/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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:05:55,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:05:55,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:05:55,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:05:55,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:05:55,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:05:55,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:05:55,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:05:55,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:05:55,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:05:55,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:05:55,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:05:55,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:05:55,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:05:55,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:05:55,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:05:55,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:05:55,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:05:55,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:05:55,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:05:55,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:05:55,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:05:55,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:05:55,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:05:55,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 06:05:56,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:05:56,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:05:56,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:05:56,007 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 [2023-04-02 06:05:56,048 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:05:56,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:05:56,053 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:05:56,053 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:05:56,054 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:05:56,055 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:05:56,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:05:56,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:05:56,055 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:05:56,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:05:56,061 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:05:56,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:05:56,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:05:56,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:05:56,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:05:56,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:05:56,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:05:56,062 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:05:56,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:05:56,063 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:05:56,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:05:56,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:05:56,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:05:56,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:05:56,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:05:56,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:05:56,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:05:56,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:05:56,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:05:56,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:05:56,069 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:05:56,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:05:56,069 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:05:56,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:05:56,070 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:05:56,070 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:05:56,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:05:56,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:05:56,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:05:56,712 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:05:56,712 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:05:56,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2023-04-02 06:05:59,299 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:05:59,978 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:05:59,978 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2023-04-02 06:06:00,036 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/765236221/6ee7201707c54f48b14565d92d44e385/FLAG5e6acea18 [2023-04-02 06:06:00,064 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/765236221/6ee7201707c54f48b14565d92d44e385 [2023-04-02 06:06:00,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:06:00,072 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:06:00,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:06:00,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:06:00,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:06:00,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:06:00" (1/1) ... [2023-04-02 06:06:00,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a07abe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:06:00, skipping insertion in model container [2023-04-02 06:06:00,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:06:00" (1/1) ... [2023-04-02 06:06:00,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:06:00,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:06:00,727 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c[12887,12900] [2023-04-02 06:06:00,981 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:06:01,044 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:06:01,228 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c[12887,12900] [2023-04-02 06:06:01,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:06:01,398 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:06:01,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:06:01 WrapperNode [2023-04-02 06:06:01,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:06:01,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:06:01,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:06:01,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:06:01,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:06:01" (1/1) ... [2023-04-02 06:06:01,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:06:01" (1/1) ... [2023-04-02 06:06:01,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:06:01" (1/1) ... [2023-04-02 06:06:01,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:06:01" (1/1) ... [2023-04-02 06:06:01,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:06:01" (1/1) ... [2023-04-02 06:06:01,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:06:01" (1/1) ... [2023-04-02 06:06:01,626 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:06:01" (1/1) ... [2023-04-02 06:06:01,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:06:01" (1/1) ... [2023-04-02 06:06:01,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:06:01,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:06:01,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:06:01,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:06:01,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:06:01" (1/1) ... [2023-04-02 06:06:01,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:06:01,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:06:01,899 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) [2023-04-02 06:06:01,953 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 [2023-04-02 06:06:02,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:06:02,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:06:02,113 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:06:02,113 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:06:02,113 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:06:02,113 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:06:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:06:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:06:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:06:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:06:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:06:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:06:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:06:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:06:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:06:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:06:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:06:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:06:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:06:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:06:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:06:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:06:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:06:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:06:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:06:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:06:02,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:06:02,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:06:02,470 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:06:02,472 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:06:04,717 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:06:04,741 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:06:04,742 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:06:04,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:06:04 