/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/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:09:21,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:09:21,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:09:22,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 13:09:22,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:09:22,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:09:22,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:09:22,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:09:22,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:09:22,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:09:22,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:09:22,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:09:22,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:09:22,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:09:22,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:09:22,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:09:22,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 13:09:22,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:09:22,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:09:22,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:09:22,089 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 13:09:22,107 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:09:22,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:09:22,108 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:09:22,108 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:09:22,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:09:22,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:09:22,109 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:09:22,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:09:22,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:09:22,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:09:22,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:09:22,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:09:22,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:09:22,111 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:09:22,111 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:09:22,111 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:09:22,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:09:22,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:09:22,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:09:22,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:09:22,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:09:22,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:09:22,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:09:22,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:09:22,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:09:22,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:09:22,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:09:22,113 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:09:22,113 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:09:22,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:09:22,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:09:22,114 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:09:22,114 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:09:22,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:09:22,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:09:22,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:09:22,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:09:22,317 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:09:22,319 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:09:22,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 13:09:22,376 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78dd15c76/8471659755e34fc2adaea47704a4dab0/FLAG413af33e4 [2022-01-10 13:09:22,776 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:09:22,777 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 13:09:22,785 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78dd15c76/8471659755e34fc2adaea47704a4dab0/FLAG413af33e4 [2022-01-10 13:09:22,796 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78dd15c76/8471659755e34fc2adaea47704a4dab0 [2022-01-10 13:09:22,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:09:22,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:09:22,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:09:22,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:09:22,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:09:22,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:09:22" (1/1) ... [2022-01-10 13:09:22,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@502ce00e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:22, skipping insertion in model container [2022-01-10 13:09:22,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:09:22" (1/1) ... [2022-01-10 13:09:22,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:09:22,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:09:22,997 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4105,4118] [2022-01-10 13:09:23,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:09:23,022 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:09:23,058 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4105,4118] [2022-01-10 13:09:23,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:09:23,102 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:09:23,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:23 WrapperNode [2022-01-10 13:09:23,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:09:23,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:09:23,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:09:23,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:09:23,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:23" (1/1) ... [2022-01-10 13:09:23,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:23" (1/1) ... [2022-01-10 13:09:23,160 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 257 [2022-01-10 13:09:23,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:09:23,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:09:23,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:09:23,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:09:23,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:23" (1/1) ... [2022-01-10 13:09:23,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:23" (1/1) ... [2022-01-10 13:09:23,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:23" (1/1) ... [2022-01-10 13:09:23,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:23" (1/1) ... [2022-01-10 13:09:23,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:23" (1/1) ... [2022-01-10 13:09:23,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:23" (1/1) ... [2022-01-10 13:09:23,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:23" (1/1) ... [2022-01-10 13:09:23,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:09:23,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:09:23,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:09:23,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:09:23,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:23" (1/1) ... [2022-01-10 13:09:23,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:09:23,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:09:23,240 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 13:09:23,249 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 13:09:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:09:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:09:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:09:23,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:09:23,349 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:09:23,351 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:09:23,625 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:09:23,631 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:09:23,631 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 13:09:23,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:09:23 BoogieIcfgContainer [2022-01-10 13:09:23,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:09:23,634 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:09:23,634 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:09:23,635 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:09:23,637 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:09:23" (1/1) ... [2022-01-10 13:09:23,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:09:23 BasicIcfg [2022-01-10 13:09:23,923 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:09:23,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:09:23,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:09:23,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:09:23,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:09:22" (1/4) ... [2022-01-10 