/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_LAZY.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound50.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 14:45:56,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 14:45:56,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 14:45:56,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 14:45:56,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 14:45:56,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 14:45:56,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 14:45:56,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 14:45:56,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 14:45:56,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 14:45:56,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 14:45:56,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 14:45:56,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 14:45:56,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 14:45:56,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 14:45:56,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 14:45:56,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 14:45:56,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 14:45:56,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 14:45:56,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 14:45:56,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 14:45:56,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 14:45:56,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 14:45:56,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 14:45:56,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 14:45:56,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 14:45:56,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 14:45:56,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 14:45:56,724 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 14:45:56,741 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 14:45:56,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 14:45:56,742 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 14:45:56,742 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 14:45:56,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 14:45:56,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 14:45:56,743 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 14:45:56,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 14:45:56,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 14:45:56,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 14:45:56,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 14:45:56,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 14:45:56,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 14:45:56,744 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 14:45:56,744 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 14:45:56,744 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 14:45:56,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 14:45:56,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 14:45:56,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 14:45:56,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 14:45:56,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 14:45:56,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:45:56,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 14:45:56,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 14:45:56,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 14:45:56,746 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 14:45:56,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 14:45:56,746 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 14:45:56,746 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 14:45:56,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 14:45:56,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 14:45:56,747 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 14:45:56,748 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 14:45:56,749 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 14:45:56,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 14:45:56,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 14:45:56,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 14:45:56,946 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 14:45:56,951 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 14:45:56,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound50.i [2022-01-10 14:45:57,020 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ba4abd0d/a133240bbe5e4d82959da143fc934b61/FLAG6a14b69e8 [2022-01-10 14:45:57,345 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 14:45:57,346 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound50.i [2022-01-10 14:45:57,353 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ba4abd0d/a133240bbe5e4d82959da143fc934b61/FLAG6a14b69e8 [2022-01-10 14:45:57,747 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ba4abd0d/a133240bbe5e4d82959da143fc934b61 [2022-01-10 14:45:57,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 14:45:57,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 14:45:57,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 14:45:57,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 14:45:57,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 14:45:57,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:45:57" (1/1) ... [2022-01-10 14:45:57,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3974e44b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:45:57, skipping insertion in model container [2022-01-10 14:45:57,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:45:57" (1/1) ... [2022-01-10 14:45:57,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 14:45:57,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 14:45:57,901 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound50.i[950,963] [2022-01-10 14:45:57,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:45:57,971 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 14:45:58,001 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound50.i[950,963] [2022-01-10 14:45:58,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:45:58,025 INFO L208 MainTranslator]: Completed translation [2022-01-10 14:45:58,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:45:58 WrapperNode [2022-01-10 14:45:58,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 14:45:58,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 14:45:58,027 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 14:45:58,027 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 14:45:58,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:45:58" (1/1) ... [2022-01-10 14:45:58,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:45:58" (1/1) ... [2022-01-10 14:45:58,062 INFO L137 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 70 [2022-01-10 14:45:58,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 14:45:58,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 14:45:58,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 14:45:58,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 14:45:58,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:45:58" (1/1) ... [2022-01-10 14:45:58,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:45:58" (1/1) ... [2022-01-10 14:45:58,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:45:58" (1/1) ... [2022-01-10 14:45:58,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:45:58" (1/1) ... [2022-01-10 14:45:58,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:45:58" (1/1) ... [2022-01-10 14:45:58,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:45:58" (1/1) ... [2022-01-10 14:45:58,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:45:58" (1/1) ... [2022-01-10 14:45:58,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 14:45:58,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 14:45:58,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 14:45:58,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 14:45:58,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:45:58" (1/1) ... [2022-01-10 14:45:58,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:45:58,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:45:58,133 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 14:45:58,147 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 14:45:58,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 14:45:58,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 14:45:58,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 14:45:58,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 14:45:58,210 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 14:45:58,211 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 14:45:58,334 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 14:45:58,339 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 14:45:58,339 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 14:45:58,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:45:58 BoogieIcfgContainer [2022-01-10 14:45:58,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 14:45:58,342 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 14:45:58,342 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 14:45:58,343 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 