BoogieIcfgContainer [2023-04-02 06:06:04,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:06:04,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:06:04,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:06:04,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:06:04,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:06:00" (1/3) ... [2023-04-02 06:06:04,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1150544f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:06:04, skipping insertion in model container [2023-04-02 06:06:04,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:06:01" (2/3) ... [2023-04-02 06:06:04,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1150544f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:06:04, skipping insertion in model container [2023-04-02 06:06:04,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:06:04" (3/3) ... [2023-04-02 06:06:04,782 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2023-04-02 06:06:04,822 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:06:04,822 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 06:06:04,992 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:06:04,998 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;@2fc4d27f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:06:05,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 06:06:05,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 451 states, 423 states have (on average 1.6406619385342789) internal successors, (694), 446 states have internal predecessors, (694), 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) [2023-04-02 06:06:05,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-04-02 06:06:05,084 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:05,085 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, 1, 1, 1, 1] [2023-04-02 06:06:05,085 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:06:05,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:05,091 INFO L85 PathProgramCache]: Analyzing trace with hash -2071131911, now seen corresponding path program 1 times [2023-04-02 06:06:05,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:05,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132383431] [2023-04-02 06:06:05,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:05,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:06,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:07,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:06:07,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:07,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132383431] [2023-04-02 06:06:07,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132383431] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:07,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:07,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:06:07,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822579046] [2023-04-02 06:06:07,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:07,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 06:06:07,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:07,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 06:06:07,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:06:07,173 INFO L87 Difference]: Start difference. First operand has 451 states, 423 states have (on average 1.6406619385342789) internal successors, (694), 446 states have internal predecessors, (694), 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 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 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) [2023-04-02 06:06:11,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:06:11,213 INFO L93 Difference]: Finished difference Result 854 states and 1346 transitions. [2023-04-02 06:06:11,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 06:06:11,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 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 111 [2023-04-02 06:06:11,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:06:11,251 INFO L225 Difference]: With dead ends: 854 [2023-04-02 06:06:11,251 INFO L226 Difference]: Without dead ends: 425 [2023-04-02 06:06:11,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:06:11,285 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 131 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1913 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:06:11,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 1913 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-04-02 06:06:11,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2023-04-02 06:06:11,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2023-04-02 06:06:11,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 421 states have (on average 1.5605700712589075) internal successors, (657), 421 states have internal predecessors, (657), 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) [2023-04-02 06:06:11,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 660 transitions. [2023-04-02 06:06:11,507 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 660 transitions. Word has length 111 [2023-04-02 06:06:11,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:06:11,508 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 660 transitions. [2023-04-02 06:06:11,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 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) [2023-04-02 06:06:11,508 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 660 transitions. [2023-04-02 06:06:11,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-02 06:06:11,519 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:11,519 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:06:11,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:06:11,520 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:06:11,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:11,533 INFO L85 PathProgramCache]: Analyzing trace with hash 2121618456, now seen corresponding path program 1 times [2023-04-02 06:06:11,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:11,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155863613] [2023-04-02 06:06:11,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:11,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:12,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:12,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:06:12,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:12,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155863613] [2023-04-02 06:06:12,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155863613] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:12,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:12,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:06:12,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44803998] [2023-04-02 06:06:12,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:12,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:06:12,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:12,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:06:12,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:06:12,651 INFO L87 Difference]: Start difference. First operand 425 states and 660 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 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) [2023-04-02 06:06:15,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:06:15,213 INFO L93 Difference]: Finished difference Result 1049 states and 1655 transitions. [2023-04-02 06:06:15,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:06:15,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 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 134 [2023-04-02 06:06:15,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:06:15,217 INFO L225 Difference]: With dead ends: 1049 [2023-04-02 06:06:15,218 INFO L226 Difference]: Without dead ends: 669 [2023-04-02 06:06:15,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:06:15,220 INFO L413 NwaCegarLoop]: 644 mSDtfsCounter, 477 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:06:15,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 1170 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-02 06:06:15,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2023-04-02 06:06:15,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 667. [2023-04-02 06:06:15,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 663 states have (on average 1.5671191553544495) internal successors, (1039), 663 states have internal predecessors, (1039), 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) [2023-04-02 06:06:15,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1042 transitions. [2023-04-02 06:06:15,382 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1042 transitions. Word has length 134 [2023-04-02 06:06:15,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:06:15,389 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 1042 transitions. [2023-04-02 06:06:15,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 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) [2023-04-02 06:06:15,389 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1042 transitions. [2023-04-02 06:06:15,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-04-02 06:06:15,406 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:15,407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:06:15,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:06:15,407 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:06:15,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:15,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1795947526, now seen corresponding path program 1 times [2023-04-02 