/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:56:37,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:56:37,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:56:37,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-31 01:56:37,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:56:37,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:56:37,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:56:37,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:56:37,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:56:37,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:56:37,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:56:37,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:56:37,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:56:37,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:56:37,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:56:37,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:56:37,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 01:56:37,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:56:37,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:56:37,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:56:37,902 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 01:56:37,930 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:56:37,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:56:37,930 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:56:37,931 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:56:37,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:56:37,932 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:56:37,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:56:37,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:56:37,933 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:56:37,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:56:37,934 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:56:37,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:56:37,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:56:37,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:56:37,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:56:37,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:56:37,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:56:37,935 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:56:37,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:56:37,935 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:56:37,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:56:37,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:56:37,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:56:37,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:56:37,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:56:37,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:56:37,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:56:37,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:56:37,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:56:37,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:56:37,937 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:56:37,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:56:37,938 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:56:37,938 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:56:37,938 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:56:37,938 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:56:38,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:56:38,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:56:38,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:56:38,225 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:56:38,225 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:56:38,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-03-31 01:56:39,486 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:56:39,709 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:56:39,710 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-03-31 01:56:39,719 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bb9ed874/4f1d7f33e9484e9bb0a5acc140517b65/FLAG93a3fefd5 [2023-03-31 01:56:39,737 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bb9ed874/4f1d7f33e9484e9bb0a5acc140517b65 [2023-03-31 01:56:39,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:56:39,739 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:56:39,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:56:39,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:56:39,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:56:39,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:56:39" (1/1) ... [2023-03-31 01:56:39,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55c902fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:56:39, skipping insertion in model container [2023-03-31 01:56:39,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:56:39" (1/1) ... [2023-03-31 01:56:39,754 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:56:39,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:56:40,006 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9094,9107] [2023-03-31 01:56:40,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:56:40,069 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:56:40,133 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9094,9107] [2023-03-31 01:56:40,177 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:56:40,197 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:56:40,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:56:40 WrapperNode [2023-03-31 01:56:40,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:56:40,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:56:40,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:56:40,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:56:40,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:56:40" (1/1) ... [2023-03-31 01:56:40,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:56:40" (1/1) ... [2023-03-31 01:56:40,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:56:40" (1/1) ... [2023-03-31 01:56:40,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:56:40" (1/1) ... [2023-03-31 01:56:40,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:56:40" (1/1) ... [2023-03-31 01:56:40,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:56:40" (1/1) ... [2023-03-31 01:56:40,286 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:56:40" (1/1) ... [2023-03-31 01:56:40,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:56:40" (1/1) ... [2023-03-31 01:56:40,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:56:40,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:56:40,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:56:40,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:56:40,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:56:40" (1/1) ... [2023-03-31 01:56:40,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:56:40,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:56:40,331 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) [2023-03-31 01:56:40,352 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 [2023-03-31 01:56:40,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:56:40,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:56:40,372 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:56:40,372 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 01:56:40,372 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:56:40,372 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:56:40,373 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:56:40,373 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:56:40,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:56:40,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:56:40,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:56:40,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-03-31 01:56:40,373 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:56:40,373 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 01:56:40,373 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:56:40,373 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:56:40,374 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:56:40,374 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:56:40,374 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:56:40,374 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-03-31 01:56:40,374 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-03-31 01:56:40,374 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-03-31 01:56:40,374 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:56:40,374 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:56:40,374 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:56:40,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:56:40,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:56:40,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:56:40,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:56:40,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:56:40,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:56:40,552 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:56:40,554 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:56:41,258 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:56:41,272 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:56:41,272 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 01:56:41,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:56:41 BoogieIcfgContainer [2023-03-31 01:56:41,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:56:41,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:56:41,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:56:41,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:56:41,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:56:39" (1/3) ... [2023-03-31 01:56:41,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b44dacb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:56:41, skipping insertion in model container [2023-03-31 01:56:41,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:56:40" (2/3) ... [2023-03-31 01:56:41,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b44dacb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:56:41, skipping insertion in model container [2023-03-31 01:56:41,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:56:41" (3/3) ... [2023-03-31 01:56:41,283 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-03-31 01:56:41,296 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:56:41,296 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:56:41,337 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:56:41,343 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4c6a1b71, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:56:41,343 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:56:41,348 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 176 states have (on average 1.7556818181818181) internal successors, (309), 178 states have internal predecessors, (309), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 