/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:09:08,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:09:08,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:09:08,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 01:09:08,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 01:09:08,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 01:09:08,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 01:09:08,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 01:09:08,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 01:09:08,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 01:09:08,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 01:09:08,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 01:09:08,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 01:09:08,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 01:09:08,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 01:09:08,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 01:09:08,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 01:09:08,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 01:09:08,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 01:09:08,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 01:09:08,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 01:09:08,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 01:09:08,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 01:09:08,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 01:09:08,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 01:09:08,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:09:08,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:09:08,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:09:08,201 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 01:09:08,213 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:09:08,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:09:08,213 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:09:08,214 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:09:08,214 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:09:08,214 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:09:08,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:09:08,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:09:08,215 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:09:08,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:09:08,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:09:08,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:09:08,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:09:08,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:09:08,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:09:08,215 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:09:08,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:09:08,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:09:08,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:09:08,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:09:08,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:09:08,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:09:08,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:09:08,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:09:08,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:09:08,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:09:08,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:09:08,216 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:09:08,217 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:09:08,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:09:08,217 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:09:08,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:09:08,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:09:08,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:09:08,401 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:09:08,402 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:09:08,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2022-01-10 01:09:08,444 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bae6209b0/a47fa5ebfca747d0911977ce678999ab/FLAGce90df195 [2022-01-10 01:09:08,757 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:09:08,757 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2022-01-10 01:09:08,763 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bae6209b0/a47fa5ebfca747d0911977ce678999ab/FLAGce90df195 [2022-01-10 01:09:09,177 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bae6209b0/a47fa5ebfca747d0911977ce678999ab [2022-01-10 01:09:09,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:09:09,180 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:09:09,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:09:09,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:09:09,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:09:09,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:09:09" (1/1) ... [2022-01-10 01:09:09,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@382449e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:09, skipping insertion in model container [2022-01-10 01:09:09,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:09:09" (1/1) ... [2022-01-10 01:09:09,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:09:09,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:09:09,380 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c[14680,14693] [2022-01-10 01:09:09,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:09:09,387 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:09:09,429 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c[14680,14693] [2022-01-10 01:09:09,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:09:09,443 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:09:09,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:09 WrapperNode [2022-01-10 01:09:09,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:09:09,444 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:09:09,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:09:09,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:09:09,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:09" (1/1) ... [2022-01-10 01:09:09,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:09" (1/1) ... [2022-01-10 01:09:09,493 INFO L137 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 535 [2022-01-10 01:09:09,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:09:09,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:09:09,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:09:09,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:09:09,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:09" (1/1) ... [2022-01-10 01:09:09,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:09" (1/1) ... [2022-01-10 01:09:09,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:09" (1/1) ... [2022-01-10 01:09:09,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:09" (1/1) ... [2022-01-10 01:09:09,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:09" (1/1) ... [2022-01-10 01:09:09,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:09" (1/1) ... [2022-01-10 01:09:09,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:09" (1/1) ... [2022-01-10 01:09:09,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:09:09,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:09:09,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:09:09,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:09:09,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:09" (1/1) ... [2022-01-10 01:09:09,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:09:09,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:09:09,566 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 01:09:09,567 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 01:09:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2022-01-10 01:09:09,588 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2022-01-10 01:09:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:09:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2022-01-10 01:09:09,588 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2022-01-10 01:09:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-01-10 01:09:09,588 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-01-10 01:09:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2022-01-10 01:09:09,588 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2022-01-10 01:09:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-10 01:09:09,589 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-10 01:09:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:09:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2022-01-10 01:09:09,589 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2022-01-10 01:09:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:09:09,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:09:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2022-01-10 01:09:09,589 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2022-01-10 01:09:09,693 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:09:09,694 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:09:10,031 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:09:10,037 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:09:10,037 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 01:09:10,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:09:10 BoogieIcfgContainer [2022-01-10 01:09:10,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:09:10,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:09:10,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:09:10,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:09:10,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:09:09" (1/3) ... [2022-01-10 01:09:10,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4666fa8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:09:10, skipping insertion in model container [2022-01-10 01:09:10,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:09" (2/3) ... [2022-01-10 01:09:10,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4666fa8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:09:10, skipping insertion in model container [2022-01-10 01:09:10,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:09:10" (3/3) ... [2022-01-10 01:09:10,047 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2022-01-10 01:09:10,051 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:09:10,051 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 01:09:10,083 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:09:10,087 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 01:09:10,088 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 01:09:10,101 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 166 states have (on average 1.5542168674698795) internal successors, (258), 168 states have internal predecessors, (258), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-10 01:09:10,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 01:09:10,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:10,107 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] [2022-01-10 01:09:10,107 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:10,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:10,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1527920627, now seen corresponding path program 1 times [2022-01-10 01:09:10,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:10,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524959968] [2022-01-10 01:09:10,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:10,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:10,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 01:09:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:10,285 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 01:09:10,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:10,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524959968] [2022-01-10 01:09:10,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524959968] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:10,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:10,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 01:09:10,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7664394] [2022-01-10 01:09:10,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:10,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 01:09:10,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:10,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 01:09:10,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 01:09:10,313 INFO L87 Difference]: Start difference. First operand has 206 states, 166 states have (on average 1.5542168674698795) internal successors, (258), 168 states have internal predecessors, (258), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 01:09:10,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:10,363 INFO L93 Difference]: Finished difference Result 392 states and 637 transitions. [2022-01-10 01:09:10,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 01:09:10,366 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-01-10 01:09:10,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:10,372 INFO L225 Difference]: With dead ends: 392 [2022-01-10 01:09:10,372 INFO L226 Difference]: Without dead ends: 202 [2022-01-10 01:09:10,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 01:09:10,382 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:10,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:10,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-01-10 01:09:10,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2022-01-10 01:09:10,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 163 states have (on average 1.5030674846625767) internal successors, (245), 164 states have internal predecessors, (245), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-10 01:09:10,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 307 transitions. [2022-01-10 01:09:10,429 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 307 transitions. Word has length 44 [2022-01-10 01:09:10,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:10,430 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 307 transitions. [2022-01-10 01:09:10,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 01:09:10,430 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 307 transitions. [2022-01-10 01:09:10,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 01:09:10,434 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:10,434 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] [2022-01-10 01:09:10,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:09:10,436 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:10,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:10,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1536686131, now seen corresponding path program 1 times [2022-01-10 01:09:10,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:10,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316519818] [2022-01-10 01:09:10,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:10,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:10,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 01:09:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:10,555 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 01:09:10,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:10,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316519818] [2022-01-10 01:09:10,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316519818] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:10,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:10,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:09:10,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631965361] [2022-01-10 01:09:10,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:10,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:09:10,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:10,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:09:10,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:09:10,559 INFO L87 Difference]: Start difference. First operand 202 states and 307 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 01:09:10,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:10,629 INFO L93 Difference]: Finished difference Result 390 states and 588 transitions. [2022-01-10 01:09:10,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:09:10,632 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-01-10 01:09:10,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:10,633 INFO L225 Difference]: With dead ends: 390 [2022-01-10 01:09:10,634 INFO L226 Difference]: Without dead ends: 202 [2022-01-10 01:09:10,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:09:10,636 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 171 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:10,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 1298 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:10,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-01-10 01:09:10,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2022-01-10 01:09:10,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 163 states have (on average 1.4294478527607362) internal successors, (233), 164 states have internal predecessors, (233), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-10 01:09:10,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 295 transitions. [2022-01-10 01:09:10,654 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 295 transitions. Word has length 44 [2022-01-10 01:09:10,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:10,655 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 295 transitions. [2022-01-10 01:09:10,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 01:09:10,655 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 295 transitions. [2022-01-10 01:09:10,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 01:09:10,656 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:10,656 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] [2022-01-10 01:09:10,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:09:10,656 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:10,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:10,657 INFO L85 PathProgramCache]: Analyzing trace with hash 2082780786, now seen corresponding path program 1 times [2022-01-10 01:09:10,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:10,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094954673] [2022-01-10 01:09:10,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:10,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:10,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:10,834 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 01:09:10,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:10,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094954673] [2022-01-10 01:09:10,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094954673] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:10,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:10,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:09:10,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071006953] [2022-01-10 