/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 19:06:01,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 19:06:01,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 19:06:01,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 19:06:01,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 19:06:01,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 19:06:01,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 19:06:01,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 19:06:01,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 19:06:01,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 19:06:01,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 19:06:01,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 19:06:01,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 19:06:01,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 19:06:01,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 19:06:01,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 19:06:01,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 19:06:01,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 19:06:01,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 19:06:01,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 19:06:01,310 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 19:06:01,335 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 19:06:01,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 19:06:01,336 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 19:06:01,336 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 19:06:01,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 19:06:01,336 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 19:06:01,337 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 19:06:01,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 19:06:01,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 19:06:01,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 19:06:01,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 19:06:01,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 19:06:01,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 19:06:01,337 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 19:06:01,337 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 19:06:01,337 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 19:06:01,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 19:06:01,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 19:06:01,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 19:06:01,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 19:06:01,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 19:06:01,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:06:01,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 19:06:01,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 19:06:01,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 19:06:01,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 19:06:01,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 19:06:01,338 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 19:06:01,338 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 19:06:01,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 19:06:01,339 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 19:06:01,339 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 19:06:01,339 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 19:06:01,339 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 19:06:01,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 19:06:01,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 19:06:01,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 19:06:01,544 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 19:06:01,544 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 19:06:01,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 19:06:01,606 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83a9ff77c/3beada7a6ede4fbcbacdb3bb31fd8367/FLAGe3a9bd272 [2022-01-10 19:06:02,041 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 19:06:02,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 19:06:02,052 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83a9ff77c/3beada7a6ede4fbcbacdb3bb31fd8367/FLAGe3a9bd272 [2022-01-10 19:06:02,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83a9ff77c/3beada7a6ede4fbcbacdb3bb31fd8367 [2022-01-10 19:06:02,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 19:06:02,069 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 19:06:02,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 19:06:02,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 19:06:02,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 19:06:02,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:06:02" (1/1) ... [2022-01-10 19:06:02,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@773b6d9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:02, skipping insertion in model container [2022-01-10 19:06:02,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:06:02" (1/1) ... [2022-01-10 19:06:02,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 19:06:02,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 19:06:02,365 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.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[10376,10389] [2022-01-10 19:06:02,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:06:02,427 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 19:06:02,479 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.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[10376,10389] [2022-01-10 19:06:02,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:06:02,515 INFO L208 MainTranslator]: Completed translation [2022-01-10 19:06:02,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:02 WrapperNode [2022-01-10 19:06:02,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 19:06:02,516 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 19:06:02,516 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 19:06:02,516 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 19:06:02,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:02" (1/1) ... [2022-01-10 19:06:02,540 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:02" (1/1) ... [2022-01-10 19:06:02,588 INFO L137 Inliner]: procedures = 27, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 807 [2022-01-10 19:06:02,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 19:06:02,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 19:06:02,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 19:06:02,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 19:06:02,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:02" (1/1) ... [2022-01-10 19:06:02,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:02" (1/1) ... [2022-01-10 19:06:02,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:02" (1/1) ... [2022-01-10 19:06:02,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:02" (1/1) ... [2022-01-10 19:06:02,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:02" (1/1) ... [2022-01-10 19:06:02,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:02" (1/1) ... [2022-01-10 19:06:02,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:02" (1/1) ... [2022-01-10 19:06:02,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 19:06:02,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 19:06:02,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 19:06:02,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 19:06:02,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:02" (1/1) ... [2022-01-10 19:06:02,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:06:02,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:06:02,729 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 19:06:02,730 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 19:06:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 19:06:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 19:06:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 19:06:02,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 19:06:02,895 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 19:06:02,896 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 