01:56:41,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-03-31 01:56:41,358 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:56:41,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:56:41,359 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:56:41,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:56:41,364 INFO L85 PathProgramCache]: Analyzing trace with hash -2082222064, now seen corresponding path program 1 times [2023-03-31 01:56:41,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:56:41,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293090583] [2023-03-31 01:56:41,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:56:41,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:56:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:42,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:56:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:42,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:56:42,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:56:42,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293090583] [2023-03-31 01:56:42,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293090583] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:56:42,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:56:42,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:56:42,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536889483] [2023-03-31 01:56:42,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:56:42,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:56:42,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:56:42,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:56:42,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:56:42,437 INFO L87 Difference]: Start difference. First operand has 183 states, 176 states have (on average 1.7556818181818181) internal successors, (309), 178 states have internal predecessors, (309), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:44,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:56:44,435 INFO L93 Difference]: Finished difference Result 1156 states and 1843 transitions. [2023-03-31 01:56:44,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-03-31 01:56:44,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 94 [2023-03-31 01:56:44,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:56:44,480 INFO L225 Difference]: With dead ends: 1156 [2023-03-31 01:56:44,480 INFO L226 Difference]: Without dead ends: 1028 [2023-03-31 01:56:44,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2023-03-31 01:56:44,486 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 2025 mSDsluCounter, 3934 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2025 SdHoareTripleChecker+Valid, 4662 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:56:44,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2025 Valid, 4662 Invalid, 1117 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-03-31 01:56:44,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2023-03-31 01:56:44,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 271. [2023-03-31 01:56:44,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 267 states have (on average 1.449438202247191) internal successors, (387), 267 states have internal predecessors, (387), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:44,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 390 transitions. [2023-03-31 01:56:44,558 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 390 transitions. Word has length 94 [2023-03-31 01:56:44,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:56:44,558 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 390 transitions. [2023-03-31 01:56:44,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:44,559 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 390 transitions. [2023-03-31 01:56:44,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-03-31 01:56:44,561 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:56:44,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:56:44,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:56:44,562 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:56:44,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:56:44,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1833771758, now seen corresponding path program 1 times [2023-03-31 01:56:44,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:56:44,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269325682] [2023-03-31 01:56:44,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:56:44,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:56:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:44,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:56:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:56:44,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:56:44,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269325682] [2023-03-31 01:56:44,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269325682] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:56:44,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:56:44,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:56:44,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306616932] [2023-03-31 01:56:44,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:56:44,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:56:44,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:56:44,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:56:44,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:56:44,939 INFO L87 Difference]: Start difference. First operand 271 states and 390 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:46,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:56:46,540 INFO L93 Difference]: Finished difference Result 1224 states and 1892 transitions. [2023-03-31 01:56:46,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 01:56:46,540 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-03-31 01:56:46,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:56:46,545 INFO L225 Difference]: With dead ends: 1224 [2023-03-31 01:56:46,545 INFO L226 Difference]: Without dead ends: 1086 [2023-03-31 01:56:46,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-03-31 01:56:46,548 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 1442 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1442 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:56:46,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1442 Valid, 2444 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 01:56:46,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2023-03-31 01:56:46,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 334. [2023-03-31 01:56:46,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 330 states have (on average 1.4757575757575758) internal successors, (487), 330 states have internal predecessors, (487), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:46,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 490 transitions. [2023-03-31 01:56:46,610 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 490 transitions. Word has length 96 [2023-03-31 01:56:46,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:56:46,611 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 490 transitions. [2023-03-31 01:56:46,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:46,611 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 490 transitions. [2023-03-31 01:56:46,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-03-31 01:56:46,616 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:56:46,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:56:46,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:56:46,617 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:56:46,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:56:46,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1843430877, now seen corresponding path program 1 times [2023-03-31 01:56:46,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:56:46,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124416473] [2023-03-31 01:56:46,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:56:46,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:56:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:46,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:56:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:47,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:56:47,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:56:47,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124416473] [2023-03-31 01:56:47,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124416473] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:56:47,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:56:47,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:56:47,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209508919] [2023-03-31 01:56:47,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:56:47,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:56:47,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:56:47,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:56:47,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:56:47,004 INFO L87 Difference]: Start difference. First operand 334 states and 490 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:48,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:56:48,489 INFO L93 Difference]: Finished difference Result 1313 states and 2033 transitions. [2023-03-31 01:56:48,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 01:56:48,490 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-03-31 01:56:48,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:56:48,495 INFO L225 Difference]: With dead ends: 1313 [2023-03-31 01:56:48,495 INFO L226 Difference]: Without dead ends: 1175 [2023-03-31 01:56:48,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-03-31 01:56:48,497 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 1435 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1435 SdHoareTripleChecker+Valid, 1975 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:56:48,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1435 Valid, 1975 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 01:56:48,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2023-03-31 01:56:48,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 517. [2023-03-31 01:56:48,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 513 states have (on average 1.5146198830409356) internal successors, (777), 513 states have internal predecessors, (777), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:48,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 780 transitions. [2023-03-31 01:56:48,567 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 780 transitions. Word has length 96 [2023-03-31 01:56:48,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:56:48,568 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 780 transitions. [2023-03-31 01:56:48,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:48,569 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 