01:09:10,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:10,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:09:10,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:10,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:09:10,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:09:10,837 INFO L87 Difference]: Start difference. First operand 202 states and 295 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 01:09:10,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:10,883 INFO L93 Difference]: Finished difference Result 391 states and 580 transitions. [2022-01-10 01:09:10,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:09:10,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-01-10 01:09:10,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:10,887 INFO L225 Difference]: With dead ends: 391 [2022-01-10 01:09:10,887 INFO L226 Difference]: Without dead ends: 206 [2022-01-10 01:09:10,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:10,896 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 5 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:10,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 857 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:10,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-01-10 01:09:10,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2022-01-10 01:09:10,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 166 states have (on average 1.4216867469879517) internal successors, (236), 167 states have internal predecessors, (236), 31 states have call successors, (31), 8 states have call predecessors, (31), 8 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-10 01:09:10,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 298 transitions. [2022-01-10 01:09:10,914 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 298 transitions. Word has length 55 [2022-01-10 01:09:10,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:10,914 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 298 transitions. [2022-01-10 01:09:10,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 01:09:10,914 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 298 transitions. [2022-01-10 01:09:10,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 01:09:10,916 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:10,916 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:09:10,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:09:10,916 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:10,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:10,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1990587108, now seen corresponding path program 1 times [2022-01-10 01:09:10,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:10,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128436442] [2022-01-10 01:09:10,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:10,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:10,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:11,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:11,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-10 01:09:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:11,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:09:11,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:11,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128436442] [2022-01-10 01:09:11,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128436442] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:11,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:11,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:09:11,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521520997] [2022-01-10 01:09:11,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:11,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:09:11,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:11,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:09:11,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:09:11,019 INFO L87 Difference]: Start difference. First operand 206 states and 298 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 01:09:11,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:11,053 INFO L93 Difference]: Finished difference Result 561 states and 823 transitions. [2022-01-10 01:09:11,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:09:11,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 71 [2022-01-10 01:09:11,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:11,057 INFO L225 Difference]: With dead ends: 561 [2022-01-10 01:09:11,057 INFO L226 Difference]: Without dead ends: 372 [2022-01-10 01:09:11,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 01:09:11,067 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 226 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:11,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 620 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:11,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-01-10 01:09:11,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 363. [2022-01-10 01:09:11,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 286 states have (on average 1.4405594405594406) internal successors, (412), 288 states have internal predecessors, (412), 60 states have call successors, (60), 16 states have call predecessors, (60), 16 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2022-01-10 01:09:11,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 532 transitions. [2022-01-10 01:09:11,108 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 532 transitions. Word has length 71 [2022-01-10 01:09:11,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:11,108 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 532 transitions. [2022-01-10 01:09:11,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 01:09:11,108 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 532 transitions. [2022-01-10 01:09:11,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 01:09:11,110 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:11,110 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:09:11,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 01:09:11,110 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:11,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:11,111 INFO L85 PathProgramCache]: Analyzing trace with hash 687571372, now seen corresponding path program 1 times [2022-01-10 01:09:11,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:11,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057434574] [2022-01-10 01:09:11,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:11,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:11,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:11,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:11,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-10 01:09:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:11,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:09:11,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:11,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057434574] [2022-01-10 01:09:11,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057434574] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:11,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:11,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:09:11,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365179196] [2022-01-10 01:09:11,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:11,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:09:11,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:11,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:09:11,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:09:11,211 INFO L87 Difference]: Start difference. First operand 363 states and 532 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 01:09:11,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:11,262 INFO L93 Difference]: Finished difference Result 1006 states and 1489 transitions. [2022-01-10 01:09:11,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:09:11,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 72 [2022-01-10 01:09:11,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:11,271 INFO L225 Difference]: With dead ends: 1006 [2022-01-10 01:09:11,271 INFO L226 Difference]: Without dead ends: 660 [2022-01-10 01:09:11,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 01:09:11,273 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 234 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:11,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 655 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:11,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2022-01-10 01:09:11,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 643. [2022-01-10 01:09:11,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 494 states have (on average 1.459514170040486) internal successors, (721), 498 states have internal predecessors, (721), 117 states have call successors, (117), 31 states have call predecessors, (117), 31 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-01-10 01:09:11,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 955 transitions. [2022-01-10 01:09:11,318 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 955 transitions. Word has length 72 [2022-01-10 01:09:11,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:11,319 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 955 transitions. [2022-01-10 01:09:11,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 01:09:11,319 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 955 transitions. [2022-01-10 01:09:11,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 01:09:11,325 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:11,325 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:09:11,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 01:09:11,325 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:11,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:11,326 INFO L85 PathProgramCache]: Analyzing trace with hash -592292306, now seen corresponding path program 1 times [2022-01-10 01:09:11,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:11,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061733022] [2022-01-10 01:09:11,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:11,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:11,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:11,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:11,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-10 01:09:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:11,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:09:11,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:11,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061733022] [2022-01-10 01:09:11,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061733022] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:11,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:11,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:09:11,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078533641] [2022-01-10 01:09:11,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:11,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:09:11,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:11,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:09:11,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:11,432 INFO L87 Difference]: Start difference. First operand 643 states and 955 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 01:09:11,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:11,728 INFO L93 Difference]: Finished difference Result 1799 states and 2717 transitions. [2022-01-10 01:09:11,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:09:11,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 72 [2022-01-10 01:09:11,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:11,735 INFO L225 Difference]: With dead ends: 1799 [2022-01-10 01:09:11,735 INFO L226 Difference]: Without dead ends: 1173 [2022-01-10 01:09:11,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:09:11,739 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 783 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:11,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [783 Valid, 775 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:09:11,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2022-01-10 01:09:11,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 768. [2022-01-10 01:09:11,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 606 states have (on average 1.4372937293729373) internal successors, (871), 609 states have internal predecessors, (871), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-01-10 01:09:11,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1119 transitions. [2022-01-10 01:09:11,790 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1119 transitions. Word has length 72 [2022-01-10 01:09:11,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:11,790 INFO L470 AbstractCegarLoop]: Abstraction has 768 states and 1119 transitions. [2022-01-10 01:09:11,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 01:09:11,791 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1119 transitions. [2022-01-10 01:09:11,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 01:09:11,817 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:11,817 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:09:11,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 01:09:11,817 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:11,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:11,818 INFO L85 PathProgramCache]: Analyzing trace with hash 9157699, now seen corresponding path program 1 times [2022-01-10 01:09:11,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:11,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001336176] [2022-01-10 01:09:11,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:11,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:11,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:11,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:11,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-10 01:09:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:11,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:09:11,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:11,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001336176] [2022-01-10 01:09:11,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001336176] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:11,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:11,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:09:11,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633873547] [2022-01-10 01:09:11,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:11,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:09:11,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:11,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:09:11,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:11,893 INFO L87 Difference]: Start difference. First operand 768 states and 1119 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 01:09:12,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:12,122 INFO L93 Difference]: Finished difference Result 1803 states and 2717 transitions. [2022-01-10 01:09:12,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:09:12,123 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 73 [2022-01-10 01:09:12,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:12,128 INFO L225 Difference]: With dead ends: 1803 [2022-01-10 01:09:12,128 INFO L226 Difference]: Without dead ends: 1177 [2022-01-10 01:09:12,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:09:12,131 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 780 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:12,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [780 Valid, 777 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:09:12,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2022-01-10 01:09:12,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 776. [2022-01-10 01:09:12,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 614 states have (on average 1.4315960912052117) internal successors, (879), 617 states have internal predecessors, (879), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-01-10 01:09:12,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1127 transitions. [2022-01-10 01:09:12,176 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1127 transitions. Word has length 73 [2022-01-10 01:09:12,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:12,177 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 1127 transitions. [2022-01-10 01:09:12,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 01:09:12,177 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1127 transitions. [2022-01-10 01:09:12,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 01:09:12,178 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:12,178 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:09:12,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 01:09:12,178 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:12,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:12,181 INFO L85 PathProgramCache]: Analyzing trace with hash 341297525, now seen corresponding path program 1 times [2022-01-10 01:09:12,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:12,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738642863] [2022-01-10 01:09:12,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:12,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-10 01:09:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:09:12,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:12,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738642863] [2022-01-10 01:09:12,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738642863] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:12,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:12,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:09:12,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205174637] [2022-01-10 01:09:12,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:12,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:09:12,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:12,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:09:12,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:09:12,247 INFO L87 Difference]: Start difference. First operand 776 states and 1127 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 01:09:12,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:12,478 INFO L93 Difference]: Finished difference Result 1803 states and 2709 transitions. [2022-01-10 01:09:12,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:09:12,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 75 [2022-01-10 01:09:12,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:12,483 INFO L225 Difference]: With dead ends: 1803 [2022-01-10 01:09:12,483 INFO L226 Difference]: Without dead ends: 1177 [2022-01-10 01:09:12,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:12,485 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 237 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:12,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 744 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:09:12,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2022-01-10 