19:06:03,513 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 19:06:03,518 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 19:06:03,518 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 19:06:03,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:06:03 BoogieIcfgContainer [2022-01-10 19:06:03,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 19:06:03,520 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 19:06:03,520 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 19:06:03,521 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 19:06:03,523 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:06:03" (1/1) ... [2022-01-10 19:06:03,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:06:03 BasicIcfg [2022-01-10 19:06:03,971 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 19:06:03,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 19:06:03,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 19:06:03,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 19:06:03,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:06:02" (1/4) ... [2022-01-10 19:06:03,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba6b338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:06:03, skipping insertion in model container [2022-01-10 19:06:03,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:02" (2/4) ... [2022-01-10 19:06:03,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba6b338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:06:03, skipping insertion in model container [2022-01-10 19:06:03,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:06:03" (3/4) ... [2022-01-10 19:06:03,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba6b338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 07:06:03, skipping insertion in model container [2022-01-10 19:06:03,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:06:03" (4/4) ... [2022-01-10 19:06:03,978 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-10 19:06:03,983 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 19:06:03,984 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 19:06:04,021 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 19:06:04,028 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 19:06:04,028 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 19:06:04,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 199 states have (on average 1.763819095477387) internal successors, (351), 200 states have internal predecessors, (351), 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 19:06:04,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 19:06:04,052 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:06:04,053 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:04,053 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:06:04,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:06:04,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1095767728, now seen corresponding path program 1 times [2022-01-10 19:06:04,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:06:04,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948046011] [2022-01-10 19:06:04,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:06:04,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:06:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:06:04,715 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 19:06:04,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:06:04,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948046011] [2022-01-10 19:06:04,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948046011] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:06:04,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:06:04,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:06:04,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336517392] [2022-01-10 19:06:04,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:06:04,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:06:04,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:06:04,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:06:04,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:06:04,746 INFO L87 Difference]: Start difference. First operand has 201 states, 199 states have (on average 1.763819095477387) internal successors, (351), 200 states have internal predecessors, (351), 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 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 19:06:06,187 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:06:06,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:06:06,370 INFO L93 Difference]: Finished difference Result 391 states and 653 transitions. [2022-01-10 19:06:06,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:06:06,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 107 [2022-01-10 19:06:06,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:06:06,384 INFO L225 Difference]: With dead ends: 391 [2022-01-10 19:06:06,385 INFO L226 Difference]: Without dead ends: 301 [2022-01-10 19:06:06,386 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 19:06:06,389 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 153 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 19:06:06,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 739 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 19:06:06,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-01-10 19:06:06,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 299. [2022-01-10 19:06:06,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.4463087248322148) internal successors, (431), 298 states have internal predecessors, (431), 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 19:06:06,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 431 transitions. [2022-01-10 19:06:06,516 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 431 transitions. Word has length 107 [2022-01-10 19:06:06,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:06:06,516 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 431 transitions. [2022-01-10 19:06:06,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 19:06:06,516 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 431 transitions. [2022-01-10 19:06:06,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 19:06:06,518 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:06:06,518 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:06,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 19:06:06,518 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:06:06,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:06:06,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1717583791, now seen corresponding path program 1 times [2022-01-10 19:06:06,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:06:06,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064972671] [2022-01-10 19:06:06,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:06:06,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:06:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:06:07,123 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 19:06:07,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:06:07,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064972671] [2022-01-10 19:06:07,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064972671] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:06:07,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:06:07,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 19:06:07,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194219172] [2022-01-10 19:06:07,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:06:07,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 19:06:07,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:06:07,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 19:06:07,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 19:06:07,126 INFO L87 Difference]: Start difference. First operand 299 states and 431 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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 19:06:10,500 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 19:06:14,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:06:14,522 