780 transitions. [2023-03-31 01:56:48,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-03-31 01:56:48,570 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:56:48,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:56:48,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:56:48,570 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:56:48,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:56:48,571 INFO L85 PathProgramCache]: Analyzing trace with hash -396279027, now seen corresponding path program 1 times [2023-03-31 01:56:48,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:56:48,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062791045] [2023-03-31 01:56:48,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:56:48,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:56:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:48,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:56:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:48,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:56:48,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:56:48,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062791045] [2023-03-31 01:56:48,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062791045] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:56:48,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:56:48,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:56:48,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395195144] [2023-03-31 01:56:48,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:56:48,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:56:48,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:56:48,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:56:48,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:56:48,931 INFO L87 Difference]: Start difference. First operand 517 states and 780 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:50,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:56:50,160 INFO L93 Difference]: Finished difference Result 1397 states and 2166 transitions. [2023-03-31 01:56:50,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 01:56:50,160 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-03-31 01:56:50,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:56:50,166 INFO L225 Difference]: With dead ends: 1397 [2023-03-31 01:56:50,166 INFO L226 Difference]: Without dead ends: 1259 [2023-03-31 01:56:50,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-03-31 01:56:50,168 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 1640 mSDsluCounter, 1387 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:56:50,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 1845 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:56:50,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2023-03-31 01:56:50,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 596. [2023-03-31 01:56:50,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 592 states have (on average 1.5236486486486487) internal successors, (902), 592 states have internal predecessors, (902), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:50,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 905 transitions. [2023-03-31 01:56:50,264 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 905 transitions. Word has length 96 [2023-03-31 01:56:50,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:56:50,265 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 905 transitions. [2023-03-31 01:56:50,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:50,265 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 905 transitions. [2023-03-31 01:56:50,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-03-31 01:56:50,266 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:56:50,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:56:50,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:56:50,266 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:56:50,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:56:50,267 INFO L85 PathProgramCache]: Analyzing trace with hash 754291518, now seen corresponding path program 1 times [2023-03-31 01:56:50,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:56:50,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145088021] [2023-03-31 01:56:50,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:56:50,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:56:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:50,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:56:50,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:50,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:56:50,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:56:50,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145088021] [2023-03-31 01:56:50,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145088021] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:56:50,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:56:50,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:56:50,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807437476] [2023-03-31 01:56:50,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:56:50,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:56:50,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:56:50,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:56:50,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:56:50,599 INFO L87 Difference]: Start difference. First operand 596 states and 905 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:51,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:56:51,742 INFO L93 Difference]: Finished difference Result 1471 states and 2283 transitions. [2023-03-31 01:56:51,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 01:56:51,743 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-03-31 01:56:51,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:56:51,750 INFO L225 Difference]: With dead ends: 1471 [2023-03-31 01:56:51,750 INFO L226 Difference]: Without dead ends: 1333 [2023-03-31 01:56:51,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-03-31 01:56:51,760 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 2053 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2053 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:56:51,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2053 Valid, 1732 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-31 01:56:51,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2023-03-31 01:56:51,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 670. [2023-03-31 01:56:51,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 666 states have (on average 1.53003003003003) internal successors, (1019), 666 states have internal predecessors, (1019), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:51,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1022 transitions. [2023-03-31 01:56:51,872 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1022 transitions. Word has length 96 [2023-03-31 01:56:51,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:56:51,873 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 1022 transitions. [2023-03-31 01:56:51,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:51,873 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1022 transitions. [2023-03-31 01:56:51,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-03-31 01:56:51,874 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:56:51,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:56:51,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:56:51,874 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:56:51,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:56:51,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1680006068, now seen corresponding path program 1 times [2023-03-31 01:56:51,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:56:51,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298064427] [2023-03-31 01:56:51,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:56:51,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:56:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:52,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:56:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:52,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:56:52,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:56:52,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298064427] [2023-03-31 01:56:52,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298064427] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:56:52,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:56:52,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:56:52,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772602342] [2023-03-31 01:56:52,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:56:52,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:56:52,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:56:52,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:56:52,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:56:52,424 INFO L87 Difference]: Start difference. First operand 670 states and 1022 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:53,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:56:53,358 INFO L93 Difference]: Finished difference Result 1422 states and 2213 transitions. [2023-03-31 01:56:53,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 01:56:53,359 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-03-31 01:56:53,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:56:53,363 INFO L225 Difference]: With dead ends: 1422 [2023-03-31 01:56:53,363 INFO L226 Difference]: Without dead ends: 944 [2023-03-31 01:56:53,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2023-03-31 01:56:53,366 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 722 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:56:53,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 962 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 01:56:53,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2023-03-31 01:56:53,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 942. [2023-03-31 01:56:53,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 938 states have (on average 1.5405117270788913) internal successors, (1445), 938 states have internal predecessors, (1445), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:53,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1448 transitions. [2023-03-31 01:56:53,552 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1448 transitions. Word has length 96 [2023-03-31 01:56:53,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:56:53,552 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1448 transitions. [2023-03-31 01:56:53,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:53,553 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1448 transitions. [2023-03-31 01:56:53,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-03-31 01:56:53,554 