13:09:23,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9dc5bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:09:23, skipping insertion in model container [2022-01-10 13:09:23,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:23" (2/4) ... [2022-01-10 13:09:23,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9dc5bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:09:23, skipping insertion in model container [2022-01-10 13:09:23,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:09:23" (3/4) ... [2022-01-10 13:09:23,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9dc5bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:09:23, skipping insertion in model container [2022-01-10 13:09:23,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:09:23" (4/4) ... [2022-01-10 13:09:23,932 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-10 13:09:23,936 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:09:23,936 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 13:09:23,990 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:09:23,996 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 13:09:23,996 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 13:09:24,009 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 62 states have (on average 1.6935483870967742) internal successors, (105), 63 states have internal predecessors, (105), 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 13:09:24,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 13:09:24,015 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:09:24,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:09:24,015 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:09:24,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:09:24,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1576918892, now seen corresponding path program 1 times [2022-01-10 13:09:24,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:09:24,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968512480] [2022-01-10 13:09:24,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:09:24,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:09:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:09:24,368 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 13:09:24,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:09:24,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968512480] [2022-01-10 13:09:24,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968512480] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:09:24,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:09:24,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:09:24,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034287296] [2022-01-10 13:09:24,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:09:24,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:09:24,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:09:24,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:09:24,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:09:24,403 INFO L87 Difference]: Start difference. First operand has 64 states, 62 states have (on average 1.6935483870967742) internal successors, (105), 63 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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 13:09:24,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:09:24,462 INFO L93 Difference]: Finished difference Result 146 states and 230 transitions. [2022-01-10 13:09:24,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:09:24,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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 37 [2022-01-10 13:09:24,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:09:24,473 INFO L225 Difference]: With dead ends: 146 [2022-01-10 13:09:24,474 INFO L226 Difference]: Without dead ends: 95 [2022-01-10 13:09:24,479 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 13:09:24,482 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 61 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:09:24,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 211 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:09:24,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-01-10 13:09:24,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2022-01-10 13:09:24,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.4782608695652173) internal successors, (136), 92 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:09:24,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 136 transitions. [2022-01-10 13:09:24,520 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 136 transitions. Word has length 37 [2022-01-10 13:09:24,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:09:24,521 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 136 transitions. [2022-01-10 13:09:24,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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 13:09:24,521 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 136 transitions. [2022-01-10 13:09:24,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-10 13:09:24,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:09:24,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:09:24,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:09:24,523 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:09:24,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:09:24,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1846314933, now seen corresponding path program 1 times [2022-01-10 13:09:24,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:09:24,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665843451] [2022-01-10 13:09:24,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:09:24,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:09:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:09:24,750 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 13:09:24,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:09:24,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665843451] [2022-01-10 13:09:24,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665843451] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:09:24,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:09:24,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:09:24,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317380512] [2022-01-10 13:09:24,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:09:24,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:09:24,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:09:24,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:09:24,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:09:24,754 INFO L87 Difference]: Start difference. First operand 93 states and 136 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 13:09:24,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:09:24,793 INFO L93 Difference]: Finished difference Result 225 states and 344 transitions. [2022-01-10 13:09:24,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:09:24,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2022-01-10 13:09:24,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:09:24,802 INFO L225 Difference]: With dead ends: 225 [2022-01-10 13:09:24,803 INFO L226 Difference]: Without dead ends: 151 [2022-01-10 13:09:24,803 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 13:09:24,804 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 46 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:09:24,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 176 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:09:24,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-01-10 13:09:24,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2022-01-10 13:09:24,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.5135135135135136) internal successors, (224), 148 states have internal predecessors, (224), 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 13:09:24,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 224 transitions. [2022-01-10 13:09:24,833 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 224 transitions. Word has length 38 [2022-01-10 13:09:24,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:09:24,833 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 224 transitions. [2022-01-10 13:09:24,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 13:09:24,834 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 224 transitions. [2022-01-10 13:09:24,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-10 13:09:24,835 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:09:24,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:09:24,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:09:24,841 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:09:24,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:09:24,846 