01:09:12,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 776. [2022-01-10 01:09:12,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 614 states have (on average 1.4250814332247557) internal successors, (875), 617 states have internal predecessors, (875), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-01-10 01:09:12,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1123 transitions. [2022-01-10 01:09:12,529 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1123 transitions. Word has length 75 [2022-01-10 01:09:12,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:12,529 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 1123 transitions. [2022-01-10 01:09:12,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 01:09:12,530 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1123 transitions. [2022-01-10 01:09:12,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 01:09:12,530 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:12,530 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:09:12,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 01:09:12,531 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:12,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:12,531 INFO L85 PathProgramCache]: Analyzing trace with hash 662931196, now seen corresponding path program 1 times [2022-01-10 01:09:12,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:12,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763082494] [2022-01-10 01:09:12,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:12,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:09:12,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:12,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763082494] [2022-01-10 01:09:12,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763082494] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:12,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:12,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:09:12,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338412170] [2022-01-10 01:09:12,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:12,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:09:12,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:12,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:09:12,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:09:12,605 INFO L87 Difference]: Start difference. First operand 776 states and 1123 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 01:09:12,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:12,650 INFO L93 Difference]: Finished difference Result 1422 states and 2088 transitions. [2022-01-10 01:09:12,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:09:12,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2022-01-10 01:09:12,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:12,653 INFO L225 Difference]: With dead ends: 1422 [2022-01-10 01:09:12,653 INFO L226 Difference]: Without dead ends: 796 [2022-01-10 01:09:12,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:12,655 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 6 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:12,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 869 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:12,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-01-10 01:09:12,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 796. [2022-01-10 01:09:12,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 630 states have (on average 1.4142857142857144) internal successors, (891), 633 states have internal predecessors, (891), 124 states have call successors, (124), 41 states have call predecessors, (124), 41 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-01-10 01:09:12,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1139 transitions. [2022-01-10 01:09:12,698 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1139 transitions. Word has length 76 [2022-01-10 01:09:12,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:12,698 INFO L470 AbstractCegarLoop]: Abstraction has 796 states and 1139 transitions. [2022-01-10 01:09:12,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 01:09:12,698 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1139 transitions. [2022-01-10 01:09:12,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 01:09:12,699 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:12,699 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:09:12,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 01:09:12,699 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:12,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:12,700 INFO L85 PathProgramCache]: Analyzing trace with hash -520002270, now seen corresponding path program 1 times [2022-01-10 01:09:12,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:12,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940174132] [2022-01-10 01:09:12,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:12,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:09:12,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:12,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940174132] [2022-01-10 01:09:12,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940174132] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:12,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:12,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:09:12,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802668130] [2022-01-10 01:09:12,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:12,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:09:12,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:12,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:09:12,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:09:12,755 INFO L87 Difference]: Start difference. First operand 796 states and 1139 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 01:09:12,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:12,831 INFO L93 Difference]: Finished difference Result 1462 states and 2132 transitions. [2022-01-10 01:09:12,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:09:12,832 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 84 [2022-01-10 01:09:12,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:12,835 INFO L225 Difference]: With dead ends: 1462 [2022-01-10 01:09:12,835 INFO L226 Difference]: Without dead ends: 816 [2022-01-10 01:09:12,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:12,837 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 6 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:12,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 855 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:12,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2022-01-10 01:09:12,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2022-01-10 01:09:12,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 646 states have (on average 1.4040247678018576) internal successors, (907), 649 states have internal predecessors, (907), 124 states have call successors, (124), 45 states have call predecessors, (124), 45 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-01-10 01:09:12,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1155 transitions. [2022-01-10 01:09:12,876 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1155 transitions. Word has length 84 [2022-01-10 01:09:12,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:12,876 INFO L470 AbstractCegarLoop]: Abstraction has 816 states and 1155 transitions. [2022-01-10 01:09:12,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 01:09:12,876 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1155 transitions. [2022-01-10 01:09:12,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 01:09:12,877 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:12,877 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:09:12,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 01:09:12,878 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:12,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:12,878 INFO L85 PathProgramCache]: Analyzing trace with hash -285867028, now seen corresponding path program 1 times [2022-01-10 01:09:12,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:12,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742107898] [2022-01-10 01:09:12,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:12,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:09:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,932 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:09:12,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:12,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742107898] [2022-01-10 01:09:12,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742107898] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:12,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:12,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:09:12,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098637359] [2022-01-10 01:09:12,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:12,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:09:12,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:12,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:09:12,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:09:12,934 INFO L87 Difference]: Start difference. First operand 816 states and 1155 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 01:09:12,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:12,985 INFO L93 Difference]: Finished difference Result 1498 states and 2148 transitions. [2022-01-10 01:09:12,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:09:12,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 92 [2022-01-10 01:09:12,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:12,989 INFO L225 Difference]: With dead ends: 1498 [2022-01-10 01:09:12,989 INFO L226 Difference]: Without dead ends: 832 [2022-01-10 01:09:12,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:12,992 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 5 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:12,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 864 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:12,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2022-01-10 01:09:13,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 832. [2022-01-10 01:09:13,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 658 states have (on average 1.3966565349544073) internal successors, (919), 661 states have internal predecessors, (919), 124 states have call successors, (124), 49 states have call predecessors, (124), 49 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-01-10 01:09:13,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1167 transitions. [2022-01-10 01:09:13,030 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1167 transitions. Word has length 92 [2022-01-10 01:09:13,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:13,031 INFO L470 AbstractCegarLoop]: Abstraction has 832 states and 1167 transitions. [2022-01-10 01:09:13,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 01:09:13,031 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1167 transitions. [2022-01-10 01:09:13,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 01:09:13,032 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:13,032 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:09:13,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 01:09:13,032 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:13,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:13,032 INFO L85 PathProgramCache]: Analyzing trace with hash 2110592275, now seen corresponding path program 1 times [2022-01-10 01:09:13,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:13,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568022010] [2022-01-10 01:09:13,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:13,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:09:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:09:13,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:13,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568022010] [2022-01-10 01:09:13,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568022010] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:13,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:13,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:09:13,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043198899] [2022-01-10 01:09:13,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:13,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:09:13,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:13,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:09:13,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:09:13,118 INFO L87 Difference]: Start difference. First operand 832 states and 1167 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 01:09:13,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:13,180 INFO L93 Difference]: Finished difference Result 1534 states and 2188 transitions. [2022-01-10 01:09:13,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:09:13,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 92 [2022-01-10 01:09:13,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:13,184 INFO L225 Difference]: With dead ends: 1534 [2022-01-10 01:09:13,184 INFO L226 Difference]: Without dead ends: 852 [2022-01-10 01:09:13,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:13,187 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 6 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:13,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 855 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:13,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2022-01-10 01:09:13,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 852. [2022-01-10 01:09:13,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 674 states have (on average 1.3872403560830862) internal successors, (935), 677 states have internal predecessors, (935), 124 states have call successors, (124), 53 states have call predecessors, (124), 53 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-01-10 01:09:13,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1183 transitions. [2022-01-10 01:09:13,232 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1183 transitions. Word has length 92 [2022-01-10 01:09:13,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:13,232 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 1183 transitions. [2022-01-10 01:09:13,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 01:09:13,232 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1183 transitions. [2022-01-10 01:09:13,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 01:09:13,234 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:13,234 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] [2022-01-10 01:09:13,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 01:09:13,235 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:13,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:13,235 INFO L85 PathProgramCache]: Analyzing trace with hash 483840627, now seen corresponding path program 1 times [2022-01-10 01:09:13,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:13,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435761304] [2022-01-10 01:09:13,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:13,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:09:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 01:09:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,313 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 01:09:13,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:13,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435761304] [2022-01-10 01:09:13,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435761304] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:13,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:13,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:09:13,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233966315] [2022-01-10 01:09:13,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:13,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:09:13,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:13,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:09:13,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:09:13,314 INFO L87 Difference]: Start difference. First operand 852 states and 1183 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-01-10 01:09:13,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:13,378 INFO L93 Difference]: Finished difference Result 1578 states and 2216 transitions. [2022-01-10 01:09:13,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:09:13,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 100 [2022-01-10 01:09:13,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:13,386 INFO L225 Difference]: With dead ends: 1578 [2022-01-10 01:09:13,387 INFO L226 Difference]: Without dead ends: 876 [2022-01-10 01:09:13,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:13,389 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 7 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:13,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 866 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:13,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-01-10 01:09:13,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 876. [2022-01-10 01:09:13,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 694 states have (on average 1.3760806916426513) internal successors, (955), 697 states have internal predecessors, (955), 124 states have call successors, (124), 57 states have call predecessors, (124), 57 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-01-10 01:09:13,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1203 transitions. [2022-01-10 01:09:13,426 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1203 transitions. Word has length 100 [2022-01-10 01:09:13,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:13,427 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 1203 transitions. [2022-01-10 01:09:13,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-01-10 01:09:13,427 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1203 transitions. [2022-01-10 01:09:13,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 01:09:13,430 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:13,431 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:09:13,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 01:09:13,431 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:13,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:13,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1857958922, now seen corresponding path program 1 times [2022-01-10 01:09:13,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:13,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332600244] [2022-01-10 01:09:13,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:13,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:09:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 01:09:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-10 01:09:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,558 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 