/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_NONE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:51:32,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:51:32,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:51:32,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 00:51:32,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:51:32,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:51:32,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:51:32,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:51:32,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:51:32,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:51:32,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:51:32,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:51:32,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:51:32,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:51:32,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:51:32,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:51:32,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 00:51:32,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:51:32,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:51:32,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:51:32,884 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:51:32,897 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:51:32,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:51:32,898 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:51:32,898 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:51:32,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:51:32,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:51:32,899 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:51:32,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:51:32,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:51:32,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:51:32,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:51:32,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:51:32,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:51:32,899 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:51:32,899 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:51:32,900 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:51:32,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:51:32,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:51:32,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:51:32,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:51:32,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:51:32,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:51:32,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:51:32,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:51:32,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:51:32,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:51:32,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:51:32,901 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:51:32,901 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:51:32,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:51:32,901 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:51:32,901 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:51:32,901 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:51:32,902 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:51:33,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:51:33,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:51:33,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:51:33,106 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:51:33,106 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:51:33,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-11 00:51:33,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31e8593be/d96f5907694c4beea32c4dc756d15cb0/FLAG86238fe84 [2022-01-11 00:51:33,499 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:51:33,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-11 00:51:33,508 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31e8593be/d96f5907694c4beea32c4dc756d15cb0/FLAG86238fe84 [2022-01-11 00:51:33,519 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31e8593be/d96f5907694c4beea32c4dc756d15cb0 [2022-01-11 00:51:33,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:51:33,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:51:33,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:51:33,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:51:33,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:51:33,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:51:33" (1/1) ... [2022-01-11 00:51:33,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2291fc47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:51:33, skipping insertion in model container [2022-01-11 00:51:33,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:51:33" (1/1) ... [2022-01-11 00:51:33,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:51:33,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:51:33,728 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.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5807,5820] [2022-01-11 00:51:33,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:51:33,756 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:51:33,783 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.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5807,5820] [2022-01-11 00:51:33,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:51:33,803 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:51:33,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:51:33 WrapperNode [2022-01-11 00:51:33,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:51:33,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:51:33,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:51:33,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:51:33,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:51:33" (1/1) ... [2022-01-11 00:51:33,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:51:33" (1/1) ... [2022-01-11 00:51:33,835 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 399 [2022-01-11 00:51:33,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:51:33,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:51:33,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:51:33,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:51:33,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:51:33" (1/1) ... [2022-01-11 00:51:33,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:51:33" (1/1) ... [2022-01-11 00:51:33,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:51:33" (1/1) ... [2022-01-11 00:51:33,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:51:33" (1/1) ... [2022-01-11 00:51:33,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:51:33" (1/1) ... [2022-01-11 00:51:33,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:51:33" (1/1) ... [2022-01-11 00:51:33,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:51:33" (1/1) ... [2022-01-11 00:51:33,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:51:33,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:51:33,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:51:33,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:51:33,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:51:33" (1/1) ... [2022-01-11 00:51:33,871 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:51:33,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:51:33,888 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) [2022-01-11 00:51:33,906 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 [2022-01-11 00:51:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:51:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:51:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:51:33,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:51:34,062 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:51:34,063 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:51:34,419 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:51:34,424 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:51:34,425 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 00:51:34,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:51:34 BoogieIcfgContainer [2022-01-11 00:51:34,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:51:34,427 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:51:34,427 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:51:34,428 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:51:34,429 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:51:34" (1/1) ... [2022-01-11 00:51:34,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:51:34 BasicIcfg [2022-01-11 00:51:34,686 