INFO L85 PathProgramCache]: Analyzing trace with hash -2045155030, now seen corresponding path program 1 times [2022-01-10 13:09:24,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:09:24,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076880119] [2022-01-10 13:09:24,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:09:24,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:09:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:09:25,211 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 13:09:25,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:09:25,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076880119] [2022-01-10 13:09:25,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076880119] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:09:25,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:09:25,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:09:25,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862270828] [2022-01-10 13:09:25,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:09:25,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:09:25,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:09:25,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:09:25,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:09:25,217 INFO L87 Difference]: Start difference. First operand 149 states and 224 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:09:25,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:09:25,811 INFO L93 Difference]: Finished difference Result 929 states and 1454 transitions. [2022-01-10 13:09:25,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 13:09:25,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-01-10 13:09:25,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:09:25,816 INFO L225 Difference]: With dead ends: 929 [2022-01-10 13:09:25,817 INFO L226 Difference]: Without dead ends: 799 [2022-01-10 13:09:25,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 13:09:25,824 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 368 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 13:09:25,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 611 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 13:09:25,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-01-10 13:09:25,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 277. [2022-01-10 13:09:25,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.5217391304347827) internal successors, (420), 276 states have internal predecessors, (420), 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 13:09:25,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 420 transitions. [2022-01-10 13:09:25,942 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 420 transitions. Word has length 39 [2022-01-10 13:09:25,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:09:25,943 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 420 transitions. [2022-01-10 13:09:25,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:09:25,943 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 420 transitions. [2022-01-10 13:09:25,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 13:09:25,945 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:09:25,945 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:09:25,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:09:25,946 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:09:25,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:09:25,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1670444872, now seen corresponding path program 1 times [2022-01-10 13:09:25,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:09:25,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041238183] [2022-01-10 13:09:25,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:09:25,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:09:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:09:26,066 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 13:09:26,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:09:26,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041238183] [2022-01-10 13:09:26,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041238183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:09:26,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:09:26,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:09:26,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370034683] [2022-01-10 13:09:26,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:09:26,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:09:26,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:09:26,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:09:26,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:09:26,069 INFO L87 Difference]: Start difference. First operand 277 states and 420 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 13:09:28,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:09:30,344 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:09:30,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:09:30,598 INFO L93 Difference]: Finished difference Result 741 states and 1130 transitions. [2022-01-10 13:09:30,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:09:30,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2022-01-10 13:09:30,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:09:30,601 INFO L225 Difference]: With dead ends: 741 [2022-01-10 13:09:30,601 INFO L226 Difference]: Without dead ends: 483 [2022-01-10 13:09:30,602 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 13:09:30,603 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 52 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-01-10 13:09:30,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 205 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2022-01-10 13:09:30,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-01-10 13:09:30,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 465. [2022-01-10 13:09:30,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 464 states have (on average 1.4827586206896552) internal successors, (688), 464 states have internal predecessors, (688), 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 13:09:30,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 688 transitions. [2022-01-10 13:09:30,720 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 688 transitions. Word has length 41 [2022-01-10 13:09:30,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:09:30,721 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 688 transitions. [2022-01-10 13:09:30,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 13:09:30,722 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 688 transitions. [2022-01-10 13:09:30,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 13:09:30,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:09:30,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:09:30,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:09:30,726 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:09:30,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:09:30,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1671457766, now seen corresponding path program 1 times [2022-01-10 13:09:30,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:09:30,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494513653] [2022-01-10 13:09:30,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:09:30,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:09:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:09:31,028 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 13:09:31,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:09:31,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494513653] [2022-01-10 13:09:31,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494513653] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:09:31,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:09:31,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:09:31,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739067328] [2022-01-10 13:09:31,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:09:31,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:09:31,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:09:31,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:09:31,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:09:31,030 INFO L87 Difference]: Start difference. First operand 465 states and 688 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 13:09:32,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:09:32,009 INFO L93 Difference]: Finished difference Result 1809 states and 2698 transitions. [2022-01-10 13:09:32,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 13:09:32,010 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 