation [2022-01-10 09:46:38,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:46:38 WrapperNode [2022-01-10 09:46:38,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 09:46:38,982 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 09:46:38,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 09:46:38,982 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 09:46:38,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:46:38" (1/1) ... [2022-01-10 09:46:38,993 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:46:38" (1/1) ... [2022-01-10 09:46:39,006 INFO L137 Inliner]: procedures = 16, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 108 [2022-01-10 09:46:39,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 09:46:39,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 09:46:39,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 09:46:39,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 09:46:39,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:46:38" (1/1) ... [2022-01-10 09:46:39,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:46:38" (1/1) ... [2022-01-10 09:46:39,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:46:38" (1/1) ... [2022-01-10 09:46:39,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:46:38" (1/1) ... [2022-01-10 09:46:39,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:46:38" (1/1) ... [2022-01-10 09:46:39,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:46:38" (1/1) ... [2022-01-10 09:46:39,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:46:38" (1/1) ... [2022-01-10 09:46:39,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 09:46:39,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 09:46:39,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 09:46:39,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 09:46:39,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:46:38" (1/1) ... [2022-01-10 09:46:39,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:46:39,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:46:39,097 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 09:46:39,139 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 09:46:39,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 09:46:39,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 09:46:39,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 09:46:39,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 09:46:39,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 09:46:39,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 09:46:39,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 09:46:39,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 09:46:39,219 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 09:46:39,221 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 09:46:40,401 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 09:46:40,405 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 09:46:40,405 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-01-10 09:46:40,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:46:40 BoogieIcfgContainer [2022-01-10 09:46:40,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 09:46:40,406 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 09:46:40,406 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 09:46:40,407 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 09:46:40,409 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:46:40" (1/1) ... [2022-01-10 09:46:40,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:46:40 BasicIcfg [2022-01-10 09:46:40,554 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 09:46:40,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 09:46:40,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 09:46:40,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 09:46:40,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:46:38" (1/4) ... [2022-01-10 09:46:40,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30535ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:46:40, skipping insertion in model container [2022-01-10 09:46:40,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:46:38" (2/4) ... [2022-01-10 09:46:40,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30535ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:46:40, skipping insertion in model container [2022-01-10 09:46:40,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:46:40" (3/4) ... [2022-01-10 09:46:40,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30535ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:46:40, skipping insertion in model container [2022-01-10 09:46:40,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:46:40" (4/4) ... [2022-01-10 09:46:40,559 INFO L111 eAbstractionObserver]: Analyzing ICFG max-3-n-u.cTransformedIcfg [2022-01-10 09:46:40,566 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 09:46:40,567 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 09:46:40,593 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 09:46:40,598 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 09:46:40,598 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 09:46:40,606 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 28 states have internal predecessors, (48), 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 09:46:40,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 09:46:40,609 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:46:40,609 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:46:40,610 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:46:40,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:46:40,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1131834211, now seen corresponding path program 1 times [2022-01-10 09:46:40,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:46:40,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134076901] [2022-01-10 09:46:40,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:46:40,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:46:40,686 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:46:40,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141486131] [2022-01-10 09:46:40,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:46:40,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:46:40,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:46:40,689 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:46:40,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 09:46:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:46:40,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 09:46:40,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:46:40,858 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 09:46:40,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:46:40,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:46:40,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134076901] [2022-01-10 09:46:40,860 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:46:40,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141486131] [2022-01-10 09:46:40,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141486131] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:46:40,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:46:40,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 09:46:40,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315255110] [2022-01-10 09:46:40,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:46:40,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 09:46:40,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:46:40,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 09:46:40,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 09:46:40,890 INFO L87 Difference]: Start difference. First operand has 29 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 28 states have internal predecessors, (48), 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 2 states, 2 states have (on average 5.5) 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 09:46:40,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:46:40,907 INFO L93 Difference]: Finished difference Result 56 states and 94 transitions. [2022-01-10 09:46:40,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 09:46:40,909 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) 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 09:46:40,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:46:40,915 INFO L225 Difference]: With dead ends: 56 [2022-01-10 09:46:40,916 INFO L226 Difference]: Without dead ends: 25 [2022-01-10 09:46:40,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 09:46:40,921 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 09:46:40,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 09:46:40,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-10 09:46:40,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-01-10 09:46:40,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 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 09:46:40,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2022-01-10 09:46:40,951 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 11 [2022-01-10 09:46:40,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:46:40,952 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-01-10 09:46:40,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) 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 09:46:40,952 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2022-01-10 09:46:40,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 09:46:40,953 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:46:40,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:46:40,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 09:46:41,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-01-10 09:46:41,171 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:46:41,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:46:41,186 INFO L85 PathProgramCache]: Analyzing trace with hash 2019337892, now seen corresponding path program 1 times [2022-01-10 09:46:41,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:46:41,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869997675] [2022-01-10 09:46:41,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:46:41,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:46:41,211 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:46:41,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [29262010] [2022-01-10 