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:51:34,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:51:34,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:51:34,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:51:34,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:51:33" (1/4) ... [2022-01-11 00:51:34,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5abc629a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:51:34, skipping insertion in model container [2022-01-11 00:51:34,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:51:33" (2/4) ... [2022-01-11 00:51:34,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5abc629a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:51:34, skipping insertion in model container [2022-01-11 00:51:34,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:51:34" (3/4) ... [2022-01-11 00:51:34,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5abc629a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:51:34, skipping insertion in model container [2022-01-11 00:51:34,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:51:34" (4/4) ... [2022-01-11 00:51:34,694 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-11 00:51:34,698 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:51:34,698 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:51:34,742 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:51:34,746 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 [2022-01-11 00:51:34,747 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:51:34,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 97 states have (on average 1.7216494845360826) internal successors, (167), 98 states have internal predecessors, (167), 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) [2022-01-11 00:51:34,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-11 00:51:34,768 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:51:34,769 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:51:34,769 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:51:34,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:51:34,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1307175817, now seen corresponding path program 1 times [2022-01-11 00:51:34,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:51:34,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749661619] [2022-01-11 00:51:34,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:51:34,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:51:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:51:35,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:51:35,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:51:35,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749661619] [2022-01-11 00:51:35,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749661619] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:51:35,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:51:35,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:51:35,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183926682] [2022-01-11 00:51:35,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:51:35,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:51:35,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:51:35,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:51:35,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:51:35,252 INFO L87 Difference]: Start difference. First operand has 99 states, 97 states have (on average 1.7216494845360826) internal successors, (167), 98 states have internal predecessors, (167), 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 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2022-01-11 00:51:35,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:51:35,330 INFO L93 Difference]: Finished difference Result 221 states and 356 transitions. [2022-01-11 00:51:35,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:51:35,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2022-01-11 00:51:35,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:51:35,341 INFO L225 Difference]: With dead ends: 221 [2022-01-11 00:51:35,341 INFO L226 Difference]: Without dead ends: 150 [2022-01-11 00:51:35,343 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 [2022-01-11 00:51:35,345 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 108 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 337 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 [2022-01-11 00:51:35,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 337 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:51:35,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-01-11 00:51:35,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2022-01-11 00:51:35,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.4625850340136055) internal successors, (215), 147 states have internal predecessors, (215), 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) [2022-01-11 00:51:35,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 215 transitions. [2022-01-11 00:51:35,395 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 215 transitions. Word has length 60 [2022-01-11 00:51:35,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:51:35,396 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 215 transitions. [2022-01-11 00:51:35,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2022-01-11 00:51:35,397 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 215 transitions. [2022-01-11 00:51:35,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-11 00:51:35,399 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:51:35,399 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] [2022-01-11 00:51:35,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:51:35,400 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:51:35,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:51:35,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1153503069, now seen corresponding path program 1 times [2022-01-11 00:51:35,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:51:35,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929003487] [2022-01-11 00:51:35,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:51:35,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:51:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:51:35,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:51:35,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:51:35,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929003487] [2022-01-11 00:51:35,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929003487] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:51:35,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:51:35,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:51:35,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206011567] [2022-01-11 00:51:35,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:51:35,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:51:35,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:51:35,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:51:35,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:51:35,636 INFO L87 Difference]: Start difference. First operand 148 states and 215 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) [2022-01-11 00:51:35,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:51:35,672 INFO L93 Difference]: Finished difference Result 360 states and 551 transitions. [2022-01-11 00:51:35,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:51:35,673 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 [2022-01-11 00:51:35,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:51:35,677 INFO L225 Difference]: With dead ends: 360 [2022-01-11 00:51:35,677 INFO L226 Difference]: Without dead ends: 246 [2022-01-11 00:51:35,681 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 [2022-01-11 00:51:35,681 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 78 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 287 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 [2022-01-11 00:51:35,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 287 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:51:35,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-01-11 00:51:35,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 244. [2022-01-11 00:51:35,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.5102880658436213) internal successors, (367), 243 states have internal predecessors, (367), 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) [2022-01-11 00:51:35,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 367 transitions. [2022-01-11 00:51:35,703 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 367 transitions. Word has length 61 [2022-01-11 00:51:35,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:51:35,704 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 367 transitions. [2022-01-11 00:51:35,704 