/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label40+token_ring.04.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:32:53,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:32:53,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:32:53,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 13:32:53,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:32:53,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:32:53,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:32:53,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:32:53,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:32:53,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:32:53,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:32:53,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:32:53,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:32:53,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:32:53,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:32:53,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:32:53,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 13:32:53,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:32:53,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:32:53,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:32:53,823 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 13:32:53,859 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:32:53,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:32:53,859 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:32:53,860 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:32:53,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:32:53,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:32:53,861 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:32:53,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:32:53,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:32:53,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:32:53,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:32:53,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:32:53,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:32:53,863 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:32:53,863 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:32:53,863 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:32:53,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:32:53,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:32:53,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:32:53,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:32:53,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:32:53,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:32:53,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:32:53,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:32:53,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:32:53,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:32:53,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:32:53,864 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:32:53,865 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:32:53,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:32:53,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:32:53,865 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:32:53,866 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:32:53,866 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:32:54,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:32:54,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:32:54,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:32:54,131 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:32:54,132 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:32:54,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label40+token_ring.04.cil-1.c [2022-01-10 13:32:54,205 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97f0f9515/9ce31023d9d940bc870be1111a509067/FLAG22d187aa2 [2022-01-10 13:32:55,029 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:32:55,030 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.04.cil-1.c [2022-01-10 13:32:55,086 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97f0f9515/9ce31023d9d940bc870be1111a509067/FLAG22d187aa2 [2022-01-10 13:32:55,180 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97f0f9515/9ce31023d9d940bc870be1111a509067 [2022-01-10 13:32:55,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:32:55,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:32:55,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:32:55,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:32:55,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:32:55,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:32:55" (1/1) ... [2022-01-10 13:32:55,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6acb6316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:32:55, skipping insertion in model container [2022-01-10 13:32:55,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:32:55" (1/1) ... [2022-01-10 13:32:55,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:32:55,395 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:32:57,174 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.04.cil-1.c[377069,377082] [2022-01-10 13:32:57,206 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.04.cil-1.c[383339,383352] [2022-01-10 13:32:57,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:32:57,388 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:32:58,122 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.04.cil-1.c[377069,377082] [2022-01-10 13:32:58,131 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.04.cil-1.c[383339,383352] [2022-01-10 13:32:58,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:32:58,216 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:32:58,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:32:58 WrapperNode [2022-01-10 13:32:58,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:32:58,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:32:58,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:32:58,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:32:58,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:32:58" (1/1) ... [2022-01-10 13:32:58,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:32:58" (1/1) ... [2022-01-10 13:32:58,639 INFO L137 Inliner]: procedures = 53, calls = 53, calls flagged for inlining = 48, calls inlined = 87, statements flattened = 13397 [2022-01-10 13:32:58,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:32:58,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:32:58,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:32:58,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:32:58,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:32:58" (1/1) ... [2022-01-10 13:32:58,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:32:58" (1/1) ... [2022-01-10 13:32:58,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:32:58" (1/1) ... [2022-01-10 13:32:58,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:32:58" (1/1) ... [2022-01-10 13:32:58,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:32:58" (1/1) ... [2022-01-10 13:32:59,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:32:58" (1/1) ... [2022-01-10 13:32:59,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:32:58" (1/1) ... [2022-01-10 13:32:59,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:32:59,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:32:59,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:32:59,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:32:59,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:32:58" (1/1) ... [2022-01-10 13:32:59,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:32:59,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:32:59,285 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 13:32:59,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 13:32:59,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:32:59,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:32:59,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:32:59,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:32:59,472 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:32:59,473 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:33:07,752 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:33:07,782 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:33:07,783 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-10 13:33:07,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:33:07 BoogieIcfgContainer [2022-01-10 13:33:07,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:33:07,790 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:33:07,790 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:33:07,791 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:33:07,793 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:33:07" (1/1) ... [2022-01-10 13:33:09,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:33:09 BasicIcfg [2022-01-10 13:33:09,323 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:33:09,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:33:09,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:33:09,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:33:09,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:32:55" (1/4) ... [2022-01-10 13:33:09,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3358c896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:33:09, skipping insertion in model container [2022-01-10 13:33:09,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:32:58" (2/4) ... [2022-01-10 13:33:09,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3358c896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:33:09, skipping insertion in model container [2022-01-10 13:33:09,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:33:07" (3/4) ... [2022-01-10 13:33:09,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3358c896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:33:09, skipping insertion in model container [2022-01-10 13:33:09,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:33:09" (4/4) ... [2022-01-10 13:33:09,330 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label40+token_ring.04.cil-1.cTransformedIcfg [2022-01-10 13:33:09,334 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:33:09,334 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 13:33:09,386 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:33:09,392 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 13:33:09,392 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 13:33:09,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 2615 states, 2612 states have (on average 1.8162327718223583) internal successors, (4744), 2614 states have internal predecessors, (4744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:09,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:33:09,706 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:09,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:09,708 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:09,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:09,724 INFO L85 PathProgramCache]: Analyzing trace with hash -647753568, now seen corresponding path program 1 times [2022-01-10 13:33:09,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:09,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381240936] [2022-01-10 13:33:09,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:09,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:10,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:10,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:10,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381240936] [2022-01-10 13:33:10,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381240936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:10,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:10,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:10,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132706566] [2022-01-10 