06:06:15,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:15,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530916911] [2023-04-02 06:06:15,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:15,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:15,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:15,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:06:15,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:15,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530916911] [2023-04-02 06:06:15,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530916911] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:15,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:15,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:06:15,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696164036] [2023-04-02 06:06:15,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:15,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:06:15,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:15,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:06:15,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:06:15,770 INFO L87 Difference]: Start difference. First operand 667 states and 1042 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 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) [2023-04-02 06:06:18,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:06:18,275 INFO L93 Difference]: Finished difference Result 1683 states and 2656 transitions. [2023-04-02 06:06:18,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:06:18,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 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 137 [2023-04-02 06:06:18,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:06:18,288 INFO L225 Difference]: With dead ends: 1683 [2023-04-02 06:06:18,293 INFO L226 Difference]: Without dead ends: 1074 [2023-04-02 06:06:18,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:06:18,300 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 462 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:06:18,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 1135 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-02 06:06:18,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2023-04-02 06:06:18,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1072. [2023-04-02 06:06:18,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1068 states have (on average 1.5674157303370786) internal successors, (1674), 1068 states have internal predecessors, (1674), 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) [2023-04-02 06:06:18,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1677 transitions. [2023-04-02 06:06:18,471 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1677 transitions. Word has length 137 [2023-04-02 06:06:18,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:06:18,473 INFO L495 AbstractCegarLoop]: Abstraction has 1072 states and 1677 transitions. [2023-04-02 06:06:18,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 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) [2023-04-02 06:06:18,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1677 transitions. [2023-04-02 06:06:18,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-04-02 06:06:18,485 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:18,485 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:06:18,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:06:18,486 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:06:18,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:18,487 INFO L85 PathProgramCache]: Analyzing trace with hash -671947435, now seen corresponding path program 1 times [2023-04-02 06:06:18,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:18,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249261916] [2023-04-02 06:06:18,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:18,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:19,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:19,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:06:19,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:19,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249261916] [2023-04-02 06:06:19,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249261916] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:19,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:19,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:06:19,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943011080] [2023-04-02 06:06:19,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:19,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:06:19,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:19,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:06:19,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:06:19,066 INFO L87 Difference]: Start difference. First operand 1072 states and 1677 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 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) [2023-04-02 06:06:21,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:06:21,878 INFO L93 Difference]: Finished difference Result 2722 states and 4280 transitions. [2023-04-02 06:06:21,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:06:21,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 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 140 [2023-04-02 06:06:21,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:06:21,894 INFO L225 Difference]: With dead ends: 2722 [2023-04-02 06:06:21,894 INFO L226 Difference]: Without dead ends: 1721 [2023-04-02 06:06:21,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:06:21,911 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 447 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:06:21,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 1100 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-02 06:06:21,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2023-04-02 06:06:22,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1719. [2023-04-02 06:06:22,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1715 states have (on average 1.5603498542274052) internal successors, (2676), 1715 states have internal predecessors, (2676), 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) [2023-04-02 06:06:22,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2679 transitions. [2023-04-02 06:06:22,305 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2679 transitions. Word has length 140 [2023-04-02 06:06:22,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:06:22,313 INFO L495 AbstractCegarLoop]: Abstraction has 1719 states and 2679 transitions. [2023-04-02 06:06:22,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 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) [2023-04-02 06:06:22,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2679 transitions. [2023-04-02 06:06:22,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-04-02 06:06:22,323 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:22,323 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:06:22,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:06:22,323 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:06:22,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:22,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1491393171, now seen corresponding path program 1 times [2023-04-02 06:06:22,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:22,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208136595] [2023-04-02 06:06:22,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:22,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:22,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:22,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:06:22,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:22,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208136595] [2023-04-02 06:06:22,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208136595] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:22,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:22,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:06:22,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63221224] [2023-04-02 06:06:22,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:22,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:06:22,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:22,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:06:22,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:06:22,822 INFO L87 Difference]: Start difference. First operand 1719 states and 2679 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 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) [2023-04-02 06:06:26,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:06:26,481 INFO L93 Difference]: Finished difference Result 4319 states and 6733 transitions. [2023-04-02 06:06:26,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:06:26,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 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 143 [2023-04-02 06:06:26,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:06:26,494 INFO L225 Difference]: With dead ends: 4319 [2023-04-02 06:06:26,494 INFO L226 Difference]: Without dead ends: 2684 [2023-04-02 06:06:26,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:06:26,507 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 432 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:06:26,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 1065 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-02 06:06:26,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2023-04-02 06:06:27,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 