01:09:13,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:13,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332600244] [2022-01-10 01:09:13,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332600244] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:13,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:13,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:09:13,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632094415] [2022-01-10 01:09:13,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:13,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:09:13,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:13,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:09:13,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:09:13,559 INFO L87 Difference]: Start difference. First operand 876 states and 1203 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 01:09:13,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:13,798 INFO L93 Difference]: Finished difference Result 2489 states and 3477 transitions. [2022-01-10 01:09:13,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:09:13,798 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 103 [2022-01-10 01:09:13,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:13,804 INFO L225 Difference]: With dead ends: 2489 [2022-01-10 01:09:13,804 INFO L226 Difference]: Without dead ends: 1763 [2022-01-10 01:09:13,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:09:13,807 INFO L933 BasicCegarLoop]: 417 mSDtfsCounter, 392 mSDsluCounter, 1888 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 2305 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:13,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 2305 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:09:13,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2022-01-10 01:09:13,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1160. [2022-01-10 01:09:13,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 905 states have (on average 1.3668508287292818) internal successors, (1237), 910 states have internal predecessors, (1237), 172 states have call successors, (172), 82 states have call predecessors, (172), 82 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2022-01-10 01:09:13,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1581 transitions. [2022-01-10 01:09:13,874 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1581 transitions. Word has length 103 [2022-01-10 01:09:13,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:13,874 INFO L470 AbstractCegarLoop]: Abstraction has 1160 states and 1581 transitions. [2022-01-10 01:09:13,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 01:09:13,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1581 transitions. [2022-01-10 01:09:13,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 01:09:13,875 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:13,875 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:13,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 01:09:13,876 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:13,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:13,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1544619372, now seen corresponding path program 1 times [2022-01-10 01:09:13,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:13,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353566679] [2022-01-10 01:09:13,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:13,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:09:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 01:09:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-10 01:09:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,961 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 01:09:13,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:13,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353566679] [2022-01-10 01:09:13,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353566679] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:13,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:13,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:09:13,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287342853] [2022-01-10 01:09:13,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:13,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:09:13,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:13,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:09:13,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:09:13,963 INFO L87 Difference]: Start difference. First operand 1160 states and 1581 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 01:09:14,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:14,027 INFO L93 Difference]: Finished difference Result 2126 states and 2924 transitions. [2022-01-10 01:09:14,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:09:14,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 107 [2022-01-10 01:09:14,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:14,032 INFO L225 Difference]: With dead ends: 2126 [2022-01-10 01:09:14,032 INFO L226 Difference]: Without dead ends: 1184 [2022-01-10 01:09:14,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:14,036 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 5 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:14,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 864 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:14,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-01-10 01:09:14,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1184. [2022-01-10 01:09:14,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 923 states have (on average 1.3596966413867821) internal successors, (1255), 928 states have internal predecessors, (1255), 172 states have call successors, (172), 88 states have call predecessors, (172), 88 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2022-01-10 01:09:14,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1599 transitions. [2022-01-10 01:09:14,119 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1599 transitions. Word has length 107 [2022-01-10 01:09:14,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:14,119 INFO L470 AbstractCegarLoop]: Abstraction has 1184 states and 1599 transitions. [2022-01-10 01:09:14,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 01:09:14,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1599 transitions. [2022-01-10 01:09:14,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 01:09:14,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:14,121 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:09:14,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 01:09:14,121 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:14,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:14,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1746652564, now seen corresponding path program 1 times [2022-01-10 01:09:14,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:14,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230507737] [2022-01-10 01:09:14,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:14,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:09:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 01:09:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-10 01:09:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,203 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 01:09:14,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:14,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230507737] [2022-01-10 01:09:14,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230507737] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:14,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:14,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:09:14,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120666276] [2022-01-10 01:09:14,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:14,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:09:14,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:14,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:09:14,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:09:14,206 INFO L87 Difference]: Start difference. First operand 1184 states and 1599 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 01:09:14,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:14,321 INFO L93 Difference]: Finished difference Result 1655 states and 2343 transitions. [2022-01-10 01:09:14,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:09:14,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 106 [2022-01-10 01:09:14,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:14,327 INFO L225 Difference]: With dead ends: 1655 [2022-01-10 01:09:14,327 INFO L226 Difference]: Without dead ends: 1653 [2022-01-10 01:09:14,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:09:14,328 INFO L933 BasicCegarLoop]: 515 mSDtfsCounter, 261 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2255 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:14,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 2255 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:14,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2022-01-10 01:09:14,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1192. [2022-01-10 01:09:14,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 927 states have (on average 1.3581445523193096) internal successors, (1259), 934 states have internal predecessors, (1259), 174 states have call successors, (174), 90 states have call predecessors, (174), 90 states have return successors, (174), 167 states have call predecessors, (174), 174 states have call successors, (174) [2022-01-10 01:09:14,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1607 transitions. [2022-01-10 01:09:14,409 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1607 transitions. Word has length 106 [2022-01-10 01:09:14,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:14,409 INFO L470 AbstractCegarLoop]: Abstraction has 1192 states and 1607 transitions. [2022-01-10 01:09:14,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 01:09:14,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1607 transitions. [2022-01-10 01:09:14,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 01:09:14,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:14,410 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:14,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 01:09:14,411 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:14,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:14,411 INFO L85 PathProgramCache]: Analyzing trace with hash 285885957, now seen corresponding path program 1 times [2022-01-10 01:09:14,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:14,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854499405] [2022-01-10 01:09:14,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:14,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:09:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 01:09:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-10 01:09:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,484 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-10 01:09:14,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:14,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854499405] [2022-01-10 01:09:14,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854499405] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:14,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:14,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:09:14,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964167155] [2022-01-10 01:09:14,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:14,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:09:14,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:14,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:09:14,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:09:14,486 INFO L87 Difference]: Start difference. First operand 1192 states and 1607 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 01:09:14,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:14,661 INFO L93 Difference]: Finished difference Result 2446 states and 3360 transitions. [2022-01-10 01:09:14,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:09:14,662 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 109 [2022-01-10 01:09:14,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:14,667 INFO L225 Difference]: With dead ends: 2446 [2022-01-10 01:09:14,667 INFO L226 Difference]: Without dead ends: 1554 [2022-01-10 01:09:14,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:09:14,670 INFO L933 BasicCegarLoop]: 410 mSDtfsCounter, 524 mSDsluCounter, 1854 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 2264 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:14,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 2264 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:09:14,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2022-01-10 01:09:14,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1236. [2022-01-10 01:09:14,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 982 states have (on average 1.3482688391038697) internal successors, (1324), 994 states have internal predecessors, (1324), 162 states have call successors, (162), 91 states have call predecessors, (162), 91 states have return successors, (162), 150 states have call predecessors, (162), 162 states have call successors, (162) [2022-01-10 01:09:14,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1648 transitions. [2022-01-10 01:09:14,739 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1648 transitions. Word has length 109 [2022-01-10 01:09:14,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:14,739 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 1648 transitions. [2022-01-10 01:09:14,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 01:09:14,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1648 transitions. [2022-01-10 01:09:14,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 01:09:14,740 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:14,740 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:14,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 01:09:14,741 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:14,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:14,741 INFO L85 PathProgramCache]: Analyzing trace with hash 641112124, now seen corresponding path program 1 times [2022-01-10 01:09:14,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:14,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534139649] [2022-01-10 01:09:14,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:14,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:09:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 01:09:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-10 01:09:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-10 01:09:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,846 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 01:09:14,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:14,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534139649] [2022-01-10 01:09:14,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534139649] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:14,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:14,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:09:14,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933947604] [2022-01-10 01:09:14,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:14,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:09:14,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:14,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:09:14,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:09:14,847 INFO L87 Difference]: Start difference. First operand 1236 states and 1648 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 01:09:15,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:15,055 INFO L93 Difference]: Finished difference Result 2538 states and 3469 transitions. [2022-01-10 01:09:15,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:09:15,055 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 111 [2022-01-10 01:09:15,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:15,060 INFO L225 Difference]: With dead ends: 2538 [2022-01-10 01:09:15,061 INFO L226 Difference]: Without dead ends: 1582 [2022-01-10 01:09:15,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:09:15,063 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 396 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 2414 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:15,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 2414 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:09:15,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2022-01-10 01:09:15,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1123. [2022-01-10 01:09:15,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 896 states have (on average 1.3493303571428572) internal successors, (1209), 906 states have internal predecessors, (1209), 145 states have call successors, (145), 81 states have call predecessors, (145), 81 states have return successors, (145), 135 states have call predecessors, (145), 145 states have call successors, (145) [2022-01-10 01:09:15,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1499 transitions. [2022-01-10 01:09:15,130 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1499 transitions. Word has length 111 [2022-01-10 01:09:15,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:15,130 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1499 transitions. [2022-01-10 01:09:15,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 01:09:15,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1499 transitions. [2022-01-10 01:09:15,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 01:09:15,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:15,131 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:15,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 01:09:15,131 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:15,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:15,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1939847605, now seen corresponding path program 1 times [2022-01-10 01:09:15,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:15,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485250839] [2022-01-10 01:09:15,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:15,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:15,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:09:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 01:09:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-10 01:09:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 01:09:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 01:09:15,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:15,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485250839] [2022-01-10 01:09:15,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485250839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:15,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:15,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:09:15,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718244050] [2022-01-10 