13:33:10,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:10,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:10,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:10,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:10,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:10,061 INFO L87 Difference]: Start difference. First operand has 2615 states, 2612 states have (on average 1.8162327718223583) internal successors, (4744), 2614 states have internal predecessors, (4744), 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 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:10,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:10,395 INFO L93 Difference]: Finished difference Result 5216 states and 9466 transitions. [2022-01-10 13:33:10,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:10,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 77 [2022-01-10 13:33:10,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:10,427 INFO L225 Difference]: With dead ends: 5216 [2022-01-10 13:33:10,427 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 13:33:10,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:10,441 INFO L933 BasicCegarLoop]: 4655 mSDtfsCounter, 4648 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4648 SdHoareTripleChecker+Valid, 4655 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:10,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4648 Valid, 4655 Invalid, 9 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:10,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 13:33:10,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 13:33:10,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.8040062843676354) internal successors, (4593), 2547 states have internal predecessors, (4593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:10,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4593 transitions. [2022-01-10 13:33:10,729 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4593 transitions. Word has length 77 [2022-01-10 13:33:10,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:10,730 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4593 transitions. [2022-01-10 13:33:10,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:10,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4593 transitions. [2022-01-10 13:33:10,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:33:10,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:10,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:10,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:33:10,737 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:10,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:10,739 INFO L85 PathProgramCache]: Analyzing trace with hash 656640161, now seen corresponding path program 1 times [2022-01-10 13:33:10,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:10,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290074359] [2022-01-10 13:33:10,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:10,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:10,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:10,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:10,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290074359] [2022-01-10 13:33:10,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290074359] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:10,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:10,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:10,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350341885] [2022-01-10 13:33:10,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:10,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:10,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:10,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:10,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:10,836 INFO L87 Difference]: Start difference. First operand 2548 states and 4593 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:10,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:10,905 INFO L93 Difference]: Finished difference Result 2962 states and 5208 transitions. [2022-01-10 13:33:10,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:10,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 77 [2022-01-10 13:33:10,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:10,917 INFO L225 Difference]: With dead ends: 2962 [2022-01-10 13:33:10,919 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 13:33:10,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:10,923 INFO L933 BasicCegarLoop]: 4583 mSDtfsCounter, 4575 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4575 SdHoareTripleChecker+Valid, 4583 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:10,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4575 Valid, 4583 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:10,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 13:33:10,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 13:33:10,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.8020424194815396) internal successors, (4588), 2547 states have internal predecessors, (4588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:10,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4588 transitions. [2022-01-10 13:33:10,998 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4588 transitions. Word has length 77 [2022-01-10 13:33:10,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:10,999 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4588 transitions. [2022-01-10 13:33:11,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:11,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4588 transitions. [2022-01-10 13:33:11,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:33:11,005 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:11,005 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:11,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:33:11,005 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:11,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:11,006 INFO L85 PathProgramCache]: Analyzing trace with hash -273275455, now seen corresponding path program 1 times [2022-01-10 13:33:11,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:11,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838648970] [2022-01-10 13:33:11,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:11,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:11,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:11,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:11,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838648970] [2022-01-10 13:33:11,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838648970] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:11,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:11,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:11,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377389608] [2022-01-10 13:33:11,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:11,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:11,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:11,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:11,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:11,097 INFO L87 Difference]: Start difference. First operand 2548 states and 4588 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:11,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:11,158 INFO L93 Difference]: Finished difference Result 2961 states and 5197 transitions. [2022-01-10 13:33:11,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:11,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 77 [2022-01-10 13:33:11,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:11,170 INFO L225 Difference]: With dead ends: 2961 [2022-01-10 13:33:11,170 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 13:33:11,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:11,178 INFO L933 BasicCegarLoop]: 4578 mSDtfsCounter, 4569 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4569 SdHoareTripleChecker+Valid, 4578 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:11,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4569 Valid, 4578 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:11,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 13:33:11,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 13:33:11,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.8000785545954439) internal successors, (4583), 2547 states have internal predecessors, (4583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:11,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4583 transitions. [2022-01-10 13:33:11,250 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4583 transitions. Word has length 77 [2022-01-10 13:33:11,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:11,252 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4583 transitions. [2022-01-10 13:33:11,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:11,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4583 transitions. [2022-01-10 13:33:11,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:33:11,254 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:11,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:11,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:33:11,255 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:11,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:11,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1774937249, now seen corresponding path program 1 times [2022-01-10 13:33:11,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:11,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92665012] [2022-01-10 13:33:11,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:11,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:11,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:11,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:11,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92665012] [2022-01-10 13:33:11,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92665012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:11,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:11,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:11,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373517850] [2022-01-10 13:33:11,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:11,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:11,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:11,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:11,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:11,340 INFO L87 Difference]: Start difference. First operand 2548 states and 4583 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:11,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:11,404 INFO L93 Difference]: Finished difference Result 2960 states and 5186 transitions. [2022-01-10 13:33:11,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:11,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 77 [2022-01-10 13:33:11,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:11,416 INFO L225 Difference]: With dead ends: 2960 [2022-01-10 13:33:11,416 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 13:33:11,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:11,428 INFO L933 BasicCegarLoop]: 4573 mSDtfsCounter, 4563 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4563 SdHoareTripleChecker+Valid, 4573 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:11,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4563 Valid, 4573 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:11,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 13:33:11,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 13:33:11,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.798114689709348) internal successors, (4578), 2547 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:11,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4578 transitions. [2022-01-10 13:33:11,501 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4578 