INFO L93 Difference]: Finished difference Result 1790 states and 2765 transitions. [2022-01-10 19:06:14,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 19:06:14,523 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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 109 [2022-01-10 19:06:14,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:06:14,529 INFO L225 Difference]: With dead ends: 1790 [2022-01-10 19:06:14,530 INFO L226 Difference]: Without dead ends: 1551 [2022-01-10 19:06:14,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-10 19:06:14,532 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 2522 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2522 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-01-10 19:06:14,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2522 Valid, 1299 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 919 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-01-10 19:06:14,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2022-01-10 19:06:14,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 712. [2022-01-10 19:06:14,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 711 states have (on average 1.5091420534458508) internal successors, (1073), 711 states have internal predecessors, (1073), 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 19:06:14,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1073 transitions. [2022-01-10 19:06:14,738 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1073 transitions. Word has length 109 [2022-01-10 19:06:14,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:06:14,739 INFO L470 AbstractCegarLoop]: Abstraction has 712 states and 1073 transitions. [2022-01-10 19:06:14,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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 19:06:14,739 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1073 transitions. [2022-01-10 19:06:14,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 19:06:14,741 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:06:14,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:14,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 19:06:14,742 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:06:14,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:06:14,742 INFO L85 PathProgramCache]: Analyzing trace with hash 910655296, now seen corresponding path program 1 times [2022-01-10 19:06:14,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:06:14,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243531267] [2022-01-10 19:06:14,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:06:14,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:06:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:06:15,349 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 19:06:15,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:06:15,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243531267] [2022-01-10 19:06:15,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243531267] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:06:15,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:06:15,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 19:06:15,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482315137] [2022-01-10 19:06:15,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:06:15,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 19:06:15,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:06:15,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 19:06:15,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 19:06:15,351 INFO L87 Difference]: Start difference. First operand 712 states and 1073 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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 19:06:19,702 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 19:06:21,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:06:24,836 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.93s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:06:29,764 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:06:31,914 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:06:34,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:06:37,187 WARN L534 Checker$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 19:06:37,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:06:37,539 INFO L93 Difference]: Finished difference Result 4772 states and 7460 transitions. [2022-01-10 19:06:37,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 19:06:37,540 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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 110 [2022-01-10 19:06:37,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:06:37,552 INFO L225 Difference]: With dead ends: 4772 [2022-01-10 19:06:37,552 INFO L226 Difference]: Without dead ends: 4215 [2022-01-10 19:06:37,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-01-10 19:06:37,554 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 1505 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 16 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 2132 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2022-01-10 19:06:37,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1505 Valid, 2132 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1038 Invalid, 7 Unknown, 0 Unchecked, 20.2s Time] [2022-01-10 19:06:37,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4215 states. [2022-01-10 19:06:38,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4215 to 2397. [2022-01-10 19:06:38,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2397 states, 2396 states have (on average 1.5484140233722872) internal successors, (3710), 2396 states have internal predecessors, (3710), 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 19:06:38,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 3710 transitions. [2022-01-10 19:06:38,413 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 3710 transitions. Word has length 110 [2022-01-10 19:06:38,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:06:38,413 INFO L470 AbstractCegarLoop]: Abstraction has 2397 states and 3710 transitions. [2022-01-10 19:06:38,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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 19:06:38,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 3710 transitions. [2022-01-10 19:06:38,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 19:06:38,416 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:06:38,416 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:38,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 19:06:38,416 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:06:38,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:06:38,417 INFO L85 PathProgramCache]: Analyzing trace with hash -216123199, now seen corresponding path program 1 times [2022-01-10 19:06:38,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:06:38,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726819506] [2022-01-10 19:06:38,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:06:38,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:06:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:06:38,935 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 19:06:38,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:06:38,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726819506] [2022-01-10 19:06:38,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726819506] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:06:38,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:06:38,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 19:06:38,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214272666] [2022-01-10 19:06:38,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:06:38,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 19:06:38,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:06:38,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 19:06:38,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 19:06:38,937 INFO L87 Difference]: Start difference. First operand 2397 states and 3710 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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 