14:45:58,345 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:45:58" (1/1) ... [2022-01-10 14:45:58,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:45:58 BasicIcfg [2022-01-10 14:45:58,440 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 14:45:58,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 14:45:58,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 14:45:58,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 14:45:58,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:45:57" (1/4) ... [2022-01-10 14:45:58,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0b6e70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:45:58, skipping insertion in model container [2022-01-10 14:45:58,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:45:58" (2/4) ... [2022-01-10 14:45:58,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0b6e70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:45:58, skipping insertion in model container [2022-01-10 14:45:58,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:45:58" (3/4) ... [2022-01-10 14:45:58,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0b6e70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:45:58, skipping insertion in model container [2022-01-10 14:45:58,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:45:58" (4/4) ... [2022-01-10 14:45:58,456 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_unwindbound50.iTransformedIcfg [2022-01-10 14:45:58,462 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 14:45:58,462 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 14:45:58,503 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 14:45:58,509 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 14:45:58,509 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 14:45:58,524 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 24 states have internal predecessors, (35), 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 14:45:58,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 14:45:58,529 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:45:58,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:45:58,529 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:45:58,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:45:58,533 INFO L85 PathProgramCache]: Analyzing trace with hash -2011965666, now seen corresponding path program 1 times [2022-01-10 14:45:58,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:45:58,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140863600] [2022-01-10 14:45:58,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:45:58,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:45:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:45:58,662 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 14:45:58,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:45:58,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140863600] [2022-01-10 14:45:58,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140863600] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:45:58,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:45:58,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:45:58,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640538230] [2022-01-10 14:45:58,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:45:58,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 14:45:58,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:45:58,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 14:45:58,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 14:45:58,692 INFO L87 Difference]: Start difference. First operand has 25 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 24 states have internal predecessors, (35), 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 14:45:58,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:45:58,704 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2022-01-10 14:45:58,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 14:45:58,706 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 14:45:58,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:45:58,713 INFO L225 Difference]: With dead ends: 47 [2022-01-10 14:45:58,713 INFO L226 Difference]: Without dead ends: 21 [2022-01-10 14:45:58,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 14:45:58,718 INFO L933 BasicCegarLoop]: 29 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, 29 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 14:45:58,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:45:58,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-01-10 14:45:58,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-01-10 14:45:58,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 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 14:45:58,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-01-10 14:45:58,746 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 11 [2022-01-10 14:45:58,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:45:58,747 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-01-10 14:45:58,747 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 14:45:58,747 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-01-10 14:45:58,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 14:45:58,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:45:58,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:45:58,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 14:45:58,748 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:45:58,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:45:58,749 INFO L85 PathProgramCache]: Analyzing trace with hash -664712687, now seen corresponding path program 1 times [2022-01-10 14:45:58,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:45:58,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529146184] [2022-01-10 14:45:58,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:45:58,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:45:58,789 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:45:58,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [324134654] [2022-01-10 14:45:58,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:45:58,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:45:58,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:45:58,796 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 14:45:58,803 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 14:45:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:45:58,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 14:45:58,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:45:58,991 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 14:45:58,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 14:45:58,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:45:58,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529146184] [2022-01-10 14:45:58,992 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:45:58,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324134654] [2022-01-10 14:45:58,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324134654] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:45:58,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:45:58,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:45:58,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024157128] [2022-01-10 14:45:58,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:45:58,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 14:45:58,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:45:58,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 14:45:58,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 14:45:58,996 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:45:59,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:45:59,013 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2022-01-10 14:45:59,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 14:45:59,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-01-10 14:45:59,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:45:59,014 INFO L225 Difference]: With dead ends: 35 [2022-01-10 14:45:59,014 INFO L226 Difference]: Without dead ends: 23 [2022-01-10 14:45:59,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 14:45:59,018 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:45:59,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:45:59,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-10 14:45:59,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-01-10 14:45:59,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 22 states have internal predecessors, (27), 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 14:45:59,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-01-10 14:45:59,029 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2022-01-10 14:45:59,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:45:59,029 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-01-10 14:45:59,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:45:59,029 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-01-10 14:45:59,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 14:45:59,030 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:45:59,030 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:45:59,057 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 