/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/ldv-regression/test24-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 11:52:46,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 11:52:46,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 11:52:46,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 11:52:46,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 11:52:46,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 11:52:46,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 11:52:46,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 11:52:46,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 11:52:46,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 11:52:46,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 11:52:46,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 11:52:46,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 11:52:46,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 11:52:46,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 11:52:46,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 11:52:46,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 11:52:46,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 11:52:46,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 11:52:46,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 11:52:46,411 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 11:52:46,474 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 11:52:46,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 11:52:46,475 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 11:52:46,475 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 11:52:46,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 11:52:46,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 11:52:46,476 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 11:52:46,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 11:52:46,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 11:52:46,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 11:52:46,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 11:52:46,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 11:52:46,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 11:52:46,477 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 11:52:46,477 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 11:52:46,477 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 11:52:46,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 11:52:46,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 11:52:46,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 11:52:46,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 11:52:46,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 11:52:46,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 11:52:46,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 11:52:46,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 11:52:46,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 11:52:46,479 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 11:52:46,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 11:52:46,479 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 11:52:46,479 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 11:52:46,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 11:52:46,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 11:52:46,480 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 11:52:46,481 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 11:52:46,481 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 11:52:46,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 11:52:46,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 11:52:46,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 11:52:46,692 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 11:52:46,693 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 11:52:46,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-2.c [2022-01-10 11:52:46,749 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c6e37633/b5307477aa9b40248bf698f94c836811/FLAG7ec868120 [2022-01-10 11:52:47,097 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 11:52:47,098 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test24-2.c [2022-01-10 11:52:47,105 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c6e37633/b5307477aa9b40248bf698f94c836811/FLAG7ec868120 [2022-01-10 11:52:47,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c6e37633/b5307477aa9b40248bf698f94c836811 [2022-01-10 11:52:47,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 11:52:47,517 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 11:52:47,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 11:52:47,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 11:52:47,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 11:52:47,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:52:47" (1/1) ... [2022-01-10 11:52:47,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e9372dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:47, skipping insertion in model container [2022-01-10 11:52:47,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:52:47" (1/1) ... [2022-01-10 11:52:47,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 11:52:47,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 11:52:47,701 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test24-2.c[807,820] [2022-01-10 11:52:47,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 11:52:47,712 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 11:52:47,736 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test24-2.c[807,820] [2022-01-10 11:52:47,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 11:52:47,752 INFO L208 MainTranslator]: Completed translation [2022-01-10 11:52:47,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:47 WrapperNode [2022-01-10 11:52:47,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 11:52:47,753 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 11:52:47,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 11:52:47,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 11:52:47,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:47" (1/1) ... [2022-01-10 11:52:47,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:47" (1/1) ... [2022-01-10 11:52:47,787 INFO L137 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-01-10 11:52:47,788 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 11:52:47,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 11:52:47,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 11:52:47,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 11:52:47,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:47" (1/1) ... [2022-01-10 11:52:47,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:47" (1/1) ... [2022-01-10 11:52:47,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:47" (1/1) ... [2022-01-10 11:52:47,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:47" (1/1) ... [2022-01-10 11:52:47,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:47" (1/1) ... [2022-01-10 11:52:47,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:47" (1/1) ... [2022-01-10 11:52:47,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:47" (1/1) ... [2022-01-10 11:52:47,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 11:52:47,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 11:52:47,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 11:52:47,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 11:52:47,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:47" (1/1) ... [2022-01-10 11:52:47,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 11:52:47,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 11:52:47,850 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 11:52:47,857 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 11:52:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 11:52:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 11:52:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 11:52:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 11:52:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 11:52:47,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 11:52:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 11:52:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 11:52:47,967 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 11:52:47,968 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 11:52:48,120 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 11:52:48,124 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 11:52:48,125 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 11:52:48,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:52:48 BoogieIcfgContainer [2022-01-10 11:52:48,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 11:52:48,126 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 11:52:48,126 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 11:52:48,129 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 11:52:48,131 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:52:48" (1/1) ... [2022-01-10 11:52:48,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:52:48 BasicIcfg [2022-01-10 11:52:48,204 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 11:52:48,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 