transitions. Word has length 77 [2022-01-10 13:33:11,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:11,502 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4578 transitions. [2022-01-10 13:33:11,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:11,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4578 transitions. [2022-01-10 13:33:11,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:33:11,503 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:11,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:11,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:33:11,504 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:11,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:11,507 INFO L85 PathProgramCache]: Analyzing trace with hash 178440641, now seen corresponding path program 1 times [2022-01-10 13:33:11,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:11,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112818211] [2022-01-10 13:33:11,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:11,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:11,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:11,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:11,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112818211] [2022-01-10 13:33:11,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112818211] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:11,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:11,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:11,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462045007] [2022-01-10 13:33:11,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:11,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:11,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:11,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:11,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:11,567 INFO L87 Difference]: Start difference. First operand 2548 states and 4578 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:11,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:11,676 INFO L93 Difference]: Finished difference Result 2959 states and 5175 transitions. [2022-01-10 13:33:11,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:11,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 77 [2022-01-10 13:33:11,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:11,689 INFO L225 Difference]: With dead ends: 2959 [2022-01-10 13:33:11,689 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 13:33:11,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:11,692 INFO L933 BasicCegarLoop]: 4554 mSDtfsCounter, 4498 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4498 SdHoareTripleChecker+Valid, 4602 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:11,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4498 Valid, 4602 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:11,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 13:33:11,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 13:33:11,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.793401413982718) internal successors, (4566), 2547 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:11,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4566 transitions. [2022-01-10 13:33:11,760 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4566 transitions. Word has length 77 [2022-01-10 13:33:11,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:11,764 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4566 transitions. [2022-01-10 13:33:11,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:11,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4566 transitions. [2022-01-10 13:33:11,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:33:11,771 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:11,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:11,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:33:11,771 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:11,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:11,772 INFO L85 PathProgramCache]: Analyzing trace with hash 581156033, now seen corresponding path program 1 times [2022-01-10 13:33:11,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:11,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875751585] [2022-01-10 13:33:11,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:11,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:11,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:11,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:11,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875751585] [2022-01-10 13:33:11,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875751585] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:11,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:11,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:11,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708329536] [2022-01-10 13:33:11,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:11,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:11,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:11,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:11,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:11,832 INFO L87 Difference]: Start difference. First operand 2548 states and 4566 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:11,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:11,913 INFO L93 Difference]: Finished difference Result 2958 states and 5150 transitions. [2022-01-10 13:33:11,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:11,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 77 [2022-01-10 13:33:11,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:11,925 INFO L225 Difference]: With dead ends: 2958 [2022-01-10 13:33:11,925 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 13:33:11,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:11,929 INFO L933 BasicCegarLoop]: 4542 mSDtfsCounter, 4486 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4486 SdHoareTripleChecker+Valid, 4589 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:11,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4486 Valid, 4589 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:11,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 13:33:11,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 13:33:11,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.788688138256088) internal successors, (4554), 2547 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:12,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4554 transitions. [2022-01-10 13:33:12,006 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4554 transitions. Word has length 77 [2022-01-10 13:33:12,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:12,006 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4554 transitions. [2022-01-10 13:33:12,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:12,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4554 transitions. [2022-01-10 13:33:12,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:33:12,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:12,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:12,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:33:12,008 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:12,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:12,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1768998816, now seen corresponding path program 1 times [2022-01-10 13:33:12,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:12,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653863256] [2022-01-10 13:33:12,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:12,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:12,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:12,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:12,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653863256] [2022-01-10 13:33:12,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653863256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:12,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:12,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:12,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358043855] [2022-01-10 13:33:12,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:12,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:12,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:12,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:12,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:12,060 INFO L87 Difference]: Start difference. First operand 2548 states and 4554 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:12,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:12,136 INFO L93 Difference]: Finished difference Result 2956 states and 5123 transitions. [2022-01-10 13:33:12,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:12,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 77 [2022-01-10 13:33:12,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:12,148 INFO L225 Difference]: With dead ends: 2956 [2022-01-10 13:33:12,148 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 13:33:12,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:12,152 INFO L933 BasicCegarLoop]: 4530 mSDtfsCounter, 4473 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4473 SdHoareTripleChecker+Valid, 4576 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:12,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4473 Valid, 4576 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:12,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 13:33:12,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 13:33:12,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.783974862529458) internal successors, (4542), 2547 states have internal predecessors, (4542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:12,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4542 transitions. [2022-01-10 13:33:12,237 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4542 transitions. Word has length 77 [2022-01-10 13:33:12,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:12,238 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4542 transitions. [2022-01-10 13:33:12,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:12,239 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4542 transitions. [2022-01-10 13:33:12,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:33:12,240 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:12,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:12,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:33:12,240 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:12,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:12,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1127088383, now seen corresponding path program 1 times [2022-01-10 13:33:12,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:12,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315182760] [2022-01-10 13:33:12,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:12,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:12,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:12,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:12,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315182760] [2022-01-10 13:33:12,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315182760] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:12,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:12,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:12,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558048177] [2022-01-10 13:33:12,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:12,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:12,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:12,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:12,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:12,286 INFO L87 Difference]: Start difference. First operand 2548 states and 4542 