09:46:41,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:46:41,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:46:41,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:46:41,212 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:46:41,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 09:46:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:46:41,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 09:46:41,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:46:41,480 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 09:46:41,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:46:41,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:46:41,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869997675] [2022-01-10 09:46:41,481 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:46:41,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29262010] [2022-01-10 09:46:41,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29262010] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:46:41,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:46:41,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 09:46:41,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130511206] [2022-01-10 09:46:41,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:46:41,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 09:46:41,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:46:41,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 09:46:41,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 09:46:41,483 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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 09:46:41,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:46:41,674 INFO L93 Difference]: Finished difference Result 67 states and 92 transitions. [2022-01-10 09:46:41,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 09:46:41,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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 09:46:41,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:46:41,676 INFO L225 Difference]: With dead ends: 67 [2022-01-10 09:46:41,676 INFO L226 Difference]: Without dead ends: 46 [2022-01-10 09:46:41,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 09:46:41,677 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 30 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 09:46:41,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 62 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 09:46:41,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-01-10 09:46:41,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 27. [2022-01-10 09:46:41,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 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 09:46:41,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2022-01-10 09:46:41,682 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 11 [2022-01-10 09:46:41,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:46:41,683 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2022-01-10 09:46:41,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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 09:46:41,683 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2022-01-10 09:46:41,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 09:46:41,684 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:46:41,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:46:41,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 09:46:41,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-01-10 09:46:41,896 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:46:41,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:46:41,897 INFO L85 PathProgramCache]: Analyzing trace with hash -192962176, now seen corresponding path program 1 times [2022-01-10 09:46:41,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:46:41,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103328138] [2022-01-10 09:46:41,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:46:41,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:46:41,918 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:46:41,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1575703975] [2022-01-10 09:46:41,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:46:41,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:46:41,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:46:41,929 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:46:41,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 09:46:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:46:42,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 09:46:42,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:46:42,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 09:46:42,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:46:42,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:46:42,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103328138] [2022-01-10 09:46:42,135 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:46:42,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575703975] [2022-01-10 09:46:42,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575703975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:46:42,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:46:42,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 09:46:42,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002415738] [2022-01-10 09:46:42,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:46:42,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 09:46:42,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:46:42,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 09:46:42,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 09:46:42,137 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 09:46:43,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:46:43,120 INFO L93 Difference]: Finished difference Result 79 states and 109 transitions. [2022-01-10 09:46:43,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 09:46:43,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2022-01-10 09:46:43,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:46:43,123 INFO L225 Difference]: With dead ends: 79 [2022-01-10 09:46:43,123 INFO L226 Difference]: Without dead ends: 43 [2022-01-10 09:46:43,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 09:46:43,124 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 24 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 09:46:43,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 72 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 09:46:43,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-10 09:46:43,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2022-01-10 09:46:43,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 29 states have internal predecessors, (39), 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 09:46:43,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2022-01-10 09:46:43,127 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 17 [2022-01-10 09:46:43,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:46:43,128 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2022-01-10 09:46:43,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 09:46:43,128 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2022-01-10 09:46:43,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 09:46:43,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:46:43,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:46:43,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-10 09:46:43,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:46:43,333 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:46:43,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:46:43,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1457410529, now seen corresponding path program 1 times [2022-01-10 09:46:43,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:46:43,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397011564] [2022-01-10 09:46:43,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:46:43,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:46:43,359 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:46:43,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939546796] [2022-01-10 09:46:43,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:46:43,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:46:43,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:46:43,375 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:46:43,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 09:46:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:46:43,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 09:46:43,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:46:43,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 09:46:43,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:46:43,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:46:43,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397011564] [2022-01-10 09:46:43,579 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:46:43,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939546796] [2022-01-10 09:46:43,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939546796] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:46:43,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:46:43,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 09:46:43,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298176296] [2022-01-10 09:46:43,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:46:43,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 09:46:43,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:46:43,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 09:46:43,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 09:46:43,581 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:46:44,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:46:44,058 INFO L93 Difference]: Finished difference Result 88 states and 118 transitions. [2022-01-10 09:46:44,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 09:46:44,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-10 09:46:44,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:46:44,059 INFO L225 Difference]: With dead ends: 88 [2022-01-10 09:46:44,059 INFO L226 Difference]: Without dead ends: 40 [2022-01-10 09:46:44,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 09:46:44,060 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 