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:56:53,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:56:53,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:56:53,554 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:56:53,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:56:53,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1436881717, now seen corresponding path program 1 times [2023-03-31 01:56:53,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:56:53,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037697278] [2023-03-31 01:56:53,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:56:53,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:56:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:53,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:56:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:53,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:56:53,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:56:53,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037697278] [2023-03-31 01:56:53,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037697278] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:56:53,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:56:53,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:56:53,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535012727] [2023-03-31 01:56:53,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:56:53,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:56:53,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:56:53,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:56:53,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:56:53,777 INFO L87 Difference]: Start difference. First operand 942 states and 1448 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:54,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:56:54,402 INFO L93 Difference]: Finished difference Result 1698 states and 2638 transitions. [2023-03-31 01:56:54,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:56:54,403 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-03-31 01:56:54,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:56:54,407 INFO L225 Difference]: With dead ends: 1698 [2023-03-31 01:56:54,407 INFO L226 Difference]: Without dead ends: 937 [2023-03-31 01:56:54,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:56:54,411 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 0 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:56:54,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 470 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:56:54,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2023-03-31 01:56:54,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 937. [2023-03-31 01:56:54,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 933 states have (on average 1.5316184351554127) internal successors, (1429), 933 states have internal predecessors, (1429), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:54,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1432 transitions. [2023-03-31 01:56:54,613 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1432 transitions. Word has length 96 [2023-03-31 01:56:54,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:56:54,613 INFO L495 AbstractCegarLoop]: Abstraction has 937 states and 1432 transitions. [2023-03-31 01:56:54,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:54,613 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1432 transitions. [2023-03-31 01:56:54,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-03-31 01:56:54,617 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:56:54,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:56:54,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:56:54,617 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:56:54,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:56:54,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1709749513, now seen corresponding path program 1 times [2023-03-31 01:56:54,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:56:54,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598503822] [2023-03-31 01:56:54,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:56:54,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:56:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:55,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:56:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:55,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:56:55,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:56:55,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598503822] [2023-03-31 01:56:55,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598503822] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:56:55,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:56:55,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:56:55,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130925058] [2023-03-31 01:56:55,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:56:55,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:56:55,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:56:55,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:56:55,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:56:55,034 INFO L87 Difference]: Start difference. First operand 937 states and 1432 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:56,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:56:56,350 INFO L93 Difference]: Finished difference Result 1801 states and 2778 transitions. [2023-03-31 01:56:56,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 01:56:56,351 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-03-31 01:56:56,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:56:56,357 INFO L225 Difference]: With dead ends: 1801 [2023-03-31 01:56:56,357 INFO L226 Difference]: Without dead ends: 1664 [2023-03-31 01:56:56,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-03-31 01:56:56,360 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1537 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:56:56,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 2123 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:56:56,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2023-03-31 01:56:56,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1073. [2023-03-31 01:56:56,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 1069 states have (on average 1.5360149672591206) internal successors, (1642), 1069 states have internal predecessors, (1642), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:56,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1645 transitions. [2023-03-31 01:56:56,590 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1645 transitions. Word has length 96 [2023-03-31 01:56:56,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:56:56,590 INFO L495 AbstractCegarLoop]: Abstraction has 1073 states and 1645 transitions. [2023-03-31 01:56:56,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:56,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1645 transitions. [2023-03-31 01:56:56,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-03-31 01:56:56,592 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:56:56,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:56:56,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:56:56,592 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:56:56,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:56:56,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1195466840, now seen corresponding path program 1 times [2023-03-31 01:56:56,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:56:56,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632624656] [2023-03-31 01:56:56,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:56:56,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:56:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:56,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:56:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:56,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:56:56,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:56:56,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632624656] [2023-03-31 01:56:56,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632624656] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:56:56,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:56:56,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:56:56,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968884024] [2023-03-31 01:56:56,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:56:56,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:56:56,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:56:56,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:56:56,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:56:56,944 INFO L87 Difference]: Start difference. First operand 1073 states and 1645 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:58,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:56:58,191 INFO L93 Difference]: Finished difference Result 1947 states and 3007 transitions. [2023-03-31 01:56:58,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 01:56:58,191 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-03-31 01:56:58,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:56:58,199 INFO L225 Difference]: With dead ends: 1947 [2023-03-31 01:56:58,199 INFO L226 Difference]: Without dead ends: 1810 [2023-03-31 01:56:58,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-03-31 01:56:58,201 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 1600 mSDsluCounter, 2159 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1600 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:56:58,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1600 Valid, 2523 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-31 01:56:58,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2023-03-31 01:56:58,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1224. [2023-03-31 01:56:58,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 1220 states have (on average 1.5401639344262295) internal successors, (1879), 1220 states have internal predecessors, (1879), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:58,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1882 transitions. [2023-03-31 01:56:58,434 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1882 transitions. Word has length 96 [2023-03-31 01:56:58,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:56:58,435 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 1882 transitions. [2023-03-31 01:56:58,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:58,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1882 transitions. [2023-03-31 01:56:58,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-03-31 01:56:58,436 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:56:58,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:56:58,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 01:56:58,436 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:56:58,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:56:58,437 