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) [2022-01-11 00:51:35,704 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 367 transitions. [2022-01-11 00:51:35,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-11 00:51:35,708 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:51:35,708 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] [2022-01-11 00:51:35,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:51:35,711 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:51:35,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:51:35,714 INFO L85 PathProgramCache]: Analyzing trace with hash 288660629, now seen corresponding path program 1 times [2022-01-11 00:51:35,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:51:35,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520425279] [2022-01-11 00:51:35,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:51:35,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:51:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:51:35,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:51:35,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:51:35,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520425279] [2022-01-11 00:51:35,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520425279] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:51:35,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:51:35,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:51:35,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122015664] [2022-01-11 00:51:35,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:51:35,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:51:35,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:51:35,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:51:35,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:51:35,941 INFO L87 Difference]: Start difference. First operand 244 states and 367 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2022-01-11 00:51:35,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:51:35,967 INFO L93 Difference]: Finished difference Result 632 states and 981 transitions. [2022-01-11 00:51:35,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:51:35,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2022-01-11 00:51:35,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:51:35,971 INFO L225 Difference]: With dead ends: 632 [2022-01-11 00:51:35,971 INFO L226 Difference]: Without dead ends: 422 [2022-01-11 00:51:35,975 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 [2022-01-11 00:51:35,978 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 73 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 283 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 [2022-01-11 00:51:35,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 283 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:51:35,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-01-11 00:51:35,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 420. [2022-01-11 00:51:35,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 1.5346062052505967) internal successors, (643), 419 states have internal predecessors, (643), 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) [2022-01-11 00:51:36,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 643 transitions. [2022-01-11 00:51:36,000 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 643 transitions. Word has length 62 [2022-01-11 00:51:36,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:51:36,001 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 643 transitions. [2022-01-11 00:51:36,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2022-01-11 00:51:36,001 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 643 transitions. [2022-01-11 00:51:36,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 00:51:36,001 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:51:36,001 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] [2022-01-11 00:51:36,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:51:36,002 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:51:36,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:51:36,002 INFO L85 PathProgramCache]: Analyzing trace with hash 565014657, now seen corresponding path program 1 times [2022-01-11 00:51:36,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:51:36,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696361069] [2022-01-11 00:51:36,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:51:36,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:51:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:51:36,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:51:36,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:51:36,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696361069] [2022-01-11 00:51:36,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696361069] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:51:36,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:51:36,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:51:36,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888920596] [2022-01-11 00:51:36,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:51:36,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:51:36,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:51:36,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:51:36,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:51:36,193 INFO L87 Difference]: Start difference. First operand 420 states and 643 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:51:36,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:51:36,230 INFO L93 Difference]: Finished difference Result 1128 states and 1757 transitions. [2022-01-11 00:51:36,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:51:36,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-11 00:51:36,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:51:36,234 INFO L225 Difference]: With dead ends: 1128 [2022-01-11 00:51:36,235 INFO L226 Difference]: Without dead ends: 742 [2022-01-11 00:51:36,236 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 [2022-01-11 00:51:36,240 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 68 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 279 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 [2022-01-11 00:51:36,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 279 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:51:36,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-01-11 00:51:36,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 740. [2022-01-11 00:51:36,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 739 states have (on average 1.5412719891745603) internal successors, (1139), 739 states have internal predecessors, (1139), 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) [2022-01-11 00:51:36,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1139 transitions. [2022-01-11 00:51:36,263 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1139 transitions. Word has length 63 [2022-01-11 00:51:36,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:51:36,265 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 1139 transitions. [2022-01-11 00:51:36,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:51:36,265 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1139 transitions. [2022-01-11 00:51:36,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 00:51:36,267 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:51:36,267 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] [2022-01-11 00:51:36,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:51:36,268 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:51:36,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:51:36,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1184209587, now seen corresponding path program 1 times [2022-01-11 00:51:36,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:51:36,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316086532] [2022-01-11 00:51:36,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:51:36,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:51:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:51:36,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:51:36,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:51:36,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316086532] [2022-01-11 00:51:36,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316086532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:51:36,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:51:36,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 00:51:36,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077906568] [2022-01-11 00:51:36,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:51:36,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 