19:06:41,669 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:06:45,468 WARN L534 Checker$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 19:06:49,131 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 19:06:49,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:06:49,813 INFO L93 Difference]: Finished difference Result 6698 states and 10539 transitions. [2022-01-10 19:06:49,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 19:06:49,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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 110 [2022-01-10 19:06:49,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:06:49,829 INFO L225 Difference]: With dead ends: 6698 [2022-01-10 19:06:49,829 INFO L226 Difference]: Without dead ends: 4796 [2022-01-10 19:06:49,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-01-10 19:06:49,832 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 558 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-01-10 19:06:49,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [558 Valid, 1684 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 780 Invalid, 3 Unknown, 0 Unchecked, 8.8s Time] [2022-01-10 19:06:49,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4796 states. [2022-01-10 19:06:50,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4796 to 2424. [2022-01-10 19:06:50,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 2423 states have (on average 1.5567478332645481) internal successors, (3772), 2423 states have internal predecessors, (3772), 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 19:06:50,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 3772 transitions. [2022-01-10 19:06:50,698 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 3772 transitions. Word has length 110 [2022-01-10 19:06:50,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:06:50,699 INFO L470 AbstractCegarLoop]: Abstraction has 2424 states and 3772 transitions. [2022-01-10 19:06:50,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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 19:06:50,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 3772 transitions. [2022-01-10 19:06:50,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 19:06:50,701 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:06:50,701 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:50,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 19:06:50,701 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:06:50,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:06:50,701 INFO L85 PathProgramCache]: Analyzing trace with hash -998403152, now seen corresponding path program 1 times [2022-01-10 19:06:50,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:06:50,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363477453] [2022-01-10 19:06:50,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:06:50,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:06:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:06:51,200 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 19:06:51,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:06:51,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363477453] [2022-01-10 19:06:51,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363477453] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:06:51,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:06:51,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 19:06:51,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021524247] [2022-01-10 19:06:51,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:06:51,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 19:06:51,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:06:51,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 19:06:51,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 19:06:51,202 INFO L87 Difference]: Start difference. First operand 2424 states and 3772 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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 19:06:54,133 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 19:07:01,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:07:03,875 WARN L534 Checker$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 19:07:07,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:07,951 INFO L93 Difference]: Finished difference Result 13561 states and 21333 transitions. [2022-01-10 19:07:07,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 19:07:07,953 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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 111 [2022-01-10 19:07:07,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:07,983 INFO L225 Difference]: With dead ends: 13561 [2022-01-10 19:07:07,983 INFO L226 Difference]: Without dead ends: 11478 [2022-01-10 19:07:07,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-10 19:07:07,987 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 1058 mSDsluCounter, 2255 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 14 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:07,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1058 Valid, 2548 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1147 Invalid, 3 Unknown, 0 Unchecked, 10.8s Time] [2022-01-10 19:07:07,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11478 states. [2022-01-10 19:07:11,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11478 to 7420. [2022-01-10 19:07:11,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7420 states, 7419 states have (on average 1.5658444534303815) internal successors, (11617), 7419 states have internal predecessors, (11617), 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 19:07:11,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7420 states to 7420 states and 11617 transitions. [2022-01-10 19:07:11,584 INFO L78 Accepts]: Start accepts. Automaton has 7420 states and 11617 transitions. Word has length 111 [2022-01-10 19:07:11,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:11,585 INFO L470 AbstractCegarLoop]: Abstraction has 7420 states and 11617 transitions. [2022-01-10 19:07:11,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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 19:07:11,585 INFO L276 IsEmpty]: Start isEmpty. Operand 7420 states and 11617 transitions. [2022-01-10 19:07:11,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 19:07:11,590 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:11,590 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:07:11,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 19:07:11,590 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:11,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:11,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1095280750, now seen corresponding path program 1 times [2022-01-10 19:07:11,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:11,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796670794] [2022-01-10 19:07:11,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:11,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:12,017 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 19:07:12,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:12,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796670794] [2022-01-10 19:07:12,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796670794] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:12,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:12,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 19:07:12,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793704934] [2022-01-10 19:07:12,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:12,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 19:07:12,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:12,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 19:07:12,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 19:07:12,019 INFO L87 Difference]: Start difference. First operand 7420 states and 11617 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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 19:07:14,686 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 []