2682. [2023-04-02 06:06:27,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2682 states, 2678 states have (on average 1.5436893203883495) internal successors, (4134), 2678 states have internal predecessors, (4134), 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) [2023-04-02 06:06:27,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 4137 transitions. [2023-04-02 06:06:27,359 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 4137 transitions. Word has length 143 [2023-04-02 06:06:27,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:06:27,360 INFO L495 AbstractCegarLoop]: Abstraction has 2682 states and 4137 transitions. [2023-04-02 06:06:27,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 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) [2023-04-02 06:06:27,360 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 4137 transitions. [2023-04-02 06:06:27,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-04-02 06:06:27,381 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:27,382 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:06:27,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:06:27,382 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:06:27,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:27,383 INFO L85 PathProgramCache]: Analyzing trace with hash 458355798, now seen corresponding path program 1 times [2023-04-02 06:06:27,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:27,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654379566] [2023-04-02 06:06:27,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:27,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:28,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:28,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:06:28,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:28,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654379566] [2023-04-02 06:06:28,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654379566] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:28,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:28,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:06:28,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514120655] [2023-04-02 06:06:28,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:28,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:06:28,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:28,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:06:28,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:06:28,066 INFO L87 Difference]: Start difference. First operand 2682 states and 4137 transitions. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 6 states have internal predecessors, (143), 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) [2023-04-02 06:06:32,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:06:32,084 INFO L93 Difference]: Finished difference Result 14021 states and 21623 transitions. [2023-04-02 06:06:32,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:06:32,085 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 6 states have internal predecessors, (143), 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 146 [2023-04-02 06:06:32,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:06:32,147 INFO L225 Difference]: With dead ends: 14021 [2023-04-02 06:06:32,147 INFO L226 Difference]: Without dead ends: 11427 [2023-04-02 06:06:32,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:06:32,161 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 4645 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4645 SdHoareTripleChecker+Valid, 2432 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:06:32,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4645 Valid, 2432 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-02 06:06:32,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11427 states. [2023-04-02 06:06:33,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11427 to 5192. [2023-04-02 06:06:33,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5192 states, 5188 states have (on average 1.5210100231303008) internal successors, (7891), 5188 states have internal predecessors, (7891), 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) [2023-04-02 06:06:33,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5192 states to 5192 states and 7894 transitions. [2023-04-02 06:06:33,528 INFO L78 Accepts]: Start accepts. Automaton has 5192 states and 7894 transitions. Word has length 146 [2023-04-02 06:06:33,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:06:33,529 INFO L495 AbstractCegarLoop]: Abstraction has 5192 states and 7894 transitions. [2023-04-02 06:06:33,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 6 states have internal predecessors, (143), 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) [2023-04-02 06:06:33,529 INFO L276 IsEmpty]: Start isEmpty. Operand 5192 states and 7894 transitions. [2023-04-02 06:06:33,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-04-02 06:06:33,561 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:33,561 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:06:33,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:06:33,562 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:06:33,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:33,565 INFO L85 PathProgramCache]: Analyzing trace with hash 301892586, now seen corresponding path program 1 times [2023-04-02 06:06:33,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:33,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308646669] [2023-04-02 06:06:33,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:33,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:33,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:33,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:34,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:06:34,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:34,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308646669] [2023-04-02 06:06:34,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308646669] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:34,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:34,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:06:34,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139902048] [2023-04-02 06:06:34,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:34,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:06:34,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:34,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:06:34,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:06:34,011 INFO L87 Difference]: Start difference. First operand 5192 states and 7894 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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) [2023-04-02 06:06:36,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:06:36,892 INFO L93 Difference]: Finished difference Result 14346 states and 21728 transitions. [2023-04-02 06:06:36,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:06:36,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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 150 [2023-04-02 06:06:36,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:06:36,943 INFO L225 Difference]: With dead ends: 14346 [2023-04-02 06:06:36,944 INFO L226 Difference]: Without dead ends: 9595 [2023-04-02 06:06:36,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:06:36,957 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 449 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:06:36,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1163 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 06:06:36,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9595 states. [2023-04-02 06:06:38,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9595 to 9593. [2023-04-02 06:06:38,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9593 states, 9589 states have (on average 1.50130357701533) internal successors, (14396), 9589 states have internal predecessors, (14396), 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) [2023-04-02 06:06:38,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9593 states to 9593 states and 14399 transitions. [2023-04-02 06:06:38,762 INFO L78 Accepts]: Start accepts. Automaton has 9593 states and 14399 transitions. Word has length 150 [2023-04-02 06:06:38,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:06:38,770 INFO L495 AbstractCegarLoop]: Abstraction has 9593 states and 14399 transitions. [2023-04-02 06:06:38,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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) [2023-04-02 06:06:38,770 INFO L276 IsEmpty]: Start isEmpty. Operand 9593 states and 14399 transitions. [2023-04-02 06:06:38,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-04-02 06:06:38,803 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:38,803 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:06:38,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:06:38,803 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:06:38,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:38,804 INFO L85 PathProgramCache]: Analyzing trace with hash 2119910163, now seen corresponding path program 1 times [2023-04-02 06:06:38,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:38,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846677250] [2023-04-02 06:06:38,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:38,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:39,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:39,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:06:39,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:39,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846677250] [2023-04-02 