11:52:48,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 11:52:48,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 11:52:48,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:52:47" (1/4) ... [2022-01-10 11:52:48,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4017f6c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:52:48, skipping insertion in model container [2022-01-10 11:52:48,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:47" (2/4) ... [2022-01-10 11:52:48,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4017f6c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:52:48, skipping insertion in model container [2022-01-10 11:52:48,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:52:48" (3/4) ... [2022-01-10 11:52:48,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4017f6c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:52:48, skipping insertion in model container [2022-01-10 11:52:48,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:52:48" (4/4) ... [2022-01-10 11:52:48,209 INFO L111 eAbstractionObserver]: Analyzing ICFG test24-2.cTransformedIcfg [2022-01-10 11:52:48,212 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 11:52:48,212 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 11:52:48,242 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 11:52:48,247 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 11:52:48,247 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 11:52:48,256 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 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 11:52:48,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 11:52:48,260 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:52:48,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:52:48,260 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:52:48,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:52:48,267 INFO L85 PathProgramCache]: Analyzing trace with hash -674478515, now seen corresponding path program 1 times [2022-01-10 11:52:48,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:52:48,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91117747] [2022-01-10 11:52:48,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:52:48,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:52:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:52:48,412 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 11:52:48,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:52:48,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91117747] [2022-01-10 11:52:48,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91117747] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 11:52:48,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 11:52:48,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 11:52:48,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095435399] [2022-01-10 11:52:48,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 11:52:48,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 11:52:48,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:52:48,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 11:52:48,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 11:52:48,444 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 11:52:48,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:52:48,456 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2022-01-10 11:52:48,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 11:52:48,458 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2022-01-10 11:52:48,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:52:48,463 INFO L225 Difference]: With dead ends: 30 [2022-01-10 11:52:48,464 INFO L226 Difference]: Without dead ends: 13 [2022-01-10 11:52:48,466 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 11:52:48,471 INFO L933 BasicCegarLoop]: 19 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, 19 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 11:52:48,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 11:52:48,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-01-10 11:52:48,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-01-10 11:52:48,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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 11:52:48,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-01-10 11:52:48,500 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2022-01-10 11:52:48,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:52:48,500 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-01-10 11:52:48,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 11:52:48,502 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-01-10 11:52:48,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 11:52:48,503 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:52:48,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:52:48,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 11:52:48,503 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:52:48,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:52:48,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1212020353, now seen corresponding path program 1 times [2022-01-10 11:52:48,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:52:48,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124803265] [2022-01-10 11:52:48,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:52:48,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:52:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:52:48,623 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 11:52:48,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:52:48,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124803265] [2022-01-10 11:52:48,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124803265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 11:52:48,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 11:52:48,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 11:52:48,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828860130] [2022-01-10 11:52:48,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 11:52:48,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 11:52:48,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:52:48,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 11:52:48,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 11:52:48,626 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 11:52:48,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:52:48,661 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-01-10 11:52:48,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 11:52:48,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 11:52:48,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:52:48,662 INFO L225 Difference]: With dead ends: 24 [2022-01-10 11:52:48,663 INFO L226 Difference]: Without dead ends: 15 [2022-01-10 11:52:48,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 11:52:48,664 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 11:52:48,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 22 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 11:52:48,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-01-10 11:52:48,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2022-01-10 11:52:48,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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 11:52:48,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-01-10 11:52:48,667 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2022-01-10 11:52:48,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:52:48,668 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-01-10 11:52:48,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 11:52:48,668 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-01-10 11:52:48,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 11:52:48,668 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:52:48,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:52:48,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 11:52:48,669 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:52:48,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:52:48,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1088417443, now seen corresponding path program 1 times [2022-01-10 11:52:48,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:52:48,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996448148] [2022-01-10 11:52:48,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:52:48,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:52:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:52:48,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:52:48,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:52:48,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996448148] [2022-01-10 11:52:48,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996448148] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 11:52:48,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619303218] [2022-01-10 11:52:48,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:52:48,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 11:52:48,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 11:52:48,810 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 11:52:48,811 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 