01:09:15,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:15,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:09:15,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:15,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:09:15,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:09:15,242 INFO L87 Difference]: Start difference. First operand 1123 states and 1499 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 01:09:15,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:15,765 INFO L93 Difference]: Finished difference Result 2606 states and 3573 transitions. [2022-01-10 01:09:15,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 01:09:15,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 112 [2022-01-10 01:09:15,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:15,771 INFO L225 Difference]: With dead ends: 2606 [2022-01-10 01:09:15,771 INFO L226 Difference]: Without dead ends: 1683 [2022-01-10 01:09:15,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-01-10 01:09:15,773 INFO L933 BasicCegarLoop]: 506 mSDtfsCounter, 1047 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 2152 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:15,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1053 Valid, 2152 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 01:09:15,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2022-01-10 01:09:15,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1139. [2022-01-10 01:09:15,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 904 states have (on average 1.329646017699115) internal successors, (1202), 915 states have internal predecessors, (1202), 148 states have call successors, (148), 86 states have call predecessors, (148), 86 states have return successors, (148), 137 states have call predecessors, (148), 148 states have call successors, (148) [2022-01-10 01:09:15,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1498 transitions. [2022-01-10 01:09:15,852 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1498 transitions. Word has length 112 [2022-01-10 01:09:15,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:15,853 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 1498 transitions. [2022-01-10 01:09:15,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 01:09:15,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1498 transitions. [2022-01-10 01:09:15,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 01:09:15,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:15,854 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:15,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 01:09:15,854 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:15,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:15,854 INFO L85 PathProgramCache]: Analyzing trace with hash 889695918, now seen corresponding path program 1 times [2022-01-10 01:09:15,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:15,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671672227] [2022-01-10 01:09:15,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:15,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 01:09:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:09:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 01:09:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-10 01:09:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 01:09:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,904 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:09:15,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:15,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671672227] [2022-01-10 01:09:15,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671672227] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:15,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:15,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:09:15,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427795281] [2022-01-10 01:09:15,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:15,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:09:15,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:15,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:09:15,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:09:15,906 INFO L87 Difference]: Start difference. First operand 1139 states and 1498 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:16,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:16,156 INFO L93 Difference]: Finished difference Result 3175 states and 4263 transitions. [2022-01-10 01:09:16,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:09:16,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 112 [2022-01-10 01:09:16,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:16,164 INFO L225 Difference]: With dead ends: 3175 [2022-01-10 01:09:16,165 INFO L226 Difference]: Without dead ends: 2287 [2022-01-10 01:09:16,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:16,167 INFO L933 BasicCegarLoop]: 510 mSDtfsCounter, 437 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:16,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 1223 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:09:16,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2287 states. [2022-01-10 01:09:16,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2287 to 1935. [2022-01-10 01:09:16,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1935 states, 1510 states have (on average 1.3271523178807947) internal successors, (2004), 1529 states have internal predecessors, (2004), 272 states have call successors, (272), 152 states have call predecessors, (272), 152 states have return successors, (272), 253 states have call predecessors, (272), 272 states have call successors, (272) [2022-01-10 01:09:16,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 2548 transitions. [2022-01-10 01:09:16,294 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 2548 transitions. Word has length 112 [2022-01-10 01:09:16,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:16,295 INFO L470 AbstractCegarLoop]: Abstraction has 1935 states and 2548 transitions. [2022-01-10 01:09:16,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:16,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 2548 transitions. [2022-01-10 01:09:16,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 01:09:16,296 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:16,296 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:16,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 01:09:16,296 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:16,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:16,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1041296419, now seen corresponding path program 1 times [2022-01-10 01:09:16,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:16,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697316578] [2022-01-10 01:09:16,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:16,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:16,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:16,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:16,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:16,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 01:09:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:16,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:16,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:16,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:09:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:16,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 01:09:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:16,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-10 01:09:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:16,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 01:09:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:16,399 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 01:09:16,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:16,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697316578] [2022-01-10 01:09:16,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697316578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:16,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:16,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:09:16,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119947338] [2022-01-10 01:09:16,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:16,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:09:16,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:16,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:09:16,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:09:16,401 INFO L87 Difference]: Start difference. First operand 1935 states and 2548 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:16,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:16,941 INFO L93 Difference]: Finished difference Result 4386 states and 5918 transitions. [2022-01-10 01:09:16,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 01:09:16,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 114 [2022-01-10 01:09:16,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:16,950 INFO L225 Difference]: With dead ends: 4386 [2022-01-10 01:09:16,950 INFO L226 Difference]: Without dead ends: 2800 [2022-01-10 01:09:16,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-01-10 01:09:16,953 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 802 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 2505 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:16,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [805 Valid, 2505 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 01:09:16,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2800 states. [2022-01-10 01:09:17,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2800 to 1954. [2022-01-10 01:09:17,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1954 states, 1516 states have (on average 1.3232189973614776) internal successors, (2006), 1536 states have internal predecessors, (2006), 280 states have call successors, (280), 157 states have call predecessors, (280), 157 states have return successors, (280), 260 states have call predecessors, (280), 280 states have call successors, (280) [2022-01-10 01:09:17,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 2566 transitions. [2022-01-10 01:09:17,119 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 2566 transitions. Word has length 114 [2022-01-10 01:09:17,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:17,120 INFO L470 AbstractCegarLoop]: Abstraction has 1954 states and 2566 transitions. [2022-01-10 01:09:17,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:17,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 2566 transitions. [2022-01-10 01:09:17,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 01:09:17,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:17,121 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:17,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 01:09:17,121 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:17,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:17,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1708808100, now seen corresponding path program 1 times [2022-01-10 01:09:17,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:17,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966366784] [2022-01-10 01:09:17,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:17,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-10 01:09:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-10 01:09:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:09:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:09:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-10 01:09:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-10 01:09:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-10 01:09:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,169 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:09:17,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:17,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966366784] [2022-01-10 01:09:17,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966366784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:17,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:17,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:09:17,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510402561] [2022-01-10 01:09:17,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:17,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:09:17,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:17,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:09:17,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:09:17,171 INFO L87 Difference]: Start difference. First operand 1954 states and 2566 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:17,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:17,472 INFO L93 Difference]: Finished difference Result 5154 states and 6849 transitions. [2022-01-10 01:09:17,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:09:17,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2022-01-10 01:09:17,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:17,488 INFO L225 Difference]: With dead ends: 5154 [2022-01-10 01:09:17,488 INFO L226 Difference]: Without dead ends: 3584 [2022-01-10 01:09:17,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:17,494 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 484 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:17,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [484 Valid, 1287 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:09:17,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3584 states. [2022-01-10 01:09:17,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3584 to 3015. [2022-01-10 01:09:17,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 2302 states have (on average 1.3192875760208513) internal successors, (3037), 2333 states have internal predecessors, (3037), 460 states have call successors, (460), 252 states have call predecessors, (460), 252 states have return successors, (460), 429 states have call predecessors, (460), 460 states have call successors, (460) [2022-01-10 01:09:17,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 3957 transitions. [2022-01-10 01:09:17,703 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 3957 transitions. Word has length 115 [2022-01-10 01:09:17,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:17,703 INFO L470 AbstractCegarLoop]: Abstraction has 3015 states and 3957 transitions. [2022-01-10 01:09:17,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:17,704 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 3957 transitions. [2022-01-10 01:09:17,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 01:09:17,705 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:17,705 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:17,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 01:09:17,706 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:17,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:17,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1228455916, now seen corresponding path program 1 times [2022-01-10 01:09:17,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:17,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762233317] [2022-01-10 01:09:17,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:17,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-10 01:09:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-10 01:09:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-10 01:09:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 01:09:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 01:09:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-10 01:09:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-10 01:09:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,756 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:09:17,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:17,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762233317] [2022-01-10 01:09:17,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762233317] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:17,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:17,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:09:17,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678671049] [2022-01-10 01:09:17,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:17,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:09:17,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:17,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:09:17,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:09:17,759 INFO L87 Difference]: Start difference. First operand 3015 states and 3957 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:18,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:18,111 INFO L93 Difference]: Finished difference Result 7127 states and 9424 transitions. [2022-01-10 01:09:18,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:09:18,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2022-01-10 01:09:18,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:18,136 INFO L225 Difference]: With dead ends: 7127 [2022-01-10 01:09:18,136 INFO L226 Difference]: Without dead ends: 4626 [2022-01-10 01:09:18,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:18,141 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 431 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:18,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 1283 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:09:18,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4626 states. [2022-01-10 01:09:18,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4626 to 4292. [2022-01-10 01:09:18,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4292 states, 3255 states have (on average 1.3170506912442397) internal successors, (4287), 3299 states have internal predecessors, (4287), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2022-01-10 01:09:18,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4292 states to 4292 states and 5631 transitions. [2022-01-10 01:09:18,458 INFO L78 Accepts]: Start accepts. Automaton has 4292 states and 5631 transitions. Word has length 115 [2022-01-10 01:09:18,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:18,458 INFO L470 AbstractCegarLoop]: Abstraction has 4292 states and 5631 transitions. [2022-01-10 01:09:18,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:18,458 INFO L276 IsEmpty]: Start isEmpty. Operand 4292 states and 5631 transitions. [2022-01-10 01:09:18,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-10 01:09:18,460 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:18,460 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:18,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 01:09:18,460 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:18,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:18,461 INFO L85 PathProgramCache]: Analyzing trace with hash 331094376, now seen corresponding path program 1 times [2022-01-10 01:09:18,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:18,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780157520] [2022-01-10 