21 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 09:46:44,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 83 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 09:46:44,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-10 09:46:44,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2022-01-10 09:46:44,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 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 09:46:44,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2022-01-10 09:46:44,064 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 23 [2022-01-10 09:46:44,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:46:44,064 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2022-01-10 09:46:44,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:46:44,064 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2022-01-10 09:46:44,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 09:46:44,064 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:46:44,065 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] [2022-01-10 09:46:44,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 09:46:44,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:46:44,265 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:46:44,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:46:44,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2071237112, now seen corresponding path program 1 times [2022-01-10 09:46:44,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:46:44,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619808448] [2022-01-10 09:46:44,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:46:44,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:46:44,306 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:46:44,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [612754667] [2022-01-10 09:46:44,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:46:44,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:46:44,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:46:44,319 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:46:44,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 09:46:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:46:44,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 09:46:44,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:46:44,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 09:46:44,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:46:44,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 09:46:44,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:46:44,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619808448] [2022-01-10 09:46:44,724 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:46:44,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612754667] [2022-01-10 09:46:44,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612754667] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:46:44,724 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 09:46:44,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-01-10 09:46:44,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092056575] [2022-01-10 09:46:44,724 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 09:46:44,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 09:46:44,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:46:44,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 09:46:44,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-10 09:46:44,725 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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 09:46:46,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:46:46,765 INFO L93 Difference]: Finished difference Result 77 states and 101 transitions. [2022-01-10 09:46:46,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 09:46:46,766 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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 27 [2022-01-10 09:46:46,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:46:46,766 INFO L225 Difference]: With dead ends: 77 [2022-01-10 09:46:46,766 INFO L226 Difference]: Without dead ends: 54 [2022-01-10 09:46:46,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2022-01-10 09:46:46,767 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 59 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 09:46:46,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 60 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 09:46:46,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-01-10 09:46:46,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-01-10 09:46:46,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.3018867924528301) internal successors, (69), 53 states have internal predecessors, (69), 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 09:46:46,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2022-01-10 09:46:46,776 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 27 [2022-01-10 09:46:46,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:46:46,776 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2022-01-10 09:46:46,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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 09:46:46,776 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2022-01-10 09:46:46,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 09:46:46,777 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:46:46,777 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:46:46,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-10 09:46:46,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:46:46,982 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:46:46,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:46:46,982 INFO L85 PathProgramCache]: Analyzing trace with hash 433804185, now seen corresponding path program 2 times [2022-01-10 09:46:46,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:46:46,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164157012] [2022-01-10 09:46:46,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:46:46,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:46:47,023 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:46:47,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1274486727] [2022-01-10 09:46:47,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 09:46:47,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:46:47,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:46:47,026 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:46:47,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-10 09:46:47,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 09:46:47,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 09:46:47,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 09:46:47,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:46:47,488 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 09:46:47,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:46:47,725 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 09:46:47,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:46:47,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164157012] [2022-01-10 09:46:47,726 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:46:47,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274486727] [2022-01-10 09:46:47,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274486727] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:46:47,726 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 09:46:47,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-01-10 09:46:47,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817338265] [2022-01-10 09:46:47,726 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 09:46:47,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 09:46:47,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:46:47,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 09:46:47,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-01-10 09:46:47,727 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 09:46:50,288 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-10 09:46:51,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:46:51,055 INFO L93 Difference]: Finished difference Result 108 states and 137 transitions. [2022-01-10 09:46:51,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 09:46:51,056 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 48 [2022-01-10 09:46:51,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:46:51,056 INFO L225 Difference]: With dead ends: 108 [2022-01-10 09:46:51,056 INFO L226 Difference]: Without dead ends: 96 [2022-01-10 09:46:51,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-01-10 09:46:51,057 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 275 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-10 09:46:51,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 135 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-01-10 09:46:51,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-01-10 09:46:51,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 63. [2022-01-10 09:46:51,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3064516129032258) internal successors, (81), 62 states have internal predecessors, (81), 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 09:46:51,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 81 transitions. [2022-01-10 09:46:51,068 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 81 transitions. Word has length 48 [2022-01-10 09:46:51,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:46:51,070 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 81 transitions. [2022-01-10 09:46:51,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 09:46:51,070 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 81 transitions. [2022-01-10 09:46:51,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 09:46:51,071 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:46:51,071 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:46:51,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-10 09:46:51,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:46:51,280 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:46:51,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:46:51,281 INFO L85 PathProgramCache]: Analyzing trace with hash 3122180, now seen corresponding path program 3 times [2022-01-10 09:46:51,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:46:51,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112606899] [2022-01-10 