11:52:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:52:48,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 11:52:48,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 11:52:49,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:52:49,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 11:52:49,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:52:49,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619303218] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 11:52:49,271 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 11:52:49,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-10 11:52:49,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108295251] [2022-01-10 11:52:49,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 11:52:49,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 11:52:49,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:52:49,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 11:52:49,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 11:52:49,273 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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 11:52:49,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:52:49,348 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-01-10 11:52:49,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 11:52:49,349 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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 13 [2022-01-10 11:52:49,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:52:49,350 INFO L225 Difference]: With dead ends: 29 [2022-01-10 11:52:49,350 INFO L226 Difference]: Without dead ends: 20 [2022-01-10 11:52:49,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-10 11:52:49,351 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 11:52:49,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 32 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 11:52:49,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-10 11:52:49,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-01-10 11:52:49,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 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 11:52:49,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-01-10 11:52:49,355 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2022-01-10 11:52:49,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:52:49,355 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-01-10 11:52:49,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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 11:52:49,356 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-01-10 11:52:49,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 11:52:49,356 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:52:49,356 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:52:49,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 11:52:49,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 11:52:49,561 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:52:49,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:52:49,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1300583433, now seen corresponding path program 2 times [2022-01-10 11:52:49,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:52:49,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297130417] [2022-01-10 11:52:49,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:52:49,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:52:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:52:49,688 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:52:49,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:52:49,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297130417] [2022-01-10 11:52:49,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297130417] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 11:52:49,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321159211] [2022-01-10 11:52:49,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 11:52:49,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 11:52:49,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 11:52:49,691 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 11:52:49,692 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 11:52:50,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 11:52:50,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 11:52:50,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 11:52:50,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 11:52:50,569 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:52:50,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 11:52:51,199 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:52:51,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321159211] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 11:52:51,200 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 11:52:51,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-01-10 11:52:51,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13203102] [2022-01-10 11:52:51,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 11:52:51,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 11:52:51,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:52:51,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 11:52:51,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-01-10 11:52:51,202 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 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 11:52:57,803 WARN L228 SmtUtils]: Spent 5.13s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-10 11:53:04,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:53:04,820 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2022-01-10 11:53:04,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 11:53:04,820 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 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 11:53:04,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:53:04,821 INFO L225 Difference]: With dead ends: 39 [2022-01-10 11:53:04,821 INFO L226 Difference]: Without dead ends: 30 [2022-01-10 11:53:04,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=165, Invalid=297, Unknown=0, NotChecked=0, Total=462 [2022-01-10 11:53:04,823 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 11:53:04,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 102 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 16 Unchecked, 0.0s Time] [2022-01-10 11:53:04,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-10 11:53:04,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-01-10 11:53:04,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 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 11:53:04,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2022-01-10 11:53:04,829 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 19 [2022-01-10 11:53:04,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:53:04,830 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2022-01-10 11:53:04,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 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 11:53:04,830 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-01-10 11:53:04,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-10 11:53:04,830 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:53:04,830 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:53:04,847 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 11:53:05,031 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,SelfDestructingSolverStorable3 [2022-01-10 11:53:05,031 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:53:05,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:53:05,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1732502093, now seen corresponding path program 3 times [2022-01-10 11:53:05,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:53:05,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231416399] [2022-01-10 11:53:05,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:53:05,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:53:05,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:53:05,244 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:53:05,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:53:05,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231416399] [2022-01-10 11:53:05,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231416399] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 11:53:05,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373134232] [2022-01-10 11:53:05,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 11:53:05,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 11:53:05,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 11:53:05,253 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 11:53:05,255 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 11:53:34,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-01-10 11:53:34,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 11:53:34,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 85 conjunts are in the unsatisfiable core [2022-01-10 11:53:34,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 11:53:35,049 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:53:35,049 INFO L328 TraceCheckSpWp]: Computing backward predicates...