01:09:18,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:18,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:18,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:18,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-10 01:09:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:18,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-10 01:09:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:18,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-10 01:09:18,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:18,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-10 01:09:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:18,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 01:09:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:18,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-10 01:09:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:18,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-10 01:09:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:18,498 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:09:18,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:18,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780157520] [2022-01-10 01:09:18,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780157520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:18,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:18,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:09:18,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523118185] [2022-01-10 01:09:18,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:18,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:09:18,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:18,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:09:18,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:09:18,501 INFO L87 Difference]: Start difference. First operand 4292 states and 5631 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:18,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:18,953 INFO L93 Difference]: Finished difference Result 9705 states and 13179 transitions. [2022-01-10 01:09:18,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:09:18,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 116 [2022-01-10 01:09:18,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:18,967 INFO L225 Difference]: With dead ends: 9705 [2022-01-10 01:09:18,967 INFO L226 Difference]: Without dead ends: 5818 [2022-01-10 01:09:18,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 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 01:09:18,974 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 151 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:18,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 704 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:09:18,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5818 states. [2022-01-10 01:09:19,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5818 to 4298. [2022-01-10 01:09:19,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4298 states, 3261 states have (on average 1.3164673413063477) internal successors, (4293), 3305 states have internal predecessors, (4293), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2022-01-10 01:09:19,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4298 states to 4298 states and 5637 transitions. [2022-01-10 01:09:19,291 INFO L78 Accepts]: Start accepts. Automaton has 4298 states and 5637 transitions. Word has length 116 [2022-01-10 01:09:19,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:19,291 INFO L470 AbstractCegarLoop]: Abstraction has 4298 states and 5637 transitions. [2022-01-10 01:09:19,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:19,291 INFO L276 IsEmpty]: Start isEmpty. Operand 4298 states and 5637 transitions. [2022-01-10 01:09:19,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 01:09:19,293 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:19,293 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:09:19,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 01:09:19,293 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:19,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:19,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1590062833, now seen corresponding path program 1 times [2022-01-10 01:09:19,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:19,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008742587] [2022-01-10 01:09:19,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:19,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:19,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:19,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-10 01:09:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:19,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-10 01:09:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:19,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-10 01:09:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:19,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 01:09:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:19,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 01:09:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:19,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-10 01:09:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:19,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-10 01:09:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:19,360 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:09:19,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:19,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008742587] [2022-01-10 01:09:19,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008742587] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:19,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:19,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:09:19,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380655751] [2022-01-10 01:09:19,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:19,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:09:19,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:19,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:09:19,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:09:19,361 INFO L87 Difference]: Start difference. First operand 4298 states and 5637 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:19,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:19,742 INFO L93 Difference]: Finished difference Result 9003 states and 12067 transitions. [2022-01-10 01:09:19,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:09:19,742 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 117 [2022-01-10 01:09:19,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:19,752 INFO L225 Difference]: With dead ends: 9003 [2022-01-10 01:09:19,752 INFO L226 Difference]: Without dead ends: 4802 [2022-01-10 01:09:19,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:19,757 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 369 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:19,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 882 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:19,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4802 states. [2022-01-10 01:09:20,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4802 to 3865. [2022-01-10 01:09:20,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3865 states, 2911 states have (on average 1.3229130882858124) internal successors, (3851), 2945 states have internal predecessors, (3851), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2022-01-10 01:09:20,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3865 states to 3865 states and 5091 transitions. [2022-01-10 01:09:20,019 INFO L78 Accepts]: Start accepts. Automaton has 3865 states and 5091 transitions. Word has length 117 [2022-01-10 01:09:20,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:20,019 INFO L470 AbstractCegarLoop]: Abstraction has 3865 states and 5091 transitions. [2022-01-10 01:09:20,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:20,020 INFO L276 IsEmpty]: Start isEmpty. Operand 3865 states and 5091 transitions. [2022-01-10 01:09:20,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 01:09:20,020 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:20,021 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:09:20,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 01:09:20,021 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:20,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:20,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1465420109, now seen corresponding path program 1 times [2022-01-10 01:09:20,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:20,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811911919] [2022-01-10 01:09:20,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:20,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-10 01:09:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-10 01:09:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-10 01:09:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-10 01:09:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 01:09:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-10 01:09:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-10 01:09:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,087 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:09:20,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:20,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811911919] [2022-01-10 01:09:20,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811911919] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:20,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:20,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:09:20,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383114267] [2022-01-10 01:09:20,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:20,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:09:20,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:20,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:09:20,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:09:20,092 INFO L87 Difference]: Start difference. First operand 3865 states and 5091 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:20,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:20,576 INFO L93 Difference]: Finished difference Result 8503 states and 11497 transitions. [2022-01-10 01:09:20,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:09:20,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 118 [2022-01-10 01:09:20,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:20,591 INFO L225 Difference]: With dead ends: 8503 [2022-01-10 01:09:20,591 INFO L226 Difference]: Without dead ends: 4851 [2022-01-10 01:09:20,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 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 01:09:20,599 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 151 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:20,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 680 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:09:20,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4851 states. [2022-01-10 01:09:20,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4851 to 3875. [2022-01-10 01:09:20,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3875 states, 2921 states have (on average 1.3218076001369394) internal successors, (3861), 2955 states have internal predecessors, (3861), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2022-01-10 01:09:20,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3875 states to 3875 states and 5101 transitions. [2022-01-10 01:09:20,904 INFO L78 Accepts]: Start accepts. Automaton has 3875 states and 5101 transitions. Word has length 118 [2022-01-10 01:09:20,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:20,904 INFO L470 AbstractCegarLoop]: Abstraction has 3875 states and 5101 transitions. [2022-01-10 01:09:20,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:20,904 INFO L276 IsEmpty]: Start isEmpty. Operand 3875 states and 5101 transitions. [2022-01-10 01:09:20,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 01:09:20,905 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:20,905 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:09:20,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 01:09:20,906 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:20,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:20,906 INFO L85 PathProgramCache]: Analyzing trace with hash -132784146, now seen corresponding path program 1 times [2022-01-10 01:09:20,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:20,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476560262] [2022-01-10 01:09:20,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:20,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-10 01:09:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-10 01:09:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-10 01:09:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-10 01:09:20,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 01:09:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-10 01:09:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-10 01:09:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,957 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:09:20,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:20,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476560262] [2022-01-10 01:09:20,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476560262] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:20,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:20,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:09:20,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515454318] [2022-01-10 01:09:20,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:20,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:09:20,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:20,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:09:20,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:09:20,958 INFO L87 Difference]: Start difference. First operand 3875 states and 5101 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:21,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:21,312 INFO L93 Difference]: Finished difference Result 8451 states and 11414 transitions. [2022-01-10 01:09:21,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:09:21,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 118 [2022-01-10 01:09:21,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:21,324 INFO L225 Difference]: With dead ends: 8451 [2022-01-10 01:09:21,324 INFO L226 Difference]: Without dead ends: 4722 [2022-01-10 01:09:21,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:21,331 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 284 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:21,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 913 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:21,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4722 states. [2022-01-10 01:09:21,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4722 to 2925. [2022-01-10 01:09:21,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2925 states, 2205 states have (on average 1.3133786848072562) internal successors, (2896), 2224 states have internal predecessors, (2896), 469 states have call successors, (469), 250 states have call predecessors, (469), 250 states have return successors, (469), 450 states have call predecessors, (469), 469 states have call successors, (469) [2022-01-10 01:09:21,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 3834 transitions. [2022-01-10 01:09:21,550 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 3834 transitions. Word has length 118 [2022-01-10 01:09:21,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:21,550 INFO L470 AbstractCegarLoop]: Abstraction has 2925 states and 3834 transitions. [2022-01-10 01:09:21,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:21,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 3834 transitions. [2022-01-10 01:09:21,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-10 01:09:21,554 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:21,554 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:21,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 01:09:21,555 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:21,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:21,555 INFO L85 PathProgramCache]: Analyzing trace with hash -664741411, now seen corresponding path program 1 times [2022-01-10 01:09:21,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:21,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017339785] [2022-01-10 01:09:21,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:21,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:21,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:21,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:21,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:21,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:21,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:09:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:21,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 01:09:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:21,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-10 01:09:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:21,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-10 01:09:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:21,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-10 01:09:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:21,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-10 01:09:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:21,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-10 01:09:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:21,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-10 01:09:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:21,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-10 01:09:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:21,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-10 01:09:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:21,688 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 16 proven. 