41 [2022-01-10 13:09:32,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:09:32,015 INFO L225 Difference]: With dead ends: 1809 [2022-01-10 13:09:32,015 INFO L226 Difference]: Without dead ends: 1363 [2022-01-10 13:09:32,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 13:09:32,017 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 359 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 13:09:32,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 626 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 13:09:32,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2022-01-10 13:09:32,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 465. [2022-01-10 13:09:32,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 464 states have (on average 1.4741379310344827) internal successors, (684), 464 states have internal predecessors, (684), 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 13:09:32,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 684 transitions. [2022-01-10 13:09:32,212 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 684 transitions. Word has length 41 [2022-01-10 13:09:32,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:09:32,215 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 684 transitions. [2022-01-10 13:09:32,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 13:09:32,216 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 684 transitions. [2022-01-10 13:09:32,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 13:09:32,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:09:32,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:09:32,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:09:32,219 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:09:32,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:09:32,219 INFO L85 PathProgramCache]: Analyzing trace with hash 992120374, now seen corresponding path program 1 times [2022-01-10 13:09:32,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:09:32,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665638055] [2022-01-10 13:09:32,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:09:32,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:09:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:09:32,286 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 13:09:32,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:09:32,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665638055] [2022-01-10 13:09:32,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665638055] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:09:32,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:09:32,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:09:32,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506724945] [2022-01-10 13:09:32,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:09:32,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:09:32,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:09:32,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:09:32,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:09:32,289 INFO L87 Difference]: Start difference. First operand 465 states and 684 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 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 13:09:32,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:09:32,536 INFO L93 Difference]: Finished difference Result 1125 states and 1666 transitions. [2022-01-10 13:09:32,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:09:32,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 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 42 [2022-01-10 13:09:32,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:09:32,539 INFO L225 Difference]: With dead ends: 1125 [2022-01-10 13:09:32,539 INFO L226 Difference]: Without dead ends: 679 [2022-01-10 13:09:32,540 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 13:09:32,541 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 53 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:09:32,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 192 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:09:32,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-01-10 13:09:32,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 677. [2022-01-10 13:09:32,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 676 states have (on average 1.455621301775148) internal successors, (984), 676 states have internal predecessors, (984), 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 13:09:32,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 984 transitions. [2022-01-10 13:09:32,768 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 984 transitions. Word has length 42 [2022-01-10 13:09:32,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:09:32,768 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 984 transitions. [2022-01-10 13:09:32,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 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 13:09:32,768 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 984 transitions. [2022-01-10 13:09:32,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 13:09:32,769 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:09:32,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:09:32,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:09:32,769 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:09:32,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:09:32,770 INFO L85 PathProgramCache]: Analyzing trace with hash 245340752, now seen corresponding path program 1 times [2022-01-10 13:09:32,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:09:32,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224741161] [2022-01-10 13:09:32,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:09:32,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:09:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:09:32,863 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 13:09:32,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:09:32,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224741161] [2022-01-10 13:09:32,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224741161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:09:32,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:09:32,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:09:32,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241764786] [2022-01-10 13:09:32,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:09:32,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:09:32,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:09:32,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:09:32,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:09:32,865 INFO L87 Difference]: Start difference. First operand 677 states and 984 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 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 13:09:33,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:09:33,208 INFO L93 Difference]: Finished difference Result 1551 states and 2272 transitions. [2022-01-10 13:09:33,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:09:33,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 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 42 [2022-01-10 13:09:33,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:09:33,213 INFO L225 Difference]: With dead ends: 1551 [2022-01-10 13:09:33,213 INFO L226 Difference]: Without dead ends: 893 [2022-01-10 13:09:33,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 13:09:33,214 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 36 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:09:33,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 140 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:09:33,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2022-01-10 13:09:33,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 883. [2022-01-10 13:09:33,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.4489795918367347) internal successors, (1278), 882 states have internal predecessors, (1278), 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 13:09:33,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1278 transitions. [2022-01-10 13:09:33,462 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1278 transitions. Word has length 42 [2022-01-10 13:09:33,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:09:33,462 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1278 transitions. [2022-01-10 13:09:33,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 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 13:09:33,463 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1278 transitions. [2022-01-10 13:09:33,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 