INFO L85 PathProgramCache]: Analyzing trace with hash 538671320, now seen corresponding path program 1 times [2023-03-31 01:56:58,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:56:58,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855315426] [2023-03-31 01:56:58,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:56:58,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:56:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:58,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:56:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:58,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:56:58,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:56:58,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855315426] [2023-03-31 01:56:58,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855315426] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:56:58,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:56:58,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:56:58,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922981758] [2023-03-31 01:56:58,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:56:58,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:56:58,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:56:58,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:56:58,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:56:58,756 INFO L87 Difference]: Start difference. First operand 1224 states and 1882 transitions. Second operand has 6 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:59,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:56:59,468 INFO L93 Difference]: Finished difference Result 2378 states and 3688 transitions. [2023-03-31 01:56:59,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:56:59,468 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2023-03-31 01:56:59,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:56:59,473 INFO L225 Difference]: With dead ends: 2378 [2023-03-31 01:56:59,473 INFO L226 Difference]: Without dead ends: 1224 [2023-03-31 01:56:59,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:56:59,476 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 595 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:56:59,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 174 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:56:59,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2023-03-31 01:56:59,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1224. [2023-03-31 01:56:59,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 1220 states have (on average 1.527049180327869) internal successors, (1863), 1220 states have internal predecessors, (1863), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:59,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1866 transitions. [2023-03-31 01:56:59,702 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1866 transitions. Word has length 97 [2023-03-31 01:56:59,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:56:59,703 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 1866 transitions. [2023-03-31 01:56:59,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:59,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1866 transitions. [2023-03-31 01:56:59,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-03-31 01:56:59,704 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:56:59,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:56:59,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 01:56:59,704 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:56:59,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:56:59,705 INFO L85 PathProgramCache]: Analyzing trace with hash 183072137, now seen corresponding path program 1 times [2023-03-31 01:56:59,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:56:59,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761955694] [2023-03-31 01:56:59,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:56:59,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:56:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:59,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:56:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:59,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:56:59,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:56:59,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761955694] [2023-03-31 01:56:59,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761955694] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:56:59,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:56:59,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:56:59,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170330967] [2023-03-31 01:56:59,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:56:59,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:56:59,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:56:59,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:56:59,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:56:59,980 INFO L87 Difference]: Start difference. First operand 1224 states and 1866 transitions. Second operand has 6 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:00,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:00,780 INFO L93 Difference]: Finished difference Result 2394 states and 3676 transitions. [2023-03-31 01:57:00,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:57:00,780 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-03-31 01:57:00,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:00,785 INFO L225 Difference]: With dead ends: 2394 [2023-03-31 01:57:00,785 INFO L226 Difference]: Without dead ends: 1224 [2023-03-31 01:57:00,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:57:00,788 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 633 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:00,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 142 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:57:00,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2023-03-31 01:57:01,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1224. [2023-03-31 01:57:01,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 1220 states have (on average 1.5139344262295082) internal successors, (1847), 1220 states have internal predecessors, (1847), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:01,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1850 transitions. [2023-03-31 01:57:01,009 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1850 transitions. Word has length 98 [2023-03-31 01:57:01,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:01,009 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 1850 transitions. [2023-03-31 01:57:01,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:01,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1850 transitions. [2023-03-31 01:57:01,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-03-31 01:57:01,010 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:01,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:57:01,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-03-31 01:57:01,011 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:01,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:01,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1323006776, now seen corresponding path program 1 times [2023-03-31 01:57:01,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:01,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778347606] [2023-03-31 01:57:01,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:01,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:01,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:01,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:57:01,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:01,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778347606] [2023-03-31 01:57:01,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778347606] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:01,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:01,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:57:01,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020864471] [2023-03-31 01:57:01,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:01,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:57:01,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:01,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:57:01,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:57:01,307 INFO L87 Difference]: Start difference. First operand 1224 states and 1850 transitions. Second operand has 6 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:02,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:02,126 INFO L93 Difference]: Finished difference Result 2390 states and 3640 transitions. [2023-03-31 01:57:02,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:57:02,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2023-03-31 01:57:02,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:02,131 INFO L225 Difference]: With dead ends: 2390 [2023-03-31 01:57:02,131 INFO L226 Difference]: Without dead ends: 1224 [2023-03-31 01:57:02,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:57:02,134 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 615 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:02,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 150 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:57:02,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2023-03-31 01:57:02,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1224. [2023-03-31 01:57:02,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 1220 states have (on average 1.5008196721311475) internal successors, (1831), 1220 states have internal predecessors, (1831), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:02,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1834 transitions. [2023-03-31 01:57:02,420 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1834 transitions. Word has length 99 [2023-03-31 01:57:02,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:02,420 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 1834 transitions. [2023-03-31 01:57:02,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:02,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1834 transitions. [2023-03-31 01:57:02,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-03-31 01:57:02,421 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:02,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:57:02,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-03-31 01:57:02,422 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:02,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:02,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1981420184, now seen corresponding path program 1 times [2023-03-31 01:57:02,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:02,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631630842] [2023-03-31 