28 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-01-10 01:09:21,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:21,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017339785] [2022-01-10 01:09:21,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017339785] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:09:21,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515145849] [2022-01-10 01:09:21,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:21,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:09:21,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:09:21,690 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 01:09:21,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 01:09:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:21,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 01:09:21,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:09:22,204 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 77 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-10 01:09:22,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:09:22,538 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-01-10 01:09:22,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515145849] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 01:09:22,538 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 01:09:22,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-01-10 01:09:22,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69467683] [2022-01-10 01:09:22,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 01:09:22,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 01:09:22,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:22,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 01:09:22,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-10 01:09:22,540 INFO L87 Difference]: Start difference. First operand 2925 states and 3834 transitions. Second operand has 14 states, 14 states have (on average 18.714285714285715) internal successors, (262), 13 states have internal predecessors, (262), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-01-10 01:09:25,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:25,537 INFO L93 Difference]: Finished difference Result 9990 states and 13988 transitions. [2022-01-10 01:09:25,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-10 01:09:25,538 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.714285714285715) internal successors, (262), 13 states have internal predecessors, (262), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 185 [2022-01-10 01:09:25,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:25,559 INFO L225 Difference]: With dead ends: 9990 [2022-01-10 01:09:25,560 INFO L226 Difference]: Without dead ends: 7352 [2022-01-10 01:09:25,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 402 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1358 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=749, Invalid=3411, Unknown=0, NotChecked=0, Total=4160 [2022-01-10 01:09:25,566 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 4455 mSDsluCounter, 2937 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 1308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4455 SdHoareTripleChecker+Valid, 3273 SdHoareTripleChecker+Invalid, 3346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1308 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:25,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4455 Valid, 3273 Invalid, 3346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1308 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 01:09:25,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7352 states. [2022-01-10 01:09:25,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7352 to 3449. [2022-01-10 01:09:25,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3449 states, 2622 states have (on average 1.3093058733790999) internal successors, (3433), 2642 states have internal predecessors, (3433), 531 states have call successors, (531), 295 states have call predecessors, (531), 295 states have return successors, (531), 511 states have call predecessors, (531), 531 states have call successors, (531) [2022-01-10 01:09:25,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3449 states to 3449 states and 4495 transitions. [2022-01-10 01:09:25,984 INFO L78 Accepts]: Start accepts. Automaton has 3449 states and 4495 transitions. Word has length 185 [2022-01-10 01:09:25,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:25,984 INFO L470 AbstractCegarLoop]: Abstraction has 3449 states and 4495 transitions. [2022-01-10 01:09:25,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.714285714285715) internal successors, (262), 13 states have internal predecessors, (262), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-01-10 01:09:25,984 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states and 4495 transitions. [2022-01-10 01:09:25,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-01-10 01:09:25,989 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:25,989 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:26,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 01:09:26,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-10 01:09:26,206 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:26,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:26,206 INFO L85 PathProgramCache]: Analyzing trace with hash 782511274, now seen corresponding path program 1 times [2022-01-10 01:09:26,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:26,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091044827] [2022-01-10 01:09:26,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:26,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 01:09:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:09:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 01:09:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-10 01:09:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-10 01:09:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-10 01:09:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-10 01:09:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-10 01:09:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-10 01:09:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-10 01:09:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-10 01:09:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-10 01:09:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,371 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 16 proven. 23 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-01-10 01:09:26,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:26,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091044827] [2022-01-10 01:09:26,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091044827] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:09:26,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867063075] [2022-01-10 01:09:26,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:26,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:09:26,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:09:26,373 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 01:09:26,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 01:09:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 01:09:26,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:09:26,905 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 36 proven. 53 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 01:09:26,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:09:27,226 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-01-10 01:09:27,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867063075] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 01:09:27,226 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 01:09:27,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-01-10 01:09:27,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040963144] [2022-01-10 01:09:27,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 01:09:27,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 01:09:27,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:27,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 01:09:27,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:09:27,229 INFO L87 Difference]: Start difference. First operand 3449 states and 4495 transitions. Second operand has 16 states, 16 states have (on average 16.5) internal successors, (264), 14 states have internal predecessors, (264), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) [2022-01-10 01:09:34,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:34,450 INFO L93 Difference]: Finished difference Result 17499 states and 23924 transitions. [2022-01-10 01:09:34,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-01-10 01:09:34,451 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 16.5) internal successors, (264), 14 states have internal predecessors, (264), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) Word has length 193 [2022-01-10 01:09:34,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:34,481 INFO L225 Difference]: With dead ends: 17499 [2022-01-10 01:09:34,481 INFO L226 Difference]: Without dead ends: 14346 [2022-01-10 01:09:34,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 474 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5045 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1835, Invalid=12207, Unknown=0, NotChecked=0, Total=14042 [2022-01-10 01:09:34,491 INFO L933 BasicCegarLoop]: 1822 mSDtfsCounter, 7160 mSDsluCounter, 13743 mSDsCounter, 0 mSdLazyCounter, 5454 mSolverCounterSat, 4426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7160 SdHoareTripleChecker+Valid, 15565 SdHoareTripleChecker+Invalid, 9880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4426 IncrementalHoareTripleChecker+Valid, 5454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:34,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7160 Valid, 15565 Invalid, 9880 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4426 Valid, 5454 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-01-10 01:09:34,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14346 states. [2022-01-10 01:09:35,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14346 to 6315. [2022-01-10 01:09:35,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6315 states, 4771 states have (on average 1.3114651016558374) internal successors, (6257), 4809 states have internal predecessors, (6257), 992 states have call successors, (992), 551 states have call predecessors, (992), 551 states have return successors, (992), 954 states have call predecessors, (992), 992 states have call successors, (992) [2022-01-10 01:09:35,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6315 states to 6315 states and 8241 transitions. [2022-01-10 01:09:35,220 INFO L78 Accepts]: Start accepts. Automaton has 6315 states and 8241 transitions. Word has length 193 [2022-01-10 01:09:35,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:35,221 INFO L470 AbstractCegarLoop]: Abstraction has 6315 states and 8241 transitions. [2022-01-10 01:09:35,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.5) internal successors, (264), 14 states have internal predecessors, (264), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) [2022-01-10 01:09:35,221 INFO L276 IsEmpty]: Start isEmpty. Operand 6315 states and 8241 transitions. [2022-01-10 01:09:35,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-01-10 01:09:35,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:35,228 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:35,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 01:09:35,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-10 01:09:35,439 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:35,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:35,440 INFO L85 PathProgramCache]: Analyzing trace with hash -579946063, now seen corresponding path program 1 times [2022-01-10 01:09:35,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:35,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403583475] [2022-01-10 01:09:35,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:35,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 01:09:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-10 01:09:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:09:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:09:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-10 01:09:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-10 01:09:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-10 01:09:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-10 01:09:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-10 01:09:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-10 01:09:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-10 01:09:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-10 01:09:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-10 01:09:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-10 01:09:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,525 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-01-10 01:09:35,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:35,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403583475] [2022-01-10 01:09:35,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403583475] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:35,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:35,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:09:35,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058255443] [2022-01-10 01:09:35,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:35,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:09:35,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:35,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:09:35,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:09:35,526 INFO L87 Difference]: Start difference. First operand 6315 states and 8241 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 01:09:37,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:37,389 INFO L93 Difference]: Finished difference Result 21323 states and 28571 transitions. [2022-01-10 01:09:37,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 01:09:37,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 195 [2022-01-10 01:09:37,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:37,425 INFO L225 Difference]: With dead ends: 21323 [2022-01-10 01:09:37,425 INFO L226 Difference]: Without dead ends: 15366 [2022-01-10 01:09:37,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-01-10 01:09:37,436 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 811 mSDsluCounter, 2510 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 3082 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:37,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [830 Valid, 3082 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:09:37,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15366 states. [2022-01-10 01:09:38,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15366 to 8157. [2022-01-10 01:09:38,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8157 states, 6101 states have (on average 1.3088018357646287) internal successors, (7985), 6152 states have internal predecessors, (7985), 1335 states have call successors, (1335), 720 states have call predecessors, (1335), 720 states have return successors, (1335), 1284 states have call predecessors, (1335), 1335 states have call successors, (1335) [2022-01-10 01:09:38,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8157 states to 8157 states and 10655 transitions. [2022-01-10 01:09:38,356 INFO L78 Accepts]: Start accepts. Automaton has 8157 states and 10655 transitions. Word has length 195 [2022-01-10 01:09:38,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:38,356 INFO L470 AbstractCegarLoop]: Abstraction has 8157 states and 10655 transitions. [2022-01-10 01:09:38,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 01:09:38,357 INFO L276 IsEmpty]: Start isEmpty. Operand 8157 states and 10655 transitions. [2022-01-10 01:09:38,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-01-10 01:09:38,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:38,366 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:38,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-10 01:09:38,366 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:38,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:38,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1014240118, now seen corresponding path program 1 times [2022-01-10 01:09:38,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:38,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804126467] [2022-01-10 01:09:38,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:38,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 01:09:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-10 01:09:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:09:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:09:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-10 01:09:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-10 01:09:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-10 01:09:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-10 01:09:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-10 01:09:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-10 01:09:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-10 01:09:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-10 01:09:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-10 01:09:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-10 01:09:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,497 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-01-10 01:09:38,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:38,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804126467] [2022-01-10 01:09:38,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804126467] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:09:38,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755485976] [2022-01-10 01:09:38,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:38,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:09:38,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:09:38,499 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 01:09:38,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 01:09:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 01:09:38,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:09:38,907 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 49 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-10 01:09:38,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:09:39,196 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-10 01:09:39,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755485976] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 01:09:39,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 01:09:39,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 7] total 14 [2022-01-10 01:09:39,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390267520] [2022-01-10 01:09:39,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:39,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:09:39,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:39,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:09:39,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-10 01:09:39,199 INFO L87 Difference]: Start difference. First operand 8157 states and 10655 transitions. Second operand has 5 states, 4 states have (on average 28.5) internal successors, (114), 5 states have internal predecessors, (114), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 01:09:39,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:39,709 INFO L93 Difference]: Finished difference Result 13437 states and 17606 transitions. [2022-01-10 01:09:39,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:09:39,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 28.5) internal successors, (114), 5 states have internal predecessors, (114), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 197 [2022-01-10 01:09:39,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:39,722 INFO L225 Difference]: With dead ends: 13437 [2022-01-10 01:09:39,722 INFO L226 Difference]: Without dead