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:12,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:12,366 INFO L93 Difference]: Finished difference Result 2955 states and 5098 transitions. [2022-01-10 13:33:12,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:12,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 77 [2022-01-10 13:33:12,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:12,378 INFO L225 Difference]: With dead ends: 2955 [2022-01-10 13:33:12,379 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 13:33:12,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:12,381 INFO L933 BasicCegarLoop]: 4518 mSDtfsCounter, 4461 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4461 SdHoareTripleChecker+Valid, 4563 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:12,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4461 Valid, 4563 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:12,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 13:33:12,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 13:33:12,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.7792615868028279) internal successors, (4530), 2547 states have internal predecessors, (4530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:12,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4530 transitions. [2022-01-10 13:33:12,498 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4530 transitions. Word has length 77 [2022-01-10 13:33:12,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:12,500 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4530 transitions. [2022-01-10 13:33:12,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:12,500 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4530 transitions. [2022-01-10 13:33:12,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:33:12,501 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:12,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:12,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 13:33:12,501 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:12,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:12,502 INFO L85 PathProgramCache]: Analyzing trace with hash 2130979199, now seen corresponding path program 1 times [2022-01-10 13:33:12,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:12,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40453720] [2022-01-10 13:33:12,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:12,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:12,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:12,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:12,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40453720] [2022-01-10 13:33:12,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40453720] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:12,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:12,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:33:12,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773195430] [2022-01-10 13:33:12,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:12,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:33:12,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:12,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:33:12,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:33:12,587 INFO L87 Difference]: Start difference. First operand 2548 states and 4530 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:12,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:12,800 INFO L93 Difference]: Finished difference Result 3162 states and 5362 transitions. [2022-01-10 13:33:12,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:33:12,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 77 [2022-01-10 13:33:12,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:12,828 INFO L225 Difference]: With dead ends: 3162 [2022-01-10 13:33:12,828 INFO L226 Difference]: Without dead ends: 2769 [2022-01-10 13:33:12,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 13:33:12,832 INFO L933 BasicCegarLoop]: 4564 mSDtfsCounter, 1458 mSDsluCounter, 12849 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 17413 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:12,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1458 Valid, 17413 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:33:12,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2022-01-10 13:33:12,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 2551. [2022-01-10 13:33:12,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2551 states, 2549 states have (on average 1.7755982738328757) internal successors, (4526), 2550 states have internal predecessors, (4526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:12,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2551 states to 2551 states and 4526 transitions. [2022-01-10 13:33:12,919 INFO L78 Accepts]: Start accepts. Automaton has 2551 states and 4526 transitions. Word has length 77 [2022-01-10 13:33:12,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:12,919 INFO L470 AbstractCegarLoop]: Abstraction has 2551 states and 4526 transitions. [2022-01-10 13:33:12,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:12,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2551 states and 4526 transitions. [2022-01-10 13:33:12,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:33:12,923 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:12,924 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:12,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 13:33:12,924 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:12,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:12,925 INFO L85 PathProgramCache]: Analyzing trace with hash 430238720, now seen corresponding path program 1 times [2022-01-10 13:33:12,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:12,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917204387] [2022-01-10 13:33:12,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:12,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:12,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:12,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:12,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917204387] [2022-01-10 13:33:12,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917204387] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:12,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:12,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:12,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736119806] [2022-01-10 13:33:12,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:12,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:12,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:12,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:12,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:12,977 INFO L87 Difference]: Start difference. First operand 2551 states and 4526 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:13,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:13,112 INFO L93 Difference]: Finished difference Result 3262 states and 5464 transitions. [2022-01-10 13:33:13,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:13,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 77 [2022-01-10 13:33:13,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:13,121 INFO L225 Difference]: With dead ends: 3262 [2022-01-10 13:33:13,122 INFO L226 Difference]: Without dead ends: 2868 [2022-01-10 13:33:13,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:13,125 INFO L933 BasicCegarLoop]: 4512 mSDtfsCounter, 4415 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4415 SdHoareTripleChecker+Valid, 4972 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:13,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4415 Valid, 4972 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:13,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2022-01-10 13:33:13,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 2864. [2022-01-10 13:33:13,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2864 states, 2862 states have (on average 1.7232704402515724) internal successors, (4932), 2863 states have internal predecessors, (4932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:13,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 4932 transitions. [2022-01-10 13:33:13,239 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 4932 transitions. Word has length 77 [2022-01-10 13:33:13,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:13,239 INFO L470 AbstractCegarLoop]: Abstraction has 2864 states and 4932 transitions. [2022-01-10 13:33:13,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:13,240 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 4932 transitions. [2022-01-10 13:33:13,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:33:13,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:13,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:13,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 13:33:13,241 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:13,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:13,242 INFO L85 PathProgramCache]: Analyzing trace with hash 229688575, now seen corresponding path program 1 times [2022-01-10 13:33:13,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:13,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670951443] [2022-01-10 13:33:13,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:13,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:13,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:13,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:13,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670951443] [2022-01-10 13:33:13,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670951443] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:13,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:13,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:13,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194449337] [2022-01-10 13:33:13,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:13,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:13,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:13,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:13,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:13,300 INFO L87 Difference]: Start difference. First operand 2864 states and 4932 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:13,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:13,462 INFO L93 Difference]: Finished difference Result 4200 states and 6687 transitions. [2022-01-10 13:33:13,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:13,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 77 [2022-01-10 13:33:13,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:13,473 INFO L225 Difference]: With dead ends: 4200 [2022-01-10 13:33:13,473 INFO L226 Difference]: Without dead ends: 3468 [2022-01-10 13:33:13,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:13,476 INFO L933 BasicCegarLoop]: 4514 mSDtfsCounter, 4415 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4415 SdHoareTripleChecker+Valid, 4986 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:13,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4415 Valid, 4986 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:13,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3468 states. [2022-01-10 13:33:13,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3468 to 3466. [2022-01-10 13:33:13,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3466 states, 3464 states have (on average 1.6521362586605082) internal successors, (5723), 3465 states have internal predecessors, (5723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:13,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3466 states to 3466 states and 5723 transitions. [2022-01-10 13:33:13,611 INFO L78 Accepts]: Start accepts. Automaton has 3466 states and 5723 transitions. Word has length 77 [2022-01-10 13:33:13,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:13,611 INFO L470 