00:51:36,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:51:36,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 00:51:36,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:51:36,726 INFO L87 Difference]: Start difference. First operand 740 states and 1139 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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) [2022-01-11 00:51:39,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:51:39,238 INFO L93 Difference]: Finished difference Result 7800 states and 12189 transitions. [2022-01-11 00:51:39,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 00:51:39,240 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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 64 [2022-01-11 00:51:39,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:51:39,259 INFO L225 Difference]: With dead ends: 7800 [2022-01-11 00:51:39,259 INFO L226 Difference]: Without dead ends: 7094 [2022-01-11 00:51:39,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-01-11 00:51:39,262 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 986 mSDsluCounter, 2198 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-11 00:51:39,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [986 Valid, 2326 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-11 00:51:39,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7094 states. [2022-01-11 00:51:39,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7094 to 1444. [2022-01-11 00:51:39,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 1.5322245322245323) internal successors, (2211), 1443 states have internal predecessors, (2211), 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) [2022-01-11 00:51:39,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 2211 transitions. [2022-01-11 00:51:39,727 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 2211 transitions. Word has length 64 [2022-01-11 00:51:39,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:51:39,728 INFO L470 AbstractCegarLoop]: Abstraction has 1444 states and 2211 transitions. [2022-01-11 00:51:39,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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) [2022-01-11 00:51:39,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 2211 transitions. [2022-01-11 00:51:39,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 00:51:39,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:51:39,729 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] [2022-01-11 00:51:39,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:51:39,729 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:51:39,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:51:39,729 INFO L85 PathProgramCache]: Analyzing trace with hash -171506383, now seen corresponding path program 1 times [2022-01-11 00:51:39,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:51:39,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103182496] [2022-01-11 00:51:39,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:51:39,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:51:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:51:39,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:51:39,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:51:39,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103182496] [2022-01-11 00:51:39,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103182496] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:51:39,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:51:39,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:51:39,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692215288] [2022-01-11 00:51:39,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:51:39,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:51:39,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:51:39,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:51:39,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:51:39,843 INFO L87 Difference]: Start difference. First operand 1444 states and 2211 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2022-01-11 00:51:41,926 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 [] [2022-01-11 00:51:42,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:51:42,826 INFO L93 Difference]: Finished difference Result 4056 states and 6197 transitions. [2022-01-11 00:51:42,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:51:42,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2022-01-11 00:51:42,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:51:42,834 INFO L225 Difference]: With dead ends: 4056 [2022-01-11 00:51:42,834 INFO L226 Difference]: Without dead ends: 2646 [2022-01-11 00:51:42,836 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 [2022-01-11 00:51:42,837 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 84 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:51:42,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 331 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-11 00:51:42,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2022-01-11 00:51:43,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2580. [2022-01-11 00:51:43,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2580 states, 2579 states have (on average 1.4963164017060877) internal successors, (3859), 2579 states have internal predecessors, (3859), 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) [2022-01-11 00:51:43,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 3859 transitions. [2022-01-11 00:51:43,582 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 3859 transitions. Word has length 66 [2022-01-11 00:51:43,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:51:43,582 INFO L470 AbstractCegarLoop]: Abstraction has 2580 states and 3859 transitions. [2022-01-11 00:51:43,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2022-01-11 00:51:43,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 3859 transitions. [2022-01-11 00:51:43,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 00:51:43,583 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:51:43,583 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] [2022-01-11 00:51:43,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:51:43,583 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:51:43,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:51:43,584 INFO L85 PathProgramCache]: Analyzing trace with hash -170493489, now seen corresponding path program 1 times [2022-01-11 00:51:43,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:51:43,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828749727] [2022-01-11 00:51:43,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:51:43,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:51:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:51:43,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:51:43,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:51:43,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828749727] [2022-01-11 00:51:43,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828749727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:51:43,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:51:43,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 00:51:43,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295854750] [2022-01-11 00:51:43,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:51:43,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 00:51:43,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:51:43,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 00:51:43,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:51:43,956 INFO L87 Difference]: Start difference. First operand 2580 states and 3859 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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) [2022-01-11 00:51:50,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:51:50,564 INFO L93 Difference]: Finished difference Result 15320 states and 22989 transitions. [2022-01-11 00:51:50,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 00:51:50,565 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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 66 [2022-01-11 00:51:50,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:51:50,599 INFO L225 Difference]: With dead ends: 15320 [2022-01-11 00:51:50,599 INFO L226 Difference]: Without dead ends: 12774 [2022-01-11 00:51:50,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-01-11 00:51:50,604 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 975 mSDsluCounter, 2183 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 2348 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:51:50,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 2348 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-11 