01:57:02,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:02,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:02,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:02,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:57:02,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:02,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631630842] [2023-03-31 01:57:02,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631630842] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:02,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:02,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:57:02,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538869686] [2023-03-31 01:57:02,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:02,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:57:02,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:02,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:57:02,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:57:02,727 INFO L87 Difference]: Start difference. First operand 1224 states and 1834 transitions. Second operand has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:03,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:03,488 INFO L93 Difference]: Finished difference Result 2386 states and 3604 transitions. [2023-03-31 01:57:03,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:57:03,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-03-31 01:57:03,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:03,492 INFO L225 Difference]: With dead ends: 2386 [2023-03-31 01:57:03,492 INFO L226 Difference]: Without dead ends: 1224 [2023-03-31 01:57:03,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:57:03,494 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 597 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:03,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 158 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:57:03,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2023-03-31 01:57:03,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1224. [2023-03-31 01:57:03,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 1220 states have (on average 1.4877049180327868) internal successors, (1815), 1220 states have internal predecessors, (1815), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1818 transitions. [2023-03-31 01:57:03,727 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1818 transitions. Word has length 100 [2023-03-31 01:57:03,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:03,727 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 1818 transitions. [2023-03-31 01:57:03,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:03,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1818 transitions. [2023-03-31 01:57:03,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-03-31 01:57:03,729 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:03,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:57:03,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-03-31 01:57:03,729 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:03,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:03,730 INFO L85 PathProgramCache]: Analyzing trace with hash 706184681, now seen corresponding path program 1 times [2023-03-31 01:57:03,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:03,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628287355] [2023-03-31 01:57:03,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:03,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:03,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:04,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:57:04,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:04,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628287355] [2023-03-31 01:57:04,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628287355] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:04,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:04,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:57:04,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267935989] [2023-03-31 01:57:04,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:04,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:57:04,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:04,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:57:04,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:57:04,014 INFO L87 Difference]: Start difference. First operand 1224 states and 1818 transitions. Second operand has 6 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:04,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:04,696 INFO L93 Difference]: Finished difference Result 2382 states and 3568 transitions. [2023-03-31 01:57:04,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:57:04,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2023-03-31 01:57:04,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:04,699 INFO L225 Difference]: With dead ends: 2382 [2023-03-31 01:57:04,699 INFO L226 Difference]: Without dead ends: 1224 [2023-03-31 01:57:04,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:57:04,702 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 579 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:04,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 166 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:57:04,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2023-03-31 01:57:04,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1224. [2023-03-31 01:57:04,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 1220 states have (on average 1.4745901639344263) internal successors, (1799), 1220 states have internal predecessors, (1799), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:04,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1802 transitions. [2023-03-31 01:57:04,917 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1802 transitions. Word has length 101 [2023-03-31 01:57:04,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:04,917 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 1802 transitions. [2023-03-31 01:57:04,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:04,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1802 transitions. [2023-03-31 01:57:04,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-03-31 01:57:04,919 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:04,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:57:04,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-03-31 01:57:04,919 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:04,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:04,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1147710425, now seen corresponding path program 1 times [2023-03-31 01:57:04,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:04,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768785282] [2023-03-31 01:57:04,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:04,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:05,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:05,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:57:05,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:05,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768785282] [2023-03-31 01:57:05,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768785282] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:05,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:05,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:57:05,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064742981] [2023-03-31 01:57:05,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:05,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:57:05,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:05,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:57:05,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:57:05,182 INFO L87 Difference]: Start difference. First operand 1224 states and 1802 transitions. Second operand has 6 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:06,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:06,259 INFO L93 Difference]: Finished difference Result 3510 states and 5221 transitions. [2023-03-31 01:57:06,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:57:06,259 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2023-03-31 01:57:06,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:06,265 INFO L225 Difference]: With dead ends: 3510 [2023-03-31 01:57:06,265 INFO L226 Difference]: Without dead ends: 2336 [2023-03-31 01:57:06,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:57:06,268 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 908 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:06,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 211 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 01:57:06,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2023-03-31 01:57:06,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 2334. [2023-03-31 01:57:06,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2330 states have (on average 1.48068669527897) internal successors, (3450), 2330 states have internal predecessors, (3450), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:06,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3453 transitions. [2023-03-31 01:57:06,770 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3453 transitions. Word has length 102 [2023-03-31 01:57:06,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:06,770 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3453 transitions. [2023-03-31 01:57:06,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:06,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3453 transitions. [2023-03-31 01:57:06,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-03-31 01:57:06,771 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:06,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:57:06,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-03-31 01:57:06,772 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:06,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:06,772 INFO L85 PathProgramCache]: Analyzing trace with hash -707709979, now seen corresponding path program 1 times [2023-03-31 01:57:06,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:06,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050770234] [2023-03-31 01:57:06,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:06,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:07,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:07,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:57:07,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:07,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050770234] [2023-03-31 01:57:07,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050770234] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:07,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:07,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 01:57:07,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473668351] [2023-03-31 