AbstractCegarLoop]: Abstraction has 3466 states and 5723 transitions. [2022-01-10 13:33:13,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:13,612 INFO L276 IsEmpty]: Start isEmpty. Operand 3466 states and 5723 transitions. [2022-01-10 13:33:13,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:33:13,612 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:13,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:13,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 13:33:13,613 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:13,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:13,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1847520768, now seen corresponding path program 1 times [2022-01-10 13:33:13,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:13,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391676275] [2022-01-10 13:33:13,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:13,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:13,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:13,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:13,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391676275] [2022-01-10 13:33:13,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391676275] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:13,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:13,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:13,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050793021] [2022-01-10 13:33:13,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:13,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:13,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:13,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:13,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:13,675 INFO L87 Difference]: Start difference. First operand 3466 states and 5723 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:13,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:13,813 INFO L93 Difference]: Finished difference Result 4793 states and 7464 transitions. [2022-01-10 13:33:13,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:13,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 77 [2022-01-10 13:33:13,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:13,824 INFO L225 Difference]: With dead ends: 4793 [2022-01-10 13:33:13,824 INFO L226 Difference]: Without dead ends: 3466 [2022-01-10 13:33:13,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:13,831 INFO L933 BasicCegarLoop]: 4496 mSDtfsCounter, 4401 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4401 SdHoareTripleChecker+Valid, 4539 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:13,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4401 Valid, 4539 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:13,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3466 states. [2022-01-10 13:33:13,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3466 to 3466. [2022-01-10 13:33:13,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3466 states, 3464 states have (on average 1.6449191685912241) internal successors, (5698), 3465 states have internal predecessors, (5698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:13,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3466 states to 3466 states and 5698 transitions. [2022-01-10 13:33:13,984 INFO L78 Accepts]: Start accepts. Automaton has 3466 states and 5698 transitions. Word has length 77 [2022-01-10 13:33:13,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:13,985 INFO L470 AbstractCegarLoop]: Abstraction has 3466 states and 5698 transitions. [2022-01-10 13:33:13,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:13,986 INFO L276 IsEmpty]: Start isEmpty. Operand 3466 states and 5698 transitions. [2022-01-10 13:33:13,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:33:13,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:13,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:13,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 13:33:13,987 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:13,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:13,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1450374175, now seen corresponding path program 1 times [2022-01-10 13:33:13,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:13,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047151056] [2022-01-10 13:33:13,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:13,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:14,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:14,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:14,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047151056] [2022-01-10 13:33:14,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047151056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:14,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:14,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:14,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068651386] [2022-01-10 13:33:14,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:14,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:14,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:14,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:14,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:14,045 INFO L87 Difference]: Start difference. First operand 3466 states and 5698 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:14,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:14,308 INFO L93 Difference]: Finished difference Result 6029 states and 9021 transitions. [2022-01-10 13:33:14,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:14,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 77 [2022-01-10 13:33:14,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:14,319 INFO L225 Difference]: With dead ends: 6029 [2022-01-10 13:33:14,320 INFO L226 Difference]: Without dead ends: 4706 [2022-01-10 13:33:14,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:14,323 INFO L933 BasicCegarLoop]: 4496 mSDtfsCounter, 4409 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4409 SdHoareTripleChecker+Valid, 4947 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:14,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4409 Valid, 4947 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:14,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4706 states. [2022-01-10 13:33:14,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4706 to 4560. [2022-01-10 13:33:14,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4560 states, 4558 states have (on average 1.556823168056165) internal successors, (7096), 4559 states have internal predecessors, (7096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:14,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 7096 transitions. [2022-01-10 13:33:14,535 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 7096 transitions. Word has length 77 [2022-01-10 13:33:14,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:14,535 INFO L470 AbstractCegarLoop]: Abstraction has 4560 states and 7096 transitions. [2022-01-10 13:33:14,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:14,536 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 7096 transitions. [2022-01-10 13:33:14,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 13:33:14,538 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:14,538 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:14,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 13:33:14,538 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:14,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:14,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1630624386, now seen corresponding path program 1 times [2022-01-10 13:33:14,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:14,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338665417] [2022-01-10 13:33:14,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:14,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:14,595 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:14,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:14,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338665417] [2022-01-10 13:33:14,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338665417] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:14,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:14,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:33:14,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757032935] [2022-01-10 13:33:14,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:14,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:14,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:14,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:14,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:14,597 INFO L87 Difference]: Start difference. First operand 4560 states and 7096 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:14,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:14,934 INFO L93 Difference]: Finished difference Result 9212 states and 13099 transitions. [2022-01-10 13:33:14,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:14,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 124 [2022-01-10 13:33:14,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:14,955 INFO L225 Difference]: With dead ends: 9212 [2022-01-10 13:33:14,955 INFO L226 Difference]: Without dead ends: 6801 [2022-01-10 13:33:14,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:14,963 INFO L933 BasicCegarLoop]: 4493 mSDtfsCounter, 4418 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4418 SdHoareTripleChecker+Valid, 4944 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:14,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4418 Valid, 4944 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:14,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6801 states. [2022-01-10 13:33:15,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6801 to 6571. [2022-01-10 13:33:15,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6571 states, 6569 states have (on average 1.472674684122393) internal successors, (9674), 6570 states have internal predecessors, (9674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:15,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6571 states to 6571 states and 9674 transitions. [2022-01-10 13:33:15,374 INFO L78 Accepts]: Start accepts. Automaton has 6571 states and 9674 transitions. Word has length 124 [2022-01-10 13:33:15,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:15,374 INFO L470 AbstractCegarLoop]: Abstraction has 6571 states and 9674 transitions. [2022-01-10 13:33:15,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:15,375 INFO L276 IsEmpty]: Start isEmpty. Operand 6571 states and 9674 transitions. [2022-01-10 13:33:15,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 13:33:15,378 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:15,378 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:15,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 13:33:15,378 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:15,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:15,379 INFO L85 PathProgramCache]: Analyzing trace with hash 549899582, now seen corresponding path program 1 times [2022-01-10 13:33:15,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:15,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109719127] [2022-01-10 13:33:15,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:15,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:15,445 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:15,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:15,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109719127] [2022-01-10 13:33:15,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109719127] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:15,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:15,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:33:15,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341353338] [2022-01-10 