00:51:50,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12774 states. [2022-01-11 00:51:52,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12774 to 2580. [2022-01-11 00:51:52,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2580 states, 2579 states have (on average 1.4901124466847615) internal successors, (3843), 2579 states have internal predecessors, (3843), 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) [2022-01-11 00:51:52,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 3843 transitions. [2022-01-11 00:51:52,037 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 3843 transitions. Word has length 66 [2022-01-11 00:51:52,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:51:52,038 INFO L470 AbstractCegarLoop]: Abstraction has 2580 states and 3843 transitions. [2022-01-11 00:51:52,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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) [2022-01-11 00:51:52,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 3843 transitions. [2022-01-11 00:51:52,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 00:51:52,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:51:52,038 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] [2022-01-11 00:51:52,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:51:52,039 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:51:52,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:51:52,039 INFO L85 PathProgramCache]: Analyzing trace with hash 816145346, now seen corresponding path program 1 times [2022-01-11 00:51:52,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:51:52,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451969684] [2022-01-11 00:51:52,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:51:52,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:51:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:51:52,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:51:52,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:51:52,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451969684] [2022-01-11 00:51:52,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451969684] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:51:52,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:51:52,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:51:52,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725354643] [2022-01-11 00:51:52,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:51:52,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:51:52,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:51:52,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:51:52,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:51:52,105 INFO L87 Difference]: Start difference. First operand 2580 states and 3843 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2022-01-11 00:51:54,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:51:54,081 INFO L93 Difference]: Finished difference Result 6360 states and 9493 transitions. [2022-01-11 00:51:54,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:51:54,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2022-01-11 00:51:54,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:51:54,088 INFO L225 Difference]: With dead ends: 6360 [2022-01-11 00:51:54,089 INFO L226 Difference]: Without dead ends: 3814 [2022-01-11 00:51:54,092 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 [2022-01-11 00:51:54,092 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 85 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 303 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 [2022-01-11 00:51:54,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 303 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:51:54,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3814 states. [2022-01-11 00:51:56,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3814 to 3812. [2022-01-11 00:51:56,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3812 states, 3811 states have (on average 1.474416163736552) internal successors, (5619), 3811 states have internal predecessors, (5619), 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) [2022-01-11 00:51:56,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3812 states to 3812 states and 5619 transitions. [2022-01-11 00:51:56,141 INFO L78 Accepts]: Start accepts. Automaton has 3812 states and 5619 transitions. Word has length 67 [2022-01-11 00:51:56,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:51:56,141 INFO L470 AbstractCegarLoop]: Abstraction has 3812 states and 5619 transitions. [2022-01-11 00:51:56,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2022-01-11 00:51:56,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3812 states and 5619 transitions. [2022-01-11 00:51:56,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 00:51:56,141 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:51:56,142 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] [2022-01-11 00:51:56,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:51:56,142 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:51:56,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:51:56,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1020573092, now seen corresponding path program 1 times [2022-01-11 00:51:56,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:51:56,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376834053] [2022-01-11 00:51:56,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:51:56,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:51:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:51:56,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:51:56,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:51:56,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376834053] [2022-01-11 00:51:56,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376834053] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:51:56,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:51:56,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:51:56,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017645768] [2022-01-11 00:51:56,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:51:56,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:51:56,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:51:56,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:51:56,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:51:56,244 INFO L87 Difference]: Start difference. First operand 3812 states and 5619 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2022-01-11 00:51:58,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:51:58,884 INFO L93 Difference]: Finished difference Result 8826 states and 13063 transitions. [2022-01-11 00:51:58,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:51:58,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2022-01-11 00:51:58,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:51:58,891 INFO L225 Difference]: With dead ends: 8826 [2022-01-11 00:51:58,892 INFO L226 Difference]: Without dead ends: 5048 [2022-01-11 00:51:58,895 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 [2022-01-11 00:51:58,895 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 58 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 219 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 [2022-01-11 00:51:58,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 219 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:51:58,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5048 states. [2022-01-11 00:52:01,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5048 to 5014. [2022-01-11 00:52:01,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5014 states, 5013 states have (on average 1.46918013165769) internal successors, (7365), 5013 states have internal predecessors, (7365), 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) [2022-01-11 00:52:01,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5014 states to 5014 states and 7365 transitions. [2022-01-11 00:52:01,463 INFO L78 Accepts]: Start accepts. Automaton has 5014 states and 7365 transitions. Word has length 67 [2022-01-11 00:52:01,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:52:01,463 INFO L470 AbstractCegarLoop]: Abstraction has 5014 states and 7365 transitions. [2022-01-11 00:52:01,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2022-01-11 00:52:01,463 INFO L276 IsEmpty]: Start isEmpty. Operand 5014 states and 7365 transitions. [2022-01-11 00:52:01,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 00:52:01,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:52:01,463 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:52:01,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:52:01,464 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:52:01,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:52:01,464 