13:09:33,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:09:33,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:09:33,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:09:33,463 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:09:33,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:09:33,464 INFO L85 PathProgramCache]: Analyzing trace with hash 274684887, now seen corresponding path program 1 times [2022-01-10 13:09:33,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:09:33,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100566754] [2022-01-10 13:09:33,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:09:33,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:09:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:09:33,539 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 13:09:33,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:09:33,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100566754] [2022-01-10 13:09:33,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100566754] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:09:33,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:09:33,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:09:33,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402179444] [2022-01-10 13:09:33,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:09:33,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:09:33,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:09:33,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:09:33,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:09:33,541 INFO L87 Difference]: Start difference. First operand 883 states and 1278 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 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 13:09:33,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:09:33,939 INFO L93 Difference]: Finished difference Result 1195 states and 1731 transitions. [2022-01-10 13:09:33,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:09:33,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 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 42 [2022-01-10 13:09:33,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:09:33,944 INFO L225 Difference]: With dead ends: 1195 [2022-01-10 13:09:33,944 INFO L226 Difference]: Without dead ends: 1193 [2022-01-10 13:09:33,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:09:33,945 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 167 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:09:33,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 266 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:09:33,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2022-01-10 13:09:34,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 899. [2022-01-10 13:09:34,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 898 states have (on average 1.4276169265033407) internal successors, (1282), 898 states have internal predecessors, (1282), 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 13:09:34,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1282 transitions. [2022-01-10 13:09:34,210 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1282 transitions. Word has length 42 [2022-01-10 13:09:34,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:09:34,211 INFO L470 AbstractCegarLoop]: Abstraction has 899 states and 1282 transitions. [2022-01-10 13:09:34,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 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 13:09:34,211 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1282 transitions. [2022-01-10 13:09:34,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 13:09:34,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:09:34,212 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:09:34,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 13:09:34,212 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:09:34,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:09:34,213 INFO L85 PathProgramCache]: Analyzing trace with hash 492114352, now seen corresponding path program 1 times [2022-01-10 13:09:34,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:09:34,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161773914] [2022-01-10 13:09:34,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:09:34,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:09:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:09:34,330 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:09:34,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:09:34,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161773914] [2022-01-10 13:09:34,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161773914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:09:34,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:09:34,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:09:34,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839316046] [2022-01-10 13:09:34,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:09:34,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:09:34,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:09:34,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:09:34,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:09:34,333 INFO L87 Difference]: Start difference. First operand 899 states and 1282 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 13:09:34,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:09:34,593 INFO L93 Difference]: Finished difference Result 1601 states and 2289 transitions. [2022-01-10 13:09:34,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:09:34,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2022-01-10 13:09:34,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:09:34,597 INFO L225 Difference]: With dead ends: 1601 [2022-01-10 13:09:34,597 INFO L226 Difference]: Without dead ends: 723 [2022-01-10 13:09:34,598 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 13:09:34,598 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 40 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:09:34,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 178 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:09:34,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-01-10 13:09:34,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 697. [2022-01-10 13:09:34,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 696 states have (on average 1.410919540229885) internal successors, (982), 696 states have internal predecessors, (982), 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 13:09:34,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 982 transitions. [2022-01-10 13:09:34,860 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 982 transitions. Word has length 61 [2022-01-10 13:09:34,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:09:34,863 INFO L470 AbstractCegarLoop]: Abstraction has 697 states and 982 transitions. [2022-01-10 13:09:34,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 13:09:34,863 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 982 transitions. [2022-01-10 13:09:34,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 13:09:34,864 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:09:34,865 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:09:34,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 13:09:34,865 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:09:34,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:09:34,865 INFO L85 PathProgramCache]: Analyzing trace with hash -313030663, now seen corresponding path program 1 times [2022-01-10 13:09:34,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:09:34,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82952513] [2022-01-10 13:09:34,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:09:34,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:09:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:09:35,657 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:09:35,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:09:35,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82952513] [2022-01-10 13:09:35,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82952513] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 13:09:35,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863323819] [2022-01-10 13:09:35,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:09:35,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 13:09:35,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:09:35,660 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 13:09:35,661 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 13:09:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:09:36,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 51 conjunts are in the unsatisfiable core [2022-01-10 13:09:36,073 INFO L286 TraceCheckSpWp]: Computing forward predicates...