13:33:15,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:15,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:33:15,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:15,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:33:15,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:33:15,447 INFO L87 Difference]: Start difference. First operand 6571 states and 9674 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:16,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:16,116 INFO L93 Difference]: Finished difference Result 14833 states and 20425 transitions. [2022-01-10 13:33:16,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:33:16,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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 124 [2022-01-10 13:33:16,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:16,144 INFO L225 Difference]: With dead ends: 14833 [2022-01-10 13:33:16,144 INFO L226 Difference]: Without dead ends: 10435 [2022-01-10 13:33:16,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 13:33:16,158 INFO L933 BasicCegarLoop]: 4479 mSDtfsCounter, 1136 mSDsluCounter, 13259 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 17738 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:16,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1136 Valid, 17738 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:33:16,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10435 states. [2022-01-10 13:33:16,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10435 to 6619. [2022-01-10 13:33:16,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6619 states, 6617 states have (on average 1.4594226991083572) internal successors, (9657), 6618 states have internal predecessors, (9657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:16,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6619 states to 6619 states and 9657 transitions. [2022-01-10 13:33:16,541 INFO L78 Accepts]: Start accepts. Automaton has 6619 states and 9657 transitions. Word has length 124 [2022-01-10 13:33:16,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:16,541 INFO L470 AbstractCegarLoop]: Abstraction has 6619 states and 9657 transitions. [2022-01-10 13:33:16,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:16,541 INFO L276 IsEmpty]: Start isEmpty. Operand 6619 states and 9657 transitions. [2022-01-10 13:33:16,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 13:33:16,544 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:16,545 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:16,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 13:33:16,545 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:16,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:16,545 INFO L85 PathProgramCache]: Analyzing trace with hash 584686780, now seen corresponding path program 1 times [2022-01-10 13:33:16,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:16,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292555776] [2022-01-10 13:33:16,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:16,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:16,635 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:16,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:16,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292555776] [2022-01-10 13:33:16,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292555776] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:16,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:16,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:33:16,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4279612] [2022-01-10 13:33:16,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:16,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:16,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:16,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:16,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:16,638 INFO L87 Difference]: Start difference. First operand 6619 states and 9657 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:17,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:17,168 INFO L93 Difference]: Finished difference Result 15041 states and 20225 transitions. [2022-01-10 13:33:17,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:17,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 124 [2022-01-10 13:33:17,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:17,197 INFO L225 Difference]: With dead ends: 15041 [2022-01-10 13:33:17,197 INFO L226 Difference]: Without dead ends: 10607 [2022-01-10 13:33:17,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:17,212 INFO L933 BasicCegarLoop]: 4690 mSDtfsCounter, 4315 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4315 SdHoareTripleChecker+Valid, 5208 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:17,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4315 Valid, 5208 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:17,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10607 states. [2022-01-10 13:33:17,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10607 to 10605. [2022-01-10 13:33:17,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10605 states, 10603 states have (on average 1.3708384419503914) internal successors, (14535), 10604 states have internal predecessors, (14535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:17,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10605 states to 10605 states and 14535 transitions. [2022-01-10 13:33:17,874 INFO L78 Accepts]: Start accepts. Automaton has 10605 states and 14535 transitions. Word has length 124 [2022-01-10 13:33:17,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:17,874 INFO L470 AbstractCegarLoop]: Abstraction has 10605 states and 14535 transitions. [2022-01-10 13:33:17,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:17,874 INFO L276 IsEmpty]: Start isEmpty. Operand 10605 states and 14535 transitions. [2022-01-10 13:33:17,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 13:33:17,880 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:17,880 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:17,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 13:33:17,880 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:17,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:17,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1810932571, now seen corresponding path program 1 times [2022-01-10 13:33:17,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:17,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626546640] [2022-01-10 13:33:17,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:17,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:17,909 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 13:33:17,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:17,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626546640] [2022-01-10 13:33:17,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626546640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:17,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:17,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:33:17,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788150332] [2022-01-10 13:33:17,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:17,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:17,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:17,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:17,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:17,912 INFO L87 Difference]: Start difference. First operand 10605 states and 14535 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:18,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:18,485 INFO L93 Difference]: Finished difference Result 18967 states and 24972 transitions. [2022-01-10 13:33:18,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:18,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 124 [2022-01-10 13:33:18,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:18,513 INFO L225 Difference]: With dead ends: 18967 [2022-01-10 13:33:18,514 INFO L226 Difference]: Without dead ends: 10547 [2022-01-10 13:33:18,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:18,532 INFO L933 BasicCegarLoop]: 4494 mSDtfsCounter, 532 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 8452 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:18,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 8452 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:18,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10547 states. [2022-01-10 13:33:19,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10547 to 10547. [2022-01-10 13:33:19,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10547 states, 10545 states have (on average 1.3720246562351825) internal successors, (14468), 10546 states have internal predecessors, (14468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:19,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10547 states to 10547 states and 14468 transitions. [2022-01-10 13:33:19,172 INFO L78 Accepts]: Start accepts. Automaton has 10547 states and 14468 transitions. Word has length 124 [2022-01-10 13:33:19,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:19,172 INFO L470 AbstractCegarLoop]: Abstraction has 10547 states and 14468 transitions. [2022-01-10 13:33:19,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:19,173 INFO L276 IsEmpty]: Start isEmpty. Operand 10547 states and 14468 transitions. [2022-01-10 13:33:19,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 13:33:19,178 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:19,178 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:19,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 13:33:19,179 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:19,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:19,179 INFO L85 PathProgramCache]: Analyzing trace with hash -858880914, now seen corresponding path program 1 times [2022-01-10 13:33:19,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:19,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546528315] [2022-01-10 13:33:19,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:19,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:19,228 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:19,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:19,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546528315] [2022-01-10 13:33:19,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546528315] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:19,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:19,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:33:19,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952155111] [2022-01-10 13:33:19,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:19,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:19,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:19,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:19,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:19,231 INFO L87 Difference]: Start difference. First operand 10547 states and 14468 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:20,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:20,230 INFO L93 Difference]: Finished difference Result 26816 states and 34670 transitions. [2022-01-10 13:33:20,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:20,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 125 [2022-01-10 13:33:20,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:20,282 INFO L225 Difference]: With dead ends: 26816 [2022-01-10 13:33:20,283 INFO L226 Difference]: Without dead ends: 18454 [2022-01-10 13:33:20,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:20,304 INFO L933 BasicCegarLoop]: 4619 mSDtfsCounter, 4418 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4418 SdHoareTripleChecker+Valid, 5128 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:20,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4418 Valid, 5128 