INFO L85 PathProgramCache]: Analyzing trace with hash -991228957, now seen corresponding path program 1 times [2022-01-11 00:52:01,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:52:01,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038601036] [2022-01-11 00:52:01,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:52:01,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:52:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:52:01,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:52:01,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:52:01,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038601036] [2022-01-11 00:52:01,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038601036] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:52:01,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:52:01,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:52:01,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81260950] [2022-01-11 00:52:01,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:52:01,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:52:01,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:52:01,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:52:01,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:52:01,548 INFO L87 Difference]: Start difference. First operand 5014 states and 7365 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2022-01-11 00:52:05,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:52:05,167 INFO L93 Difference]: Finished difference Result 7102 states and 10450 transitions. [2022-01-11 00:52:05,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:52:05,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 67 [2022-01-11 00:52:05,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:52:05,178 INFO L225 Difference]: With dead ends: 7102 [2022-01-11 00:52:05,178 INFO L226 Difference]: Without dead ends: 7100 [2022-01-11 00:52:05,179 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 [2022-01-11 00:52:05,179 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 263 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 423 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 [2022-01-11 00:52:05,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 423 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:52:05,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7100 states. [2022-01-11 00:52:07,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7100 to 5078. [2022-01-11 00:52:07,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5078 states, 5077 states have (on average 1.4538113058893047) internal successors, (7381), 5077 states have internal predecessors, (7381), 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) [2022-01-11 00:52:07,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5078 states to 5078 states and 7381 transitions. [2022-01-11 00:52:07,820 INFO L78 Accepts]: Start accepts. Automaton has 5078 states and 7381 transitions. Word has length 67 [2022-01-11 00:52:07,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:52:07,821 INFO L470 AbstractCegarLoop]: Abstraction has 5078 states and 7381 transitions. [2022-01-11 00:52:07,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2022-01-11 00:52:07,821 INFO L276 IsEmpty]: Start isEmpty. Operand 5078 states and 7381 transitions. [2022-01-11 00:52:07,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-11 00:52:07,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:52:07,824 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:52:07,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:52:07,825 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:52:07,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:52:07,825 INFO L85 PathProgramCache]: Analyzing trace with hash -2034992021, now seen corresponding path program 1 times [2022-01-11 00:52:07,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:52:07,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537176623] [2022-01-11 00:52:07,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:52:07,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:52:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:52:07,916 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:52:07,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:52:07,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537176623] [2022-01-11 00:52:07,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537176623] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:52:07,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:52:07,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:52:07,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355489417] [2022-01-11 00:52:07,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:52:07,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:52:07,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:52:07,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:52:07,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:52:07,918 INFO L87 Difference]: Start difference. First operand 5078 states and 7381 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2022-01-11 00:52:09,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:52:09,987 INFO L93 Difference]: Finished difference Result 8960 states and 13048 transitions. [2022-01-11 00:52:09,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:52:09,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 94 [2022-01-11 00:52:09,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:52:10,004 INFO L225 Difference]: With dead ends: 8960 [2022-01-11 00:52:10,004 INFO L226 Difference]: Without dead ends: 3918 [2022-01-11 00:52:10,008 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 [2022-01-11 00:52:10,008 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 62 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 288 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 [2022-01-11 00:52:10,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 288 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:52:10,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3918 states. [2022-01-11 00:52:11,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3918 to 3820. [2022-01-11 00:52:12,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3820 states, 3819 states have (on average 1.446713799423933) internal successors, (5525), 3819 states have internal predecessors, (5525), 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) [2022-01-11 00:52:12,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3820 states to 3820 states and 5525 transitions. [2022-01-11 00:52:12,007 INFO L78 Accepts]: Start accepts. Automaton has 3820 states and 5525 transitions. Word has length 94 [2022-01-11 00:52:12,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:52:12,007 INFO L470 AbstractCegarLoop]: Abstraction has 3820 states and 5525 transitions. [2022-01-11 00:52:12,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2022-01-11 00:52:12,007 INFO L276 IsEmpty]: Start isEmpty. Operand 3820 states and 5525 transitions. [2022-01-11 00:52:12,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-11 00:52:12,009 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:52:12,009 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:52:12,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 00:52:12,009 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:52:12,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:52:12,010 INFO L85 PathProgramCache]: Analyzing trace with hash 843132473, now seen corresponding path program 1 times [2022-01-11 00:52:12,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:52:12,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303272746] [2022-01-11 00:52:12,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:52:12,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:52:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:52:12,421 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:52:12,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:52:12,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303272746] [2022-01-11 00:52:12,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303272746] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:52:12,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629881447] [2022-01-11 00:52:12,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:52:12,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:52:12,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:52:12,423 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) [2022-01-11 00:52:12,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 00:52:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:52:12,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-11 00:52:12,917 INFO L286 TraceCheckSpWp]: Computing forward predicates...