06:06:39,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846677250] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:39,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:39,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:06:39,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114696300] [2023-04-02 06:06:39,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:39,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:06:39,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:39,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:06:39,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:06:39,238 INFO L87 Difference]: Start difference. First operand 9593 states and 14399 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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) [2023-04-02 06:06:43,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:06:43,968 INFO L93 Difference]: Finished difference Result 27052 states and 40433 transitions. [2023-04-02 06:06:43,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:06:43,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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 150 [2023-04-02 06:06:43,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:06:44,081 INFO L225 Difference]: With dead ends: 27052 [2023-04-02 06:06:44,082 INFO L226 Difference]: Without dead ends: 17844 [2023-04-02 06:06:44,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:06:44,109 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 468 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:06:44,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1163 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-02 06:06:44,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17844 states. [2023-04-02 06:06:46,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17844 to 17842. [2023-04-02 06:06:46,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17842 states, 17838 states have (on average 1.4803789662518219) internal successors, (26407), 17838 states have internal predecessors, (26407), 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) [2023-04-02 06:06:46,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17842 states to 17842 states and 26410 transitions. [2023-04-02 06:06:46,839 INFO L78 Accepts]: Start accepts. Automaton has 17842 states and 26410 transitions. Word has length 150 [2023-04-02 06:06:46,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:06:46,839 INFO L495 AbstractCegarLoop]: Abstraction has 17842 states and 26410 transitions. [2023-04-02 06:06:46,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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) [2023-04-02 06:06:46,840 INFO L276 IsEmpty]: Start isEmpty. Operand 17842 states and 26410 transitions. [2023-04-02 06:06:46,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-04-02 06:06:46,962 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:46,963 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:06:46,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:06:46,963 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:06:46,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:46,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1030831086, now seen corresponding path program 1 times [2023-04-02 06:06:46,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:46,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489207823] [2023-04-02 06:06:46,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:46,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:47,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:47,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:06:47,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:47,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489207823] [2023-04-02 06:06:47,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489207823] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:47,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:47,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:06:47,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716009532] [2023-04-02 06:06:47,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:47,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:06:47,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:47,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:06:47,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:06:47,358 INFO L87 Difference]: Start difference. First operand 17842 states and 26410 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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) [2023-04-02 06:06:53,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:06:53,354 INFO L93 Difference]: Finished difference Result 50673 states and 74638 transitions. [2023-04-02 06:06:53,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:06:53,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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 150 [2023-04-02 06:06:53,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:06:53,471 INFO L225 Difference]: With dead ends: 50673 [2023-04-02 06:06:53,471 INFO L226 Difference]: Without dead ends: 33151 [2023-04-02 06:06:53,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:06:53,527 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 487 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:06:53,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 1163 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-02 06:06:53,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33151 states. [2023-04-02 06:06:57,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33151 to 33149. [2023-04-02 06:06:58,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33149 states, 33145 states have (on average 1.4571730276059738) internal successors, (48298), 33145 states have internal predecessors, (48298), 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) [2023-04-02 06:06:58,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33149 states to 33149 states and 48301 transitions. [2023-04-02 06:06:58,182 INFO L78 Accepts]: Start accepts. Automaton has 33149 states and 48301 transitions. Word has length 150 [2023-04-02 06:06:58,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:06:58,182 INFO L495 AbstractCegarLoop]: Abstraction has 33149 states and 48301 transitions. [2023-04-02 06:06:58,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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) [2023-04-02 06:06:58,183 INFO L276 IsEmpty]: Start isEmpty. Operand 33149 states and 48301 transitions. [2023-04-02 06:06:58,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-04-02 06:06:58,297 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:58,297 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:06:58,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:06:58,298 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:06:58,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:58,298 INFO L85 PathProgramCache]: Analyzing trace with hash 815982757, now seen corresponding path program 1 times [2023-04-02 06:06:58,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:58,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144193675] [2023-04-02 06:06:58,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:58,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:58,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:58,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:06:58,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:58,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144193675] [2023-04-02 06:06:58,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144193675] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:58,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:58,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:06:58,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706922716] [2023-04-02 06:06:58,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:58,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:06:58,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:58,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:06:58,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:06:58,623 INFO L87 Difference]: Start difference. First operand 33149 states and 48301 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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) [2023-04-02 06:07:06,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:07:06,739 INFO L93 Difference]: Finished difference Result 93950 states and 136149 transitions. [2023-04-02 06:07:06,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:07:06,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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 150 [2023-04-02 06:07:06,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:07:07,344 INFO L225 Difference]: With dead ends: 93950 [2023-04-02 06:07:07,344 INFO L226 Difference]: Without dead ends: 61072 [2023-04-02 06:07:07,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:07:07,451 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 506 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:07:07,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 1165 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-02 06:07:07,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61072 states. [2023-04-02 06:07:14,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61072 to 61070. [2023-04-02 06:07:14,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61070 states, 61066 states have (on average 1.4328267775849082) internal successors, (87497), 61066 states have