ends: 5486 [2022-01-10 01:09:39,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-10 01:09:39,732 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 2 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:39,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1156 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:39,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5486 states. [2022-01-10 01:09:40,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5486 to 5486. [2022-01-10 01:09:40,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5486 states, 4104 states have (on average 1.3082358674463939) internal successors, (5369), 4138 states have internal predecessors, (5369), 901 states have call successors, (901), 480 states have call predecessors, (901), 480 states have return successors, (901), 867 states have call predecessors, (901), 901 states have call successors, (901) [2022-01-10 01:09:40,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5486 states to 5486 states and 7171 transitions. [2022-01-10 01:09:40,366 INFO L78 Accepts]: Start accepts. Automaton has 5486 states and 7171 transitions. Word has length 197 [2022-01-10 01:09:40,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:40,367 INFO L470 AbstractCegarLoop]: Abstraction has 5486 states and 7171 transitions. [2022-01-10 01:09:40,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 28.5) internal successors, (114), 5 states have internal predecessors, (114), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 01:09:40,367 INFO L276 IsEmpty]: Start isEmpty. Operand 5486 states and 7171 transitions. [2022-01-10 01:09:40,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-01-10 01:09:40,373 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:40,373 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:40,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 01:09:40,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:09:40,593 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:40,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:40,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1806123049, now seen corresponding path program 1 times [2022-01-10 01:09:40,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:40,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507040536] [2022-01-10 01:09:40,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:40,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:40,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:40,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 01:09:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:40,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-10 01:09:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:40,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:09:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:40,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:09:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:40,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-10 01:09:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:40,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-10 01:09:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:40,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-10 01:09:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:40,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-10 01:09:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:40,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 01:09:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:40,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-10 01:09:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:40,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-10 01:09:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:40,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-10 01:09:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:40,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-10 01:09:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:40,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-10 01:09:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-01-10 01:09:40,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:40,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507040536] [2022-01-10 01:09:40,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507040536] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:09:40,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557816717] [2022-01-10 01:09:40,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:40,747 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:09:40,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:09:40,748 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 01:09:40,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 01:09:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:40,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 01:09:40,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:09:41,509 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 71 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 01:09:41,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:09:41,919 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-01-10 01:09:41,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557816717] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 01:09:41,919 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 01:09:41,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 24 [2022-01-10 01:09:41,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904976441] [2022-01-10 01:09:41,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 01:09:41,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-10 01:09:41,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:41,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-10 01:09:41,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2022-01-10 01:09:41,921 INFO L87 Difference]: Start difference. First operand 5486 states and 7171 transitions. Second operand has 24 states, 24 states have (on average 14.25) internal successors, (342), 24 states have internal predecessors, (342), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) [2022-01-10 01:09:56,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:56,602 INFO L93 Difference]: Finished difference Result 28569 states and 40063 transitions. [2022-01-10 01:09:56,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2022-01-10 01:09:56,602 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 14.25) internal successors, (342), 24 states have internal predecessors, (342), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) Word has length 197 [2022-01-10 01:09:56,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:56,656 INFO L225 Difference]: With dead ends: 28569 [2022-01-10 01:09:56,656 INFO L226 Difference]: Without dead ends: 23367 [2022-01-10 01:09:56,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 415 SyntacticMatches, 1 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26384 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=6223, Invalid=57029, Unknown=0, NotChecked=0, Total=63252 [2022-01-10 01:09:56,677 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 9301 mSDsluCounter, 7984 mSDsCounter, 0 mSdLazyCounter, 12849 mSolverCounterSat, 4404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9301 SdHoareTripleChecker+Valid, 8688 SdHoareTripleChecker+Invalid, 17253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4404 IncrementalHoareTripleChecker+Valid, 12849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:56,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9301 Valid, 8688 Invalid, 17253 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4404 Valid, 12849 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-01-10 01:09:56,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23367 states. [2022-01-10 01:09:58,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23367 to 11873. [2022-01-10 01:09:58,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11873 states, 8944 states have (on average 1.3064624329159213) internal successors, (11685), 9014 states have internal predecessors, (11685), 1889 states have call successors, (1889), 1039 states have call predecessors, (1889), 1039 states have return successors, (1889), 1819 states have call predecessors, (1889), 1889 states have call successors, (1889) [2022-01-10 01:09:58,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11873 states to 11873 states and 15463 transitions. [2022-01-10 01:09:58,226 INFO L78 Accepts]: Start accepts. Automaton has 11873 states and 15463 transitions. Word has length 197 [2022-01-10 01:09:58,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:58,227 INFO L470 AbstractCegarLoop]: Abstraction has 11873 states and 15463 transitions. [2022-01-10 01:09:58,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 14.25) internal successors, (342), 24 states have internal predecessors, (342), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) [2022-01-10 01:09:58,227 INFO L276 IsEmpty]: Start isEmpty. Operand 11873 states and 15463 transitions. [2022-01-10 01:09:58,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-01-10 01:09:58,242 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:58,242 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:58,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 01:09:58,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:09:58,459 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:58,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:58,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2096530114, now seen corresponding path program 1 times [2022-01-10 01:09:58,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:58,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275414953] [2022-01-10 01:09:58,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:58,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:58,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:58,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 01:09:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:58,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-10 01:09:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:58,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:09:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:58,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:09:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:58,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-10 01:09:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:58,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-10 01:09:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:58,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-10 01:09:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:58,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-10 01:09:58,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:58,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 01:09:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:58,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-10 01:09:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:58,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-10 01:09:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:58,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-10 01:09:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:58,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-10 01:09:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:58,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-10 01:09:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:58,541 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-01-10 01:09:58,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:58,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275414953] [2022-01-10 01:09:58,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275414953] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:58,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:58,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:09:58,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674705806] [2022-01-10 01:09:58,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:58,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:09:58,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:58,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:09:58,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:58,542 INFO L87 Difference]: Start difference. First operand 11873 states and 15463 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 01:09:59,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:59,871 INFO L93 Difference]: Finished difference Result 22733 states and 29699 transitions. [2022-01-10 01:09:59,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:09:59,872 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), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 197 [2022-01-10 01:09:59,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:59,894 INFO L225 Difference]: With dead ends: 22733 [2022-01-10 01:09:59,895 INFO L226 Difference]: Without dead ends: 11127 [2022-01-10 01:09:59,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:59,908 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 449 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:59,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 475 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:09:59,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11127 states. [2022-01-10 01:10:01,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11127 to 11125. [2022-01-10 01:10:01,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11125 states, 8388 states have (on average 1.308416785884597) internal successors, (10975), 8454 states have internal predecessors, (10975), 1767 states have call successors, (1767), 969 states have call predecessors, (1767), 969 states have return successors, (1767), 1701 states have call predecessors, (1767), 1767 states have call successors, (1767) [2022-01-10 01:10:01,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11125 states to 11125 states and 14509 transitions. [2022-01-10 01:10:01,164 INFO L78 Accepts]: Start accepts. Automaton has 11125 states and 14509 transitions. Word has length 197 [2022-01-10 01:10:01,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:01,165 INFO L470 AbstractCegarLoop]: Abstraction has 11125 states and 14509 transitions. [2022-01-10 01:10:01,165 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), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 01:10:01,165 INFO L276 IsEmpty]: Start isEmpty. Operand 11125 states and 14509 transitions. [2022-01-10 01:10:01,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-01-10 01:10:01,178 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:01,178 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:10:01,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-10 01:10:01,179 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:01,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:01,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1193102570, now seen corresponding path program 1 times [2022-01-10 01:10:01,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:01,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281177796] [2022-01-10 01:10:01,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:01,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:01,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:10:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:01,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 01:10:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:01,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-10 01:10:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:01,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:10:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:01,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:10:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:01,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-10 01:10:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:01,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-10 01:10:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:01,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-10 01:10:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:01,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-10 01:10:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:01,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 01:10:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:01,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-10 01:10:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:01,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-10 01:10:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:01,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-10 01:10:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:01,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-10 01:10:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:01,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-10 01:10:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:01,321 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 29 proven. 19 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-01-10 01:10:01,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:01,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281177796] [2022-01-10 01:10:01,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281177796] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:10:01,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454264488] [2022-01-10 01:10:01,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:01,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:10:01,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:10:01,322 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 01:10:01,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 01:10:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:01,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 01:10:01,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:10:01,729 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 66 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-10 01:10:01,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:10:02,014 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-01-10 01:10:02,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454264488] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 01:10:02,015 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 01:10:02,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-01-10 01:10:02,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224152127] [2022-01-10 01:10:02,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 01:10:02,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 01:10:02,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:02,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 01:10:02,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:10:02,016 INFO L87 Difference]: Start difference. First operand 11125 states and 14509 transitions. Second operand has 17 states, 17 states have (on average 15.117647058823529) internal successors, (257), 16 states have internal predecessors, (257), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37)