14:45:59,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:45:59,251 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:45:59,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:45:59,251 INFO L85 PathProgramCache]: Analyzing trace with hash 902759655, now seen corresponding path program 1 times [2022-01-10 14:45:59,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:45:59,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509318849] [2022-01-10 14:45:59,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:45:59,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:45:59,275 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:45:59,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822008168] [2022-01-10 14:45:59,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:45:59,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:45:59,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:45:59,277 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 14:45:59,279 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 14:45:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:45:59,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 14:45:59,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:45:59,614 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 14:45:59,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 14:45:59,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:45:59,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509318849] [2022-01-10 14:45:59,616 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:45:59,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822008168] [2022-01-10 14:45:59,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822008168] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:45:59,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:45:59,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 14:45:59,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97529902] [2022-01-10 14:45:59,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:45:59,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 14:45:59,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:45:59,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 14:45:59,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 14:45:59,619 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 14:45:59,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:45:59,891 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2022-01-10 14:45:59,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 14:45:59,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 13 [2022-01-10 14:45:59,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:45:59,892 INFO L225 Difference]: With dead ends: 42 [2022-01-10 14:45:59,892 INFO L226 Difference]: Without dead ends: 35 [2022-01-10 14:45:59,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-01-10 14:45:59,894 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 83 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:45:59,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 56 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:45:59,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-10 14:45:59,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2022-01-10 14:45:59,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 29 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 14:45:59,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-01-10 14:45:59,900 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 13 [2022-01-10 14:45:59,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:45:59,900 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-01-10 14:45:59,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 14:45:59,900 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-01-10 14:45:59,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 14:45:59,901 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:45:59,901 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:45:59,922 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 14:46:00,110 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,SelfDestructingSolverStorable2 [2022-01-10 14:46:00,111 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:46:00,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:46:00,111 INFO L85 PathProgramCache]: Analyzing trace with hash 794881803, now seen corresponding path program 1 times [2022-01-10 14:46:00,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:46:00,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367237106] [2022-01-10 14:46:00,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:00,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:46:00,139 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:46:00,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [112965492] [2022-01-10 14:46:00,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:00,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:46:00,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:46:00,141 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 14:46:00,158 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 14:46:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:46:00,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 14:46:00,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:46:00,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:46:00,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:46:00,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:46:00,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:46:00,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367237106] [2022-01-10 14:46:00,613 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:46:00,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112965492] [2022-01-10 14:46:00,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112965492] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:46:00,614 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 14:46:00,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-01-10 14:46:00,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517340520] [2022-01-10 14:46:00,614 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 14:46:00,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 14:46:00,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:46:00,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 14:46:00,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 14:46:00,616 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 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 14:46:00,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:46:00,874 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2022-01-10 14:46:00,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 14:46:00,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 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 15 [2022-01-10 14:46:00,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:46:00,876 INFO L225 Difference]: With dead ends: 76 [2022-01-10 14:46:00,876 INFO L226 Difference]: Without dead ends: 64 [2022-01-10 14:46:00,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-01-10 14:46:00,885 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 36 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:46:00,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 111 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:46:00,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-01-10 14:46:00,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 38. [2022-01-10 14:46:00,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 37 states have internal predecessors, (46), 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 14:46:00,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2022-01-10 14:46:00,893 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 15 [2022-01-10 14:46:00,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:46:00,893 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2022-01-10 14:46:00,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 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 14:46:00,894 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2022-01-10 14:46:00,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 14:46:00,894 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:46:00,895 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:46:00,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 14:46:01,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:46:01,096 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:46:01,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:46:01,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1094451411, now seen corresponding path program 1 times [2022-01-10 14:46:01,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:46:01,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410265430] [2022-01-10 14:46:01,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:01,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:46:01,130 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:46:01,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721677741] [2022-01-10 14:46:01,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:01,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:46:01,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:46:01,134 