internal predecessors, (87497), 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) [2023-04-02 06:07:14,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61070 states to 61070 states and 87500 transitions. [2023-04-02 06:07:14,523 INFO L78 Accepts]: Start accepts. Automaton has 61070 states and 87500 transitions. Word has length 150 [2023-04-02 06:07:14,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:07:14,524 INFO L495 AbstractCegarLoop]: Abstraction has 61070 states and 87500 transitions. [2023-04-02 06:07:14,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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) [2023-04-02 06:07:14,524 INFO L276 IsEmpty]: Start isEmpty. Operand 61070 states and 87500 transitions. [2023-04-02 06:07:14,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-04-02 06:07:14,656 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:07:14,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:07:14,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:07:14,656 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:07:14,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:07:14,657 INFO L85 PathProgramCache]: Analyzing trace with hash 141910898, now seen corresponding path program 1 times [2023-04-02 06:07:14,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:07:14,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991660833] [2023-04-02 06:07:14,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:07:14,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:07:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:15,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:07:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:15,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:07:15,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:07:15,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991660833] [2023-04-02 06:07:15,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991660833] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:07:15,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:07:15,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:07:15,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773996002] [2023-04-02 06:07:15,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:07:15,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:07:15,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:07:15,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:07:15,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:07:15,227 INFO L87 Difference]: Start difference. First operand 61070 states and 87500 transitions. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 6 states have internal predecessors, (148), 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) [2023-04-02 06:07:23,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:07:23,758 INFO L93 Difference]: Finished difference Result 100183 states and 142159 transitions. [2023-04-02 06:07:23,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:07:23,759 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 6 states have internal predecessors, (148), 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 151 [2023-04-02 06:07:23,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:07:23,879 INFO L225 Difference]: With dead ends: 100183 [2023-04-02 06:07:23,880 INFO L226 Difference]: Without dead ends: 61276 [2023-04-02 06:07:23,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:07:23,935 INFO L413 NwaCegarLoop]: 1142 mSDtfsCounter, 2149 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2149 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:07:23,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2149 Valid, 2584 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-02 06:07:23,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61276 states. [2023-04-02 06:07:29,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61276 to 59632. [2023-04-02 06:07:29,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59632 states, 59628 states have (on average 1.4092205004360367) internal successors, (84029), 59628 states have internal predecessors, (84029), 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) [2023-04-02 06:07:29,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59632 states to 59632 states and 84032 transitions. [2023-04-02 06:07:29,864 INFO L78 Accepts]: Start accepts. Automaton has 59632 states and 84032 transitions. Word has length 151 [2023-04-02 06:07:29,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:07:29,865 INFO L495 AbstractCegarLoop]: Abstraction has 59632 states and 84032 transitions. [2023-04-02 06:07:29,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 6 states have internal predecessors, (148), 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) [2023-04-02 06:07:29,865 INFO L276 IsEmpty]: Start isEmpty. Operand 59632 states and 84032 transitions. [2023-04-02 06:07:30,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-04-02 06:07:30,121 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:07:30,121 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:07:30,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:07:30,122 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:07:30,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:07:30,122 INFO L85 PathProgramCache]: Analyzing trace with hash -124712954, now seen corresponding path program 1 times [2023-04-02 06:07:30,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:07:30,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126918001] [2023-04-02 06:07:30,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:07:30,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:07:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:30,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:07:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:07:30,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:07:30,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126918001] [2023-04-02 06:07:30,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126918001] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:07:30,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:07:30,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:07:30,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537740827] [2023-04-02 06:07:30,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:07:30,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:07:30,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:07:30,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:07:30,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:07:30,509 INFO L87 Difference]: Start difference. First operand 59632 states and 84032 transitions. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 6 states have internal predecessors, (149), 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) [2023-04-02 06:07:42,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:07:42,833 INFO L93 Difference]: Finished difference Result 130715 states and 186582 transitions. [2023-04-02 06:07:42,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:07:42,853 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 6 states have internal predecessors, (149), 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 152 [2023-04-02 06:07:42,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:07:43,239 INFO L225 Difference]: With dead ends: 130715 [2023-04-02 06:07:43,239 INFO L226 Difference]: Without dead ends: 108328 [2023-04-02 06:07:43,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:07:43,331 INFO L413 NwaCegarLoop]: 1055 mSDtfsCounter, 2977 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2977 SdHoareTripleChecker+Valid, 3747 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:07:43,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2977 Valid, 3747 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-02 06:07:43,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108328 states. [2023-04-02 06:08:01,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108328 to 81326. [2023-04-02 06:08:01,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81326 states, 81322 states have (on average 1.4089791200413173) internal successors, (114581), 81322 states have internal predecessors, (114581), 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) [2023-04-02 06:08:02,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81326 states to 81326 states and 114584 transitions. [2023-04-02 06:08:02,230 INFO L78 Accepts]: Start accepts. Automaton has 81326 states and 114584 transitions. Word has length 152 [2023-04-02 06:08:02,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:08:02,230 INFO L495 AbstractCegarLoop]: Abstraction has 81326 states and 114584 transitions. [2023-04-02 06:08:02,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 6 states have internal predecessors, (149), 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) [2023-04-02 06:08:02,231 INFO L276 IsEmpty]: Start isEmpty. Operand 81326 states and 114584 transitions. [2023-04-02 06:08:02,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-04-02 06:08:02,726 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:08:02,726 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:08:02,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:08:02,727 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:08:02,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:08:02,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1382397697, now seen corresponding path program 1 times [2023-04-02 06:08:02,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:08:02,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068319771] [2023-04-02 