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:20,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18454 states. [2022-01-10 13:33:21,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18454 to 18164. [2022-01-10 13:33:21,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18164 states, 18162 states have (on average 1.3104283669199428) internal successors, (23800), 18163 states have internal predecessors, (23800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:21,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18164 states to 18164 states and 23800 transitions. [2022-01-10 13:33:21,089 INFO L78 Accepts]: Start accepts. Automaton has 18164 states and 23800 transitions. Word has length 125 [2022-01-10 13:33:21,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:21,089 INFO L470 AbstractCegarLoop]: Abstraction has 18164 states and 23800 transitions. [2022-01-10 13:33:21,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:21,090 INFO L276 IsEmpty]: Start isEmpty. Operand 18164 states and 23800 transitions. [2022-01-10 13:33:21,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 13:33:21,105 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:21,105 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:21,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 13:33:21,105 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:21,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:21,106 INFO L85 PathProgramCache]: Analyzing trace with hash 38033487, now seen corresponding path program 1 times [2022-01-10 13:33:21,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:21,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705435421] [2022-01-10 13:33:21,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:21,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:21,136 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 13:33:21,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:21,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705435421] [2022-01-10 13:33:21,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705435421] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:21,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:21,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:33:21,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826144460] [2022-01-10 13:33:21,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:21,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:21,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:21,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:21,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:21,139 INFO L87 Difference]: Start difference. First operand 18164 states and 23800 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:21,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:21,975 INFO L93 Difference]: Finished difference Result 30318 states and 38834 transitions. [2022-01-10 13:33:21,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:21,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 125 [2022-01-10 13:33:21,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:22,020 INFO L225 Difference]: With dead ends: 30318 [2022-01-10 13:33:22,020 INFO L226 Difference]: Without dead ends: 14313 [2022-01-10 13:33:22,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:22,046 INFO L933 BasicCegarLoop]: 4493 mSDtfsCounter, 530 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 8451 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:22,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 8451 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:22,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14313 states. [2022-01-10 13:33:22,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14313 to 14313. [2022-01-10 13:33:22,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14313 states, 14311 states have (on average 1.3300957305569143) internal successors, (19035), 14312 states have internal predecessors, (19035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:22,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14313 states to 14313 states and 19035 transitions. [2022-01-10 13:33:22,669 INFO L78 Accepts]: Start accepts. Automaton has 14313 states and 19035 transitions. Word has length 125 [2022-01-10 13:33:22,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:22,669 INFO L470 AbstractCegarLoop]: Abstraction has 14313 states and 19035 transitions. [2022-01-10 13:33:22,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:22,669 INFO L276 IsEmpty]: Start isEmpty. Operand 14313 states and 19035 transitions. [2022-01-10 13:33:22,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 13:33:22,675 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:22,675 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:22,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 13:33:22,676 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:22,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:22,676 INFO L85 PathProgramCache]: Analyzing trace with hash 601273385, now seen corresponding path program 1 times [2022-01-10 13:33:22,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:22,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897418353] [2022-01-10 13:33:22,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:22,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:22,718 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:22,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:22,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897418353] [2022-01-10 13:33:22,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897418353] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:22,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:22,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:33:22,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016950196] [2022-01-10 13:33:22,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:22,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:22,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:22,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:22,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:22,720 INFO L87 Difference]: Start difference. First operand 14313 states and 19035 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:23,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:23,784 INFO L93 Difference]: Finished difference Result 37129 states and 47171 transitions. [2022-01-10 13:33:23,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:23,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 126 [2022-01-10 13:33:23,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:23,852 INFO L225 Difference]: With dead ends: 37129 [2022-01-10 13:33:23,852 INFO L226 Difference]: Without dead ends: 25001 [2022-01-10 13:33:23,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:23,878 INFO L933 BasicCegarLoop]: 4641 mSDtfsCounter, 4418 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4418 SdHoareTripleChecker+Valid, 5148 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:23,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4418 Valid, 5148 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:23,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25001 states. [2022-01-10 13:33:25,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25001 to 24327. [2022-01-10 13:33:25,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24327 states, 24325 states have (on average 1.2857965056526208) internal successors, (31277), 24326 states have internal predecessors, (31277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:25,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24327 states to 24327 states and 31277 transitions. [2022-01-10 13:33:25,069 INFO L78 Accepts]: Start accepts. Automaton has 24327 states and 31277 transitions. Word has length 126 [2022-01-10 13:33:25,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:25,070 INFO L470 AbstractCegarLoop]: Abstraction has 24327 states and 31277 transitions. [2022-01-10 13:33:25,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:25,070 INFO L276 IsEmpty]: Start isEmpty. Operand 24327 states and 31277 transitions. [2022-01-10 13:33:25,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 13:33:25,081 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:25,082 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:25,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 13:33:25,082 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:25,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:25,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1938805690, now seen corresponding path program 1 times [2022-01-10 13:33:25,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:25,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965994430] [2022-01-10 13:33:25,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:25,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:25,120 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 13:33:25,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:25,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965994430] [2022-01-10 13:33:25,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965994430] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:25,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:25,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:33:25,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12138846] [2022-01-10 13:33:25,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:25,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:25,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:25,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:25,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:25,122 INFO L87 Difference]: Start difference. First operand 24327 states and 31277 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:26,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:26,136 INFO L93 Difference]: Finished difference Result 46432 states and 58482 transitions. [2022-01-10 13:33:26,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:26,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 126 [2022-01-10 13:33:26,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:26,191 INFO L225 Difference]: With dead ends: 46432 [2022-01-10 13:33:26,191 INFO L226 Difference]: Without dead ends: 24271 [2022-01-10 13:33:26,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:26,223 INFO L933 BasicCegarLoop]: 4492 mSDtfsCounter, 528 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 8450 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:26,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [528 Valid, 8450 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:26,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24271 states. [2022-01-10 13:33:27,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24271 to 24271. [2022-01-10 13:33:27,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24271 states, 24269 states have (on average 1.2861675388355516) internal successors, (31214), 24270 states have internal predecessors, (31214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:27,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24271 states to 24271 states and 31214 transitions. [2022-01-10 13:33:27,413 INFO L78 Accepts]: Start accepts. Automaton has 24271 states and 31214 transitions. Word has length 126 [2022-01-10 13:33:27,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:27,413 INFO L470 AbstractCegarLoop]: Abstraction has 24271 states and 31214 transitions. [2022-01-10 13:33:27,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:27,413 INFO L276 IsEmpty]: Start isEmpty. Operand 24271 states and 31214 transitions. [2022-01-10 13:33:27,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 13:33:27,421 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:27,422 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:27,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 13:33:27,422 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:27,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:27,423 