09:46:51,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:46:51,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:46:51,310 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:46:51,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334852866] [2022-01-10 09:46:51,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 09:46:51,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:46:51,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:46:51,311 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:46:51,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-10 09:46:52,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-10 09:46:52,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 09:46:52,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-10 09:46:52,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:46:52,868 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-01-10 09:46:52,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:46:53,348 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-01-10 09:46:53,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:46:53,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112606899] [2022-01-10 09:46:53,349 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:46:53,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334852866] [2022-01-10 09:46:53,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334852866] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:46:53,349 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 09:46:53,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2022-01-10 09:46:53,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718603814] [2022-01-10 09:46:53,349 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 09:46:53,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 09:46:53,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:46:53,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 09:46:53,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-10 09:46:53,350 INFO L87 Difference]: Start difference. First operand 63 states and 81 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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 09:46:54,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:46:54,164 INFO L93 Difference]: Finished difference Result 168 states and 231 transitions. [2022-01-10 09:46:54,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 09:46:54,165 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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 57 [2022-01-10 09:46:54,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:46:54,166 INFO L225 Difference]: With dead ends: 168 [2022-01-10 09:46:54,166 INFO L226 Difference]: Without dead ends: 109 [2022-01-10 09:46:54,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-01-10 09:46:54,167 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 112 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 09:46:54,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 127 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 09:46:54,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-01-10 09:46:54,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 102. [2022-01-10 09:46:54,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.2772277227722773) internal successors, (129), 101 states have internal predecessors, (129), 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 09:46:54,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 129 transitions. [2022-01-10 09:46:54,189 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 129 transitions. Word has length 57 [2022-01-10 09:46:54,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:46:54,189 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 129 transitions. [2022-01-10 09:46:54,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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 09:46:54,189 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 129 transitions. [2022-01-10 09:46:54,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 09:46:54,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:46:54,191 INFO L514 BasicCegarLoop]: trace histogram [16, 8, 8, 8, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:46:54,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-10 09:46:54,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:46:54,399 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:46:54,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:46:54,399 INFO L85 PathProgramCache]: Analyzing trace with hash 224525120, now seen corresponding path program 4 times [2022-01-10 09:46:54,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:46:54,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054312020] [2022-01-10 09:46:54,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:46:54,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:46:54,468 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:46:54,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157660341] [2022-01-10 09:46:54,468 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-10 09:46:54,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:46:54,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:46:54,469 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:46:54,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-10 09:46:54,768 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-10 09:46:54,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 09:46:54,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-10 09:46:54,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:46:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 241 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-01-10 09:46:55,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:46:56,147 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 230 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-01-10 09:46:56,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:46:56,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054312020] [2022-01-10 09:46:56,148 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:46:56,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157660341] [2022-01-10 09:46:56,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157660341] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:46:56,148 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 09:46:56,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 18 [2022-01-10 09:46:56,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683919474] [2022-01-10 09:46:56,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 09:46:56,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 09:46:56,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:46:56,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 09:46:56,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-01-10 09:46:56,149 INFO L87 Difference]: Start difference. First operand 102 states and 129 transitions. Second operand has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 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 09:46:59,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-10 09:47:05,668 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-10 09:47:09,084 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-10 09:47:09,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:47:09,310 INFO L93 Difference]: Finished difference Result 277 states and 350 transitions. [2022-01-10 09:47:09,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 09:47:09,311 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 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 87 [2022-01-10 09:47:09,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:47:09,313 INFO L225 Difference]: With dead ends: 277 [2022-01-10 09:47:09,313 INFO L226 Difference]: Without dead ends: 256 [2022-01-10 09:47:09,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2022-01-10 09:47:09,314 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 456 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-01-10 09:47:09,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [456 Valid, 407 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2022-01-10 09:47:09,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-01-10 09:47:09,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 120. [2022-01-10 09:47:09,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.2857142857142858) internal successors, (153), 119 states have internal predecessors, (153), 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 09:47:09,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 153 transitions. [2022-01-10 09:47:09,348 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 153 transitions. Word has length 87 [2022-01-10 09:47:09,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:47:09,349 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 153 transitions. [2022-01-10 09:47:09,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 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 09:47:09,349 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 153 transitions. [2022-01-10 09:47:09,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 09:47:09,354 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:47:09,354 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:47:09,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-10 09:47:09,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-01-10 09:47:09,572 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:47:09,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:47:09,572 INFO L85 PathProgramCache]: Analyzing trace with hash 28594476, now seen corresponding path program 5 times [2022-01-10 09:47:09,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:47:09,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708411680] [2022-01-10 09:47:09,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:47:09,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:47:09,666 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:47:09,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [576651399] [2022-01-10 09:47:09,667 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-10 09:47:09,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:47:09,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:47:09,684 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:47:09,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process