06:08:02,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:08:02,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:08:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:08:03,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:08:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:08:03,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:08:03,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:08:03,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068319771] [2023-04-02 06:08:03,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068319771] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:08:03,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:08:03,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:08:03,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475856225] [2023-04-02 06:08:03,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:08:03,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:08:03,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:08:03,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:08:03,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:08:03,087 INFO L87 Difference]: Start difference. First operand 81326 states and 114584 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 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) [2023-04-02 06:08:20,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:08:20,016 INFO L93 Difference]: Finished difference Result 108034 states and 151823 transitions. [2023-04-02 06:08:20,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:08:20,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 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 153 [2023-04-02 06:08:20,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:08:20,288 INFO L225 Difference]: With dead ends: 108034 [2023-04-02 06:08:20,289 INFO L226 Difference]: Without dead ends: 70508 [2023-04-02 06:08:20,364 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 [2023-04-02 06:08:20,365 INFO L413 NwaCegarLoop]: 915 mSDtfsCounter, 485 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:08:20,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 1468 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-04-02 06:08:20,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70508 states. [2023-04-02 06:08:33,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70508 to 70426. [2023-04-02 06:08:33,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70426 states, 70422 states have (on average 1.3958990088324672) internal successors, (98302), 70422 states have internal predecessors, (98302), 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) [2023-04-02 06:08:33,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70426 states to 70426 states and 98305 transitions. [2023-04-02 06:08:33,652 INFO L78 Accepts]: Start accepts. Automaton has 70426 states and 98305 transitions. Word has length 153 [2023-04-02 06:08:33,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:08:33,652 INFO L495 AbstractCegarLoop]: Abstraction has 70426 states and 98305 transitions. [2023-04-02 06:08:33,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 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) [2023-04-02 06:08:33,652 INFO L276 IsEmpty]: Start isEmpty. Operand 70426 states and 98305 transitions. [2023-04-02 06:08:33,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-04-02 06:08:33,823 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:08:33,824 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:08:33,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:08:33,825 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:08:33,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:08:33,826 INFO L85 PathProgramCache]: Analyzing trace with hash 492152854, now seen corresponding path program 1 times [2023-04-02 06:08:33,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:08:33,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70650444] [2023-04-02 06:08:33,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:08:33,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:08:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:08:34,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:08:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:08:34,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:08:34,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:08:34,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70650444] [2023-04-02 06:08:34,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70650444] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:08:34,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:08:34,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:08:34,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137800253] [2023-04-02 06:08:34,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:08:34,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:08:34,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:08:34,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:08:34,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:08:34,940 INFO L87 Difference]: Start difference. First operand 70426 states and 98305 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 6 states have internal predecessors, (151), 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) [2023-04-02 06:08:58,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:08:58,647 INFO L93 Difference]: Finished difference Result 129281 states and 182536 transitions. [2023-04-02 06:08:58,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:08:58,647 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 6 states have internal predecessors, (151), 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 154 [2023-04-02 06:08:58,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:08:58,919 INFO L225 Difference]: With dead ends: 129281 [2023-04-02 06:08:58,919 INFO L226 Difference]: Without dead ends: 109412 [2023-04-02 06:08:58,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:08:58,974 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 2942 mSDsluCounter, 2295 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2942 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:08:58,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2942 Valid, 3318 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-04-02 06:08:59,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109412 states. [2023-04-02 06:09:12,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109412 to 89433. [2023-04-02 06:09:12,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89433 states, 89429 states have (on average 1.3961354817788414) internal successors, (124855), 89429 states have internal predecessors, (124855), 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) [2023-04-02 06:09:13,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89433 states to 89433 states and 124858 transitions. [2023-04-02 06:09:13,280 INFO L78 Accepts]: Start accepts. Automaton has 89433 states and 124858 transitions. Word has length 154 [2023-04-02 06:09:13,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:09:13,281 INFO L495 AbstractCegarLoop]: Abstraction has 89433 states and 124858 transitions. [2023-04-02 06:09:13,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 6 states have internal predecessors, (151), 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) [2023-04-02 06:09:13,281 INFO L276 IsEmpty]: Start isEmpty. Operand 89433 states and 124858 transitions. [2023-04-02 06:09:13,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-04-02 06:09:13,406 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:09:13,406 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:09:13,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:09:13,407 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:09:13,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:09:13,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1971275341, now seen corresponding path program 1 times [2023-04-02 06:09:13,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:09:13,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269162900] [2023-04-02 06:09:13,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:09:13,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:09:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:13,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:09:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:13,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:09:13,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:09:13,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269162900] [2023-04-02 06:09:13,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269162900] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:09:13,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:09:13,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:09:13,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035071048] [2023-04-02 06:09:13,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:09:13,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:09:13,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:09:13,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:09:13,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:09:13,729 INFO L87 Difference]: Start difference. First operand 89433 states and 124858 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 6 states have internal predecessors, (151), 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) [2023-04-02 06:09:29,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:09:29,648 INFO L93 Difference]: Finished difference Result 142535 states and 200890 transitions. [2023-04-02 