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 14:46:01,136 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 14:46:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:46:01,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 14:46:01,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:46:01,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:46:01,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:46:02,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:46:02,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:46:02,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410265430] [2022-01-10 14:46:02,022 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:46:02,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721677741] [2022-01-10 14:46:02,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721677741] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 14:46:02,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 14:46:02,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2022-01-10 14:46:02,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299810769] [2022-01-10 14:46:02,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:46:02,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 14:46:02,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:46:02,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 14:46:02,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-10 14:46:02,025 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 14:46:02,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:46:02,059 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2022-01-10 14:46:02,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 14:46:02,060 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 16 [2022-01-10 14:46:02,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:46:02,061 INFO L225 Difference]: With dead ends: 46 [2022-01-10 14:46:02,061 INFO L226 Difference]: Without dead ends: 44 [2022-01-10 14:46:02,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-01-10 14:46:02,063 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 14 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:46:02,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 77 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 21 Unchecked, 0.0s Time] [2022-01-10 14:46:02,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-10 14:46:02,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2022-01-10 14:46:02,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 40 states have internal predecessors, (50), 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 14:46:02,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2022-01-10 14:46:02,084 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 16 [2022-01-10 14:46:02,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:46:02,084 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2022-01-10 14:46:02,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 14:46:02,085 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2022-01-10 14:46:02,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 14:46:02,086 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:46:02,086 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:46:02,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-10 14:46:02,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:46:02,291 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:46:02,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:46:02,291 INFO L85 PathProgramCache]: Analyzing trace with hash 431707999, now seen corresponding path program 1 times [2022-01-10 14:46:02,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:46:02,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508880587] [2022-01-10 14:46:02,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:02,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:46:02,308 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:46:02,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [266750531] [2022-01-10 14:46:02,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:02,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:46:02,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:46:02,311 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 14:46:02,312 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 14:46:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:46:02,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 14:46:02,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:46:02,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:46:02,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:46:02,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:46:02,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:46:02,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508880587] [2022-01-10 14:46:02,898 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:46:02,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266750531] [2022-01-10 14:46:02,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266750531] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:46:02,899 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 14:46:02,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-01-10 14:46:02,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912812868] [2022-01-10 14:46:02,899 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 14:46:02,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 14:46:02,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:46:02,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 14:46:02,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-10 14:46:02,900 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 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 14:46:05,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:46:05,032 INFO L93 Difference]: Finished difference Result 100 states and 120 transitions. [2022-01-10 14:46:05,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 14:46:05,033 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 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 14:46:05,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:46:05,034 INFO L225 Difference]: With dead ends: 100 [2022-01-10 14:46:05,034 INFO L226 Difference]: Without dead ends: 96 [2022-01-10 14:46:05,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-01-10 14:46:05,035 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 70 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 14:46:05,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 186 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 28 Invalid, 0 Unknown, 11 Unchecked, 0.2s Time] [2022-01-10 14:46:05,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-01-10 14:46:05,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 79. [2022-01-10 14:46:05,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 77 states have (on average 1.2727272727272727) internal successors, (98), 78 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:46:05,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 98 transitions. [2022-01-10 14:46:05,045 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 98 transitions. Word has length 17 [2022-01-10 14:46:05,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:46:05,045 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 98 transitions. [2022-01-10 14:46:05,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 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 14:46:05,046 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 98 transitions. [2022-01-10 14:46:05,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 14:46:05,046 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:46:05,047 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:46:05,060 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 14:46:05,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:46:05,252 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:46:05,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:46:05,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1338236980, now seen corresponding path program 1 times [2022-01-10 14:46:05,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:46:05,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144664665] [2022-01-10 14:46:05,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:05,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:46:05,266 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:46:05,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1546961196] [2022-01-10 14:46:05,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:05,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:46:05,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:46:05,280 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 14:46:05,284 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 14:46:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:46:05,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 14:46:05,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:46:05,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:46:05,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 14:46:05,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:46:05,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144664665] [2022-01-10 14:46:05,367 