01:57:07,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:07,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:57:07,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:07,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:57:07,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:57:07,160 INFO L87 Difference]: Start difference. First operand 2334 states and 3453 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:08,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:08,243 INFO L93 Difference]: Finished difference Result 2860 states and 4194 transitions. [2023-03-31 01:57:08,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:57:08,243 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2023-03-31 01:57:08,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:08,253 INFO L225 Difference]: With dead ends: 2860 [2023-03-31 01:57:08,254 INFO L226 Difference]: Without dead ends: 2858 [2023-03-31 01:57:08,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:57:08,255 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 196 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:08,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 910 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:57:08,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2858 states. [2023-03-31 01:57:08,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2858 to 2334. [2023-03-31 01:57:08,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2330 states have (on average 1.4738197424892703) internal successors, (3434), 2330 states have internal predecessors, (3434), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:08,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3437 transitions. [2023-03-31 01:57:08,717 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3437 transitions. Word has length 103 [2023-03-31 01:57:08,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:08,718 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3437 transitions. [2023-03-31 01:57:08,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:08,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3437 transitions. [2023-03-31 01:57:08,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-03-31 01:57:08,719 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:08,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:57:08,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-03-31 01:57:08,720 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:08,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:08,720 INFO L85 PathProgramCache]: Analyzing trace with hash 710997304, now seen corresponding path program 1 times [2023-03-31 01:57:08,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:08,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644746052] [2023-03-31 01:57:08,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:08,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:09,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:09,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:57:09,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:09,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644746052] [2023-03-31 01:57:09,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644746052] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:09,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:09,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:57:09,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630387346] [2023-03-31 01:57:09,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:09,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 01:57:09,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:09,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 01:57:09,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:57:09,252 INFO L87 Difference]: Start difference. First operand 2334 states and 3437 transitions. Second operand has 11 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:11,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:11,468 INFO L93 Difference]: Finished difference Result 6751 states and 9967 transitions. [2023-03-31 01:57:11,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-03-31 01:57:11,469 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 104 [2023-03-31 01:57:11,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:11,483 INFO L225 Difference]: With dead ends: 6751 [2023-03-31 01:57:11,484 INFO L226 Difference]: Without dead ends: 4580 [2023-03-31 01:57:11,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:57:11,488 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 1909 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1909 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:11,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1909 Valid, 447 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 01:57:11,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4580 states. [2023-03-31 01:57:12,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4580 to 2334. [2023-03-31 01:57:12,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2330 states have (on average 1.471244635193133) internal successors, (3428), 2330 states have internal predecessors, (3428), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:12,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3431 transitions. [2023-03-31 01:57:12,091 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3431 transitions. Word has length 104 [2023-03-31 01:57:12,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:12,091 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3431 transitions. [2023-03-31 01:57:12,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:12,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3431 transitions. [2023-03-31 01:57:12,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-03-31 01:57:12,093 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:12,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:57:12,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-03-31 01:57:12,093 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:12,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:12,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1358961341, now seen corresponding path program 1 times [2023-03-31 01:57:12,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:12,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128419280] [2023-03-31 01:57:12,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:12,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:12,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:12,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:57:12,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:12,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128419280] [2023-03-31 01:57:12,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128419280] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:12,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:12,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:57:12,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581638102] [2023-03-31 01:57:12,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:12,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 01:57:12,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:12,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 01:57:12,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:57:12,604 INFO L87 Difference]: Start difference. First operand 2334 states and 3431 transitions. Second operand has 11 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:14,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:14,537 INFO L93 Difference]: Finished difference Result 5692 states and 8378 transitions. [2023-03-31 01:57:14,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-03-31 01:57:14,537 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 104 [2023-03-31 01:57:14,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:14,546 INFO L225 Difference]: With dead ends: 5692 [2023-03-31 01:57:14,546 INFO L226 Difference]: Without dead ends: 3506 [2023-03-31 01:57:14,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:57:14,551 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 1956 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1956 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:14,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1956 Valid, 441 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 01:57:14,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3506 states. [2023-03-31 01:57:15,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3506 to 2334. [2023-03-31 01:57:15,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2330 states have (on average 1.4699570815450644) internal successors, (3425), 2330 states have internal predecessors, (3425), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:15,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3428 transitions. [2023-03-31 01:57:15,353 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3428 transitions. Word has length 104 [2023-03-31 01:57:15,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:15,354 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3428 transitions. [2023-03-31 01:57:15,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:15,354 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3428 transitions. [2023-03-31 01:57:15,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-03-31 01:57:15,355 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:15,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:57:15,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-03-31 01:57:15,355 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:15,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:15,356 INFO L85 PathProgramCache]: Analyzing trace with hash 666482574, now seen corresponding path program 1 times [2023-03-31 01:57:15,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:15,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828337430] [2023-03-31 01:57:15,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:15,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:15,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:15,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:57:15,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:15,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828337430] [2023-03-31 01:57:15,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828337430] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:15,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:15,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:57:15,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736062762] [2023-03-31 01:57:15,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:15,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:57:15,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:15,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:57:15,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:57:15,791 INFO L87 Difference]: Start difference. First operand 2334 states and 3428 transitions. Second operand has 10 states, 9 states have (on average 11.222222222222221) internal successors, (101), 8 states have internal