INFO L85 PathProgramCache]: Analyzing trace with hash -386128003, now seen corresponding path program 1 times [2022-01-10 13:33:27,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:27,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636357598] [2022-01-10 13:33:27,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:27,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:27,472 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:27,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:27,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636357598] [2022-01-10 13:33:27,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636357598] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:27,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:27,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:33:27,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863057859] [2022-01-10 13:33:27,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:27,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:27,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:27,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:27,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:27,474 INFO L87 Difference]: Start difference. First operand 24271 states and 31214 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:29,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:29,311 INFO L93 Difference]: Finished difference Result 64498 states and 80668 transitions. [2022-01-10 13:33:29,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:29,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 127 [2022-01-10 13:33:29,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:29,396 INFO L225 Difference]: With dead ends: 64498 [2022-01-10 13:33:29,396 INFO L226 Difference]: Without dead ends: 42412 [2022-01-10 13:33:29,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:29,443 INFO L933 BasicCegarLoop]: 4632 mSDtfsCounter, 4324 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4324 SdHoareTripleChecker+Valid, 5144 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:29,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4324 Valid, 5144 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:29,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42412 states. [2022-01-10 13:33:31,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42412 to 42410. [2022-01-10 13:33:31,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42410 states, 42408 states have (on average 1.2583003206942087) internal successors, (53362), 42409 states have internal predecessors, (53362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:31,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42410 states to 42410 states and 53362 transitions. [2022-01-10 13:33:31,857 INFO L78 Accepts]: Start accepts. Automaton has 42410 states and 53362 transitions. Word has length 127 [2022-01-10 13:33:31,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:31,857 INFO L470 AbstractCegarLoop]: Abstraction has 42410 states and 53362 transitions. [2022-01-10 13:33:31,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:31,858 INFO L276 IsEmpty]: Start isEmpty. Operand 42410 states and 53362 transitions. [2022-01-10 13:33:31,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 13:33:31,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:31,873 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:31,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 13:33:31,874 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:31,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:31,874 INFO L85 PathProgramCache]: Analyzing trace with hash 840117788, now seen corresponding path program 1 times [2022-01-10 13:33:31,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:31,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106829090] [2022-01-10 13:33:31,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:31,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:31,905 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 13:33:31,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:31,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106829090] [2022-01-10 13:33:31,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106829090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:31,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:31,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:33:31,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916509888] [2022-01-10 13:33:31,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:31,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:31,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:31,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:31,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:31,907 INFO L87 Difference]: Start difference. First operand 42410 states and 53362 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:33,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:33,914 INFO L93 Difference]: Finished difference Result 82580 states and 102635 transitions. [2022-01-10 13:33:33,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:33,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 127 [2022-01-10 13:33:33,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:34,081 INFO L225 Difference]: With dead ends: 82580 [2022-01-10 13:33:34,081 INFO L226 Difference]: Without dead ends: 42355 [2022-01-10 13:33:34,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:34,138 INFO L933 BasicCegarLoop]: 4491 mSDtfsCounter, 526 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 8449 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:34,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 8449 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:34,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42355 states. [2022-01-10 13:33:36,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42355 to 42355. [2022-01-10 13:33:36,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42355 states, 42353 states have (on average 1.2584940854248814) internal successors, (53301), 42354 states have internal predecessors, (53301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:36,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42355 states to 42355 states and 53301 transitions. [2022-01-10 13:33:36,473 INFO L78 Accepts]: Start accepts. Automaton has 42355 states and 53301 transitions. Word has length 127 [2022-01-10 13:33:36,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:36,473 INFO L470 AbstractCegarLoop]: Abstraction has 42355 states and 53301 transitions. [2022-01-10 13:33:36,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:36,473 INFO L276 IsEmpty]: Start isEmpty. Operand 42355 states and 53301 transitions. [2022-01-10 13:33:36,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 13:33:36,483 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:36,484 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:36,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 13:33:36,484 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:36,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:36,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1501899619, now seen corresponding path program 1 times [2022-01-10 13:33:36,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:36,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186090807] [2022-01-10 13:33:36,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:36,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:36,546 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:36,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:36,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186090807] [2022-01-10 13:33:36,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186090807] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:36,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:36,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:33:36,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976889200] [2022-01-10 13:33:36,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:36,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:36,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:36,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:36,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:36,548 INFO L87 Difference]: Start difference. First operand 42355 states and 53301 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:40,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:40,544 INFO L93 Difference]: Finished difference Result 118080 states and 145974 transitions. [2022-01-10 13:33:40,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:40,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 128 [2022-01-10 13:33:40,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:40,663 INFO L225 Difference]: With dead ends: 118080 [2022-01-10 13:33:40,663 INFO L226 Difference]: Without dead ends: 77910 [2022-01-10 13:33:40,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:40,711 INFO L933 BasicCegarLoop]: 4943 mSDtfsCounter, 449 mSDsluCounter, 4470 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 9413 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:40,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 9413 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:40,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77910 states. [2022-01-10 13:33:44,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77910 to 77910. [2022-01-10 13:33:44,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77910 states, 77908 states have (on average 1.2313626328490015) internal successors, (95933), 77909 states have internal predecessors, (95933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:44,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77910 states to 77910 states and 95933 transitions. [2022-01-10 13:33:44,913 INFO L78 Accepts]: Start accepts. Automaton has 77910 states and 95933 transitions. Word has length 128 [2022-01-10 13:33:44,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:44,914 INFO L470 AbstractCegarLoop]: Abstraction has 77910 states and 95933 transitions. [2022-01-10 13:33:44,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:44,914 INFO L276 IsEmpty]: Start isEmpty. Operand 77910 states and 95933 transitions. [2022-01-10 13:33:44,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 13:33:44,960 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:44,960 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:44,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 13:33:44,960 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:44,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:44,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1562361697, now seen corresponding path program 1 times [2022-01-10 13:33:44,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:44,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163510979] [2022-01-10 13:33:44,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:44,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:45,012 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:45,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:45,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163510979] [2022-01-10 13:33:45,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163510979] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:45,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:45,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:45,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99163277] [2022-01-10 13:33:45,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:45,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:45,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:45,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:45,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:45,014 INFO L87 Difference]: Start difference. First operand 77910 states and 95933 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 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)