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:46:05,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546961196] [2022-01-10 14:46:05,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546961196] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:46:05,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:46:05,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:46:05,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937657744] [2022-01-10 14:46:05,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:46:05,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:46:05,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:46:05,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:46:05,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:46:05,369 INFO L87 Difference]: Start difference. First operand 79 states and 98 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 14:46:05,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:46:05,396 INFO L93 Difference]: Finished difference Result 100 states and 122 transitions. [2022-01-10 14:46:05,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:46:05,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 19 [2022-01-10 14:46:05,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:46:05,399 INFO L225 Difference]: With dead ends: 100 [2022-01-10 14:46:05,399 INFO L226 Difference]: Without dead ends: 50 [2022-01-10 14:46:05,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:46:05,400 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:46:05,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 35 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:46:05,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-10 14:46:05,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2022-01-10 14:46:05,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 45 states have internal predecessors, (56), 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 14:46:05,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2022-01-10 14:46:05,418 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 19 [2022-01-10 14:46:05,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:46:05,419 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2022-01-10 14:46:05,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 14:46:05,419 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2022-01-10 14:46:05,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 14:46:05,420 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:46:05,420 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:46:05,444 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 14:46:05,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:46:05,635 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:46:05,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:46:05,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1288898718, now seen corresponding path program 1 times [2022-01-10 14:46:05,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:46:05,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841855068] [2022-01-10 14:46:05,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:05,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:46:05,650 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:46:05,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1544757986] [2022-01-10 14:46:05,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:05,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:46:05,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:46:05,653 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 14:46:05,655 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 14:46:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:46:05,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 14:46:05,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:46:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:46:05,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:46:05,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:46:05,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:46:05,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841855068] [2022-01-10 14:46:05,804 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:46:05,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544757986] [2022-01-10 14:46:05,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544757986] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:46:05,804 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 14:46:05,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2022-01-10 14:46:05,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320394514] [2022-01-10 14:46:05,804 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 14:46:05,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:46:05,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:46:05,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:46:05,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:46:05,805 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 14:46:05,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:46:05,859 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2022-01-10 14:46:05,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:46:05,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 20 [2022-01-10 14:46:05,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:46:05,861 INFO L225 Difference]: With dead ends: 81 [2022-01-10 14:46:05,861 INFO L226 Difference]: Without dead ends: 77 [2022-01-10 14:46:05,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 14:46:05,862 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 43 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:46:05,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 67 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:46:05,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-01-10 14:46:05,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 59. [2022-01-10 14:46:05,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 57 states have (on average 1.280701754385965) internal successors, (73), 58 states have internal predecessors, (73), 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 14:46:05,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2022-01-10 14:46:05,872 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 20 [2022-01-10 14:46:05,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:46:05,873 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2022-01-10 14:46:05,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 14:46:05,873 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2022-01-10 14:46:05,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 14:46:05,876 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:46:05,877 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:46:05,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-10 14:46:06,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:46:06,100 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:46:06,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:46:06,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1635152390, now seen corresponding path program 1 times [2022-01-10 14:46:06,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:46:06,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552575098] [2022-01-10 14:46:06,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:06,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:46:06,122 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:46:06,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141310973] [2022-01-10 14:46:06,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:06,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:46:06,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:46:06,128 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 14:46:06,155 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 14:46:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:46:06,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-10 14:46:06,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:46:06,821 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:46:06,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:46:13,150 WARN L838 $PredicateComparison]: unable to prove that (forall ((|aux_div_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146| Int) (|ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int| Int) (|v_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int_11| Int) (|aux_div_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245| Int) (|aux_mod_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245| Int)) (let ((.cse1 (* |aux_div_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245| 4294967296)) (.cse2 (* |aux_div_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146| 4294967296))) (let ((.cse4 (+ |aux_mod_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245| .cse1 .cse2)) (.cse0 (mod (* 4294967295 |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|) 4294967296)) (.cse5 (+ |aux_mod_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245| .cse1)) (.cse3 (mod (* (mod (+ (mod (* 2 |v_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int_11|) 4294967296) 1) 4294967296) |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|) 4294967296))) (or (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int_11|)) (>= |aux_mod_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245| 4294967296) (= (+ .cse0 |aux_mod_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245|) (+ |aux_mod_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245| .cse1 .cse2 (* .cse3 (- 1)))) (< .cse4 (+ .cse3 |c_ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int| .cse0)) (not (< .cse4 (+ .cse3 .cse0 4294967296))) (<= (+ .cse3 4294967296) .cse5) (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int_11| 0)) (> 0 |aux_mod_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245|) (< .cse5 .cse3))))) is different from false [2022-01-10 14:46:16,606 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((|aux_div_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146| Int) (|ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int| Int) (|v_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int_11| Int) (|aux_div_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245| Int) (|aux_mod_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245| Int)) (let ((.cse1 (* |aux_div_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245| 4294967296)) (.cse2 (* |aux_div_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146| 4294967296))) (let ((.cse4 (+ |aux_mod_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245| .cse1 .cse2)) (.cse0 (mod (* 4294967295 |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|) 4294967296)) (.cse5 (+ |aux_mod_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245| .cse1)) (.cse3 (mod (* (mod (+ (mod (* 2 |v_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int_11|) 4294967296) 1) 4294967296) |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|) 4294967296))) (or (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int_11|)) (>= |aux_mod_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245| 4294967296) (= (+ .cse0 |aux_mod_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245|) (+ |aux_mod_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245| .cse1 .cse2 (* .cse3 (- 1)))) (< .cse4 (+ .cse3 |c_ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int| .cse0)) (not (< .cse4 (+ .cse3 .cse0 4294967296))) (<= (+ .cse3 4294967296) .cse5) (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int_11| 0)) (> 0 |aux_mod_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245|) (< .cse5 .cse3))))) (= |c_ULTIMATE.start_ULTIMATE.start_assume_abort_if_not_~cond#1Int| 0)) is different from false [2022-01-10 14:46:16,908 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:46:16,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:46:16,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552575098] [2022-01-10 14:46:16,908 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:46:16,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141310973] [2022-01-10 14:46:16,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141310973] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:46:16,909 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 14:46:16,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-01-10 14:46:16,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881903720] [2022-01-10 14:46:16,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 14:46:16,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 14:46:16,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:46:16,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 14:46:16,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=144, Unknown=3, NotChecked=50, Total=240 [2022-01-10 14:46:16,911 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 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 14:46:18,927 WARN L838 $PredicateComparison]: unable to prove that (and (or (<= |c_ULTIMATE.start_ULTIMATE.start_assume_abort_if_not_~cond#1Int| 0) (and (<= |c_ULTIMATE.start_ULTIMATE.start_assume_abort_if_not_~cond#1Int| 1) (<= 1 |c_ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int|))) (<= 0 |c_ULTIMATE.start_ULTIMATE.start_assume_abort_if_not_~cond#1Int|) (or (forall ((|aux_div_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146| Int) (|ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int| Int) (|v_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int_11| Int) (|aux_div_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245| Int) (|aux_mod_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245| Int)) (let ((.cse1 (* |aux_div_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245| 4294967296)) (.cse2 (* |aux_div_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146| 4294967296))) (let ((.cse4 (+ |aux_mod_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245| .cse1 .cse2)) (.cse0 (mod (* 4294967295 |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|) 4294967296)) (.cse5 (+ |aux_mod_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245| .cse1)) (.cse3 (mod (* (mod (+ (mod (* 2 |v_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int_11|) 4294967296) 1) 4294967296) |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|) 4294967296))) (or (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int_11|)) (>= |aux_mod_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245| 4294967296) (= (+ .cse0 |aux_mod_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245|) (+ |aux_mod_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245| .cse1 .cse2 (* .cse3 (- 1)))) (< .cse4 (+ .cse3 |c_ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int| .cse0)) (not (< .cse4 (+ .cse3 .cse0 4294967296))) (<= (+ .cse3 4294967296) .cse5) (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int_11| 0)) (> 0 |aux_mod_aux_mod_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int_146_245|) (< .cse5 .cse3))))) (= |c_ULTIMATE.start_ULTIMATE.start_assume_abort_if_not_~cond#1Int| 0)) (<= 0 c_~counter~0Int) (<= c_~counter~0Int 0)) is different from false [2022-01-10 14:46:21,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:46:21,428 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2022-01-10 14:46:21,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 14:46:21,429 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 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) Word has length 22 [2022-01-10 14:46:21,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:46:21,430 INFO L225 Difference]: With dead ends: 76 [2022-01-10 14:46:21,430 INFO L226 Difference]: Without dead ends: 64 [2022-01-10 14:46:21,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=84, Invalid=266, Unknown=4, NotChecked=108, Total=462 [2022-01-10 14:46:21,431 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 51 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 14:46:21,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 159 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 127 Invalid, 0 Unknown, 121 Unchecked, 0.2s Time] [2022-01-10 14:46:21,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-01-10 14:46:21,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 43. [2022-01-10 14:46:21,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 42 states have internal predecessors, (50), 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 14:46:21,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2022-01-10 14:46:21,436 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 22 [2022-01-10 14:46:21,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:46:21,437 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2022-01-10 14:46:21,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 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 14:46:21,437 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2022-01-10 14:46:21,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 14:46:21,437 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:46:21,437 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:46:21,445 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 14:46:21,638 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,SelfDestructingSolverStorable8 [2022-01-10 14:46:21,638 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:46:21,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:46:21,639 INFO L85 PathProgramCache]: Analyzing trace with hash -406188281, now seen corresponding path program 2 times [2022-01-10 14:46:21,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:46:21,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628255741] [2022-01-10 14:46:21,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:21,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:46:21,657 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:46:21,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [55641886] [2022-01-10 14:46:21,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 14:46:21,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:46:21,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:46:21,661 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 14:46:21,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-10 14:46:21,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 14:46:21,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 14:46:21,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 14:46:21,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:46:37,039 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:46:37,040 INFO L328 TraceCheckSpWp]: Computing backward predicates...