predecessors, (101), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:17,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:17,753 INFO L93 Difference]: Finished difference Result 6500 states and 9593 transitions. [2023-03-31 01:57:17,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-03-31 01:57:17,754 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.222222222222221) internal successors, (101), 8 states have internal predecessors, (101), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 104 [2023-03-31 01:57:17,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:17,762 INFO L225 Difference]: With dead ends: 6500 [2023-03-31 01:57:17,762 INFO L226 Difference]: Without dead ends: 4375 [2023-03-31 01:57:17,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2023-03-31 01:57:17,765 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 1318 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:17,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1318 Valid, 390 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:57:17,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4375 states. [2023-03-31 01:57:18,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4375 to 2334. [2023-03-31 01:57:18,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2330 states have (on average 1.4695278969957082) internal successors, (3424), 2330 states have internal predecessors, (3424), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:18,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3427 transitions. [2023-03-31 01:57:18,525 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3427 transitions. Word has length 104 [2023-03-31 01:57:18,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:18,526 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3427 transitions. [2023-03-31 01:57:18,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.222222222222221) internal successors, (101), 8 states have internal predecessors, (101), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:18,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3427 transitions. [2023-03-31 01:57:18,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-03-31 01:57:18,527 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:18,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:57:18,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-03-31 01:57:18,527 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:18,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:18,528 INFO L85 PathProgramCache]: Analyzing trace with hash -2039201714, now seen corresponding path program 1 times [2023-03-31 01:57:18,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:18,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713402570] [2023-03-31 01:57:18,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:18,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:18,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:18,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:57:18,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:18,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713402570] [2023-03-31 01:57:18,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713402570] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:18,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:18,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:57:18,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186824984] [2023-03-31 01:57:18,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:18,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 01:57:18,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:18,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 01:57:18,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:57:18,940 INFO L87 Difference]: Start difference. First operand 2334 states and 3427 transitions. Second operand has 11 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:21,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:21,213 INFO L93 Difference]: Finished difference Result 6631 states and 9765 transitions. [2023-03-31 01:57:21,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-03-31 01:57:21,214 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2023-03-31 01:57:21,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:21,220 INFO L225 Difference]: With dead ends: 6631 [2023-03-31 01:57:21,221 INFO L226 Difference]: Without dead ends: 4535 [2023-03-31 01:57:21,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:57:21,225 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 1105 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:21,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 458 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 01:57:21,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4535 states. [2023-03-31 01:57:22,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4535 to 2334. [2023-03-31 01:57:22,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2330 states have (on average 1.4648068669527896) internal successors, (3413), 2330 states have internal predecessors, (3413), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:22,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3416 transitions. [2023-03-31 01:57:22,007 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3416 transitions. Word has length 105 [2023-03-31 01:57:22,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:22,008 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3416 transitions. [2023-03-31 01:57:22,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:22,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3416 transitions. [2023-03-31 01:57:22,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-03-31 01:57:22,009 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:22,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:57:22,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-03-31 01:57:22,010 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:22,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:22,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1802025570, now seen corresponding path program 1 times [2023-03-31 01:57:22,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:22,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36174229] [2023-03-31 01:57:22,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:22,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:22,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:22,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:57:22,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:22,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36174229] [2023-03-31 01:57:22,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36174229] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:22,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:22,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:57:22,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869576969] [2023-03-31 01:57:22,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:22,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 01:57:22,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:22,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 01:57:22,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:57:22,457 INFO L87 Difference]: Start difference. First operand 2334 states and 3416 transitions. Second operand has 11 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:24,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:24,917 INFO L93 Difference]: Finished difference Result 6531 states and 9594 transitions. [2023-03-31 01:57:24,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-03-31 01:57:24,918 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 106 [2023-03-31 01:57:24,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:24,926 INFO L225 Difference]: With dead ends: 6531 [2023-03-31 01:57:24,927 INFO L226 Difference]: Without dead ends: 4490 [2023-03-31 01:57:24,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:57:24,931 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 1319 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1319 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:24,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1319 Valid, 481 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 01:57:24,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4490 states. [2023-03-31 01:57:25,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4490 to 2334. [2023-03-31 01:57:25,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2330 states have (on average 1.4592274678111588) internal successors, (3400), 2330 states have internal predecessors, (3400), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:25,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3403 transitions. [2023-03-31 01:57:25,810 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3403 transitions. Word has length 106 [2023-03-31 01:57:25,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:25,810 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3403 transitions. [2023-03-31 01:57:25,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:25,810 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3403 transitions. [2023-03-31 01:57:25,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-03-31 01:57:25,811 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:25,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:57:25,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-03-31 01:57:25,811 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:25,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:25,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1157707966, now seen corresponding path program 1 times [2023-03-31 01:57:25,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:25,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501637545] [2023-03-31 01:57:25,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:25,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:26,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:26,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:57:26,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:26,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501637545] [2023-03-31 01:57:26,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501637545] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:26,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:26,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-03-31 01:57:26,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044293636] [2023-03-31 01:57:26,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:26,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-03-31 01:57:26,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:26,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-03-31 01:57:26,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-03-31 01:57:26,648 INFO L87 Difference]: Start difference. First operand 2334 states and 3403 transitions. Second operand has 14 states, 13 states have (on average 8.0) internal successors, (104), 12 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)