06:09:29,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:09:29,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 6 states have internal predecessors, (151), 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 154 [2023-04-02 06:09:29,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:09:29,877 INFO L225 Difference]: With dead ends: 142535 [2023-04-02 06:09:29,877 INFO L226 Difference]: Without dead ends: 126180 [2023-04-02 06:09:29,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:09:29,919 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 3156 mSDsluCounter, 2293 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3156 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:09:29,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3156 Valid, 3284 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-02 06:09:30,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126180 states. [2023-04-02 06:09:43,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126180 to 104225. [2023-04-02 06:09:43,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104225 states, 104221 states have (on average 1.3965515587069783) internal successors, (145550), 104221 states have internal predecessors, (145550), 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) [2023-04-02 06:09:43,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104225 states to 104225 states and 145553 transitions. [2023-04-02 06:09:43,647 INFO L78 Accepts]: Start accepts. Automaton has 104225 states and 145553 transitions. Word has length 154 [2023-04-02 06:09:43,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:09:43,647 INFO L495 AbstractCegarLoop]: Abstraction has 104225 states and 145553 transitions. [2023-04-02 06:09:43,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 6 states have internal predecessors, (151), 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) [2023-04-02 06:09:43,648 INFO L276 IsEmpty]: Start isEmpty. Operand 104225 states and 145553 transitions. [2023-04-02 06:09:44,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-04-02 06:09:44,008 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:09:44,009 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:09:44,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:09:44,009 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:09:44,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:09:44,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1045599856, now seen corresponding path program 1 times [2023-04-02 06:09:44,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:09:44,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421157143] [2023-04-02 06:09:44,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:09:44,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:09:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:44,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:09:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:44,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:09:44,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:09:44,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421157143] [2023-04-02 06:09:44,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421157143] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:09:44,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:09:44,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:09:44,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538745191] [2023-04-02 06:09:44,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:09:44,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:09:44,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:09:44,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:09:44,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:09:44,210 INFO L87 Difference]: Start difference. First operand 104225 states and 145553 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 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) [2023-04-02 06:10:05,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:05,667 INFO L93 Difference]: Finished difference Result 138158 states and 192451 transitions. [2023-04-02 06:10:05,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:10:05,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 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 155 [2023-04-02 06:10:05,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:05,987 INFO L225 Difference]: With dead ends: 138158 [2023-04-02 06:10:05,987 INFO L226 Difference]: Without dead ends: 95869 [2023-04-02 06:10:06,064 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 [2023-04-02 06:10:06,066 INFO L413 NwaCegarLoop]: 1013 mSDtfsCounter, 441 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:06,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 1566 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-02 06:10:06,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95869 states. [2023-04-02 06:10:21,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95869 to 95822. [2023-04-02 06:10:21,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95822 states, 95818 states have (on average 1.3831221691122753) internal successors, (132528), 95818 states have internal predecessors, (132528), 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) [2023-04-02 06:10:21,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95822 states to 95822 states and 132531 transitions. [2023-04-02 06:10:21,589 INFO L78 Accepts]: Start accepts. Automaton has 95822 states and 132531 transitions. Word has length 155 [2023-04-02 06:10:21,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:21,589 INFO L495 AbstractCegarLoop]: Abstraction has 95822 states and 132531 transitions. [2023-04-02 06:10:21,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 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) [2023-04-02 06:10:21,590 INFO L276 IsEmpty]: Start isEmpty. Operand 95822 states and 132531 transitions. [2023-04-02 06:10:21,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-04-02 06:10:21,731 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:21,731 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:10:21,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:10:21,731 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:10:21,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:21,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1679906032, now seen corresponding path program 1 times [2023-04-02 06:10:21,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:21,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591387610] [2023-04-02 06:10:21,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:21,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:21,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:21,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:10:21,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:21,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591387610] [2023-04-02 06:10:21,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591387610] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:21,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:21,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:10:21,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581311796] [2023-04-02 06:10:21,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:21,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:10:21,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:21,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:10:21,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:10:21,979 INFO L87 Difference]: Start difference. First operand 95822 states and 132531 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 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) [2023-04-02 06:10:41,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:41,907 INFO L93 Difference]: Finished difference Result 116831 states and 161379 transitions. [2023-04-02 06:10:41,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:10:41,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 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 155 [2023-04-02 06:10:41,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:42,228 INFO L225 Difference]: With dead ends: 116831 [2023-04-02 06:10:42,228 INFO L226 Difference]: Without dead ends: 91043 [2023-04-02 06:10:42,303 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 [2023-04-02 06:10:42,303 INFO L413 NwaCegarLoop]: 1016 mSDtfsCounter, 399 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:42,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 1569 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-04-02 06:10:42,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91043 states. [2023-04-02 06:11:00,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91043 to 91041. [2023-04-02 06:11:00,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91041 states, 91037 states have (on average 1.3728484022979668) internal successors, (124980), 91037 states have internal predecessors, (124980), 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) [2023-04-02 06:11:00,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91041 states to 91041 states and 124983 transitions. [2023-04-02 06:11:00,826 INFO L78 Accepts]: Start accepts. Automaton has 91041 states and 124983 transitions. Word has length 155 [2023-04-02 06:11:00,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:11:00,827 INFO L495 AbstractCegarLoop]: Abstraction has 91041 states and 124983 transitions. [2023-04-02 06:11:00,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 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) [2023-04-02 06:11:00,827 INFO L276 IsEmpty]: Start isEmpty. Operand 91041 states and 124983 transitions.