/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.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:33:58,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:33:58,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:33:58,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:33:58,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:33:58,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:33:58,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:33:58,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:33:58,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:33:58,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:33:58,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:33:58,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:33:58,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:33:58,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:33:58,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:33:58,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:33:58,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:33:58,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:33:58,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:33:58,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:33:58,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:33:58,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:33:58,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:33:58,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:33:58,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 06:33:58,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:33:58,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:33:58,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:33:58,788 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 06:33:58,806 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:33:58,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:33:58,807 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:33:58,807 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:33:58,807 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:33:58,808 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:33:58,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:33:58,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:33:58,808 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:33:58,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:33:58,809 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:33:58,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:33:58,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:33:58,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:33:58,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:33:58,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:33:58,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:33:58,809 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:33:58,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:33:58,810 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:33:58,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:33:58,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:33:58,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:33:58,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:33:58,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:33:58,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:33:58,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:33:58,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:33:58,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:33:58,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:33:58,811 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:33:58,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:33:58,811 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:33:58,811 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:33:58,811 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:33:58,811 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:33:59,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:33:59,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:33:59,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:33:59,060 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:33:59,060 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:33:59,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2023-04-02 06:34:00,257 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:34:00,511 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:34:00,511 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2023-04-02 06:34:00,523 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d720988a1/abd96d5b32724b378531dac44e444dbc/FLAG047836a75 [2023-04-02 06:34:00,535 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d720988a1/abd96d5b32724b378531dac44e444dbc [2023-04-02 06:34:00,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:34:00,538 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:34:00,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:34:00,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:34:00,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:34:00,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:34:00" (1/1) ... [2023-04-02 06:34:00,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cbf1570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:34:00, skipping insertion in model container [2023-04-02 06:34:00,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:34:00" (1/1) ... [2023-04-02 06:34:00,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:34:00,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:34:00,879 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.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[14220,14233] [2023-04-02 06:34:00,956 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:34:00,970 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:34:01,069 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.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[14220,14233] [2023-04-02 06:34:01,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:34:01,201 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:34:01,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:34:01 WrapperNode [2023-04-02 06:34:01,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:34:01,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:34:01,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:34:01,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:34:01,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:34:01" (1/1) ... [2023-04-02 06:34:01,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:34:01" (1/1) ... [2023-04-02 06:34:01,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:34:01" (1/1) ... [2023-04-02 06:34:01,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:34:01" (1/1) ... [2023-04-02 06:34:01,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:34:01" (1/1) ... [2023-04-02 06:34:01,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:34:01" (1/1) ... [2023-04-02 06:34:01,281 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:34:01" (1/1) ... [2023-04-02 06:34:01,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:34:01" (1/1) ... [2023-04-02 06:34:01,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:34:01,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:34:01,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:34:01,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:34:01,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:34:01" (1/1) ... [2023-04-02 06:34:01,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:34:01,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:34:01,325 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 06:34:01,357 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 06:34:01,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:34:01,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:34:01,376 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:34:01,376 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:34:01,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:34:01,376 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:34:01,376 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:34:01,376 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:34:01,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:34:01,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:34:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:34:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:34:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:34:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:34:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:34:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:34:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:34:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:34:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:34:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 06:34:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:34:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:34:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:34:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:34:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:34:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:34:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:34:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:34:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:34:01,544 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:34:01,546 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:34:02,336 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:34:02,350 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:34:02,351 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:34:02,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:34:02 BoogieIcfgContainer [2023-04-02 06:34:02,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:34:02,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:34:02,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:34:02,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:34:02,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:34:00" (1/3) ... [2023-04-02 06:34:02,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17149f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:34:02, skipping insertion in model container [2023-04-02 06:34:02,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:34:01" (2/3) ... [2023-04-02 06:34:02,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17149f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:34:02, skipping insertion in model container [2023-04-02 06:34:02,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:34:02" (3/3) ... [2023-04-02 06:34:02,369 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2023-04-02 06:34:02,386 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:34:02,387 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 06:34:02,433 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:34:02,439 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;@2835c35e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:34:02,439 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 06:34:02,447 INFO L276 IsEmpty]: Start isEmpty. Operand has 370 states, 330 states have (on average 1.6606060606060606) internal successors, (548), 365 states have internal predecessors, (548), 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 06:34:02,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-04-02 06:34:02,475 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:34:02,476 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] [2023-04-02 06:34:02,476 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:34:02,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:34:02,480 INFO L85 PathProgramCache]: Analyzing trace with hash -2087198463, now seen corresponding path program 1 times [2023-04-02 06:34:02,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:34:02,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083028124] [2023-04-02 06:34:02,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:34:02,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:34:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:03,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:34:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:03,319 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 06:34:03,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:34:03,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083028124] [2023-04-02 06:34:03,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083028124] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:34:03,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:34:03,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:34:03,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914394707] [2023-04-02 06:34:03,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:34:03,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 06:34:03,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:34:03,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 06:34:03,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:34:03,373 INFO L87 Difference]: Start difference. First operand has 370 states, 330 states have (on average 1.6606060606060606) internal successors, (548), 365 states have internal predecessors, (548), 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 25.6) internal successors, (128), 4 states have internal predecessors, (128), 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 06:34:04,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:34:04,558 INFO L93 Difference]: Finished difference Result 678 states and 1040 transitions. [2023-04-02 06:34:04,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 06:34:04,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 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 131 [2023-04-02 06:34:04,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:34:04,570 INFO L225 Difference]: With dead ends: 678 [2023-04-02 06:34:04,571 INFO L226 Difference]: Without dead ends: 327 [2023-04-02 06:34:04,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:34:04,585 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 99 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:34:04,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 1500 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:34:04,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-04-02 06:34:04,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2023-04-02 06:34:04,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 323 states have (on average 1.5139318885448916) internal successors, (489), 323 states have internal predecessors, (489), 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 06:34:04,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 492 transitions. [2023-04-02 06:34:04,665 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 492 transitions. Word has length 131 [2023-04-02 06:34:04,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:34:04,667 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 492 transitions. [2023-04-02 06:34:04,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 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 06:34:04,667 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 492 transitions. [2023-04-02 06:34:04,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-04-02 06:34:04,672 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:34:04,672 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, 1, 1, 1, 1, 1, 1] [2023-04-02 06:34:04,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:34:04,673 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:34:04,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:34:04,673 INFO L85 PathProgramCache]: Analyzing trace with hash 570357730, now seen corresponding path program 1 times [2023-04-02 06:34:04,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:34:04,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501735326] [2023-04-02 06:34:04,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:34:04,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:34:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:04,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:34:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:04,993 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 06:34:04,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:34:04,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501735326] [2023-04-02 06:34:04,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501735326] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:34:04,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:34:04,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:34:04,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750623204] [2023-04-02 06:34:04,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:34:04,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:34:04,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:34:04,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:34:04,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:34:04,997 INFO L87 Difference]: Start difference. First operand 327 states and 492 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 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 06:34:06,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:34:06,146 INFO L93 Difference]: Finished difference Result 802 states and 1237 transitions. [2023-04-02 06:34:06,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:34:06,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 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 161 [2023-04-02 06:34:06,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:34:06,150 INFO L225 Difference]: With dead ends: 802 [2023-04-02 06:34:06,150 INFO L226 Difference]: Without dead ends: 520 [2023-04-02 06:34:06,151 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 06:34:06,153 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 333 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:34:06,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 961 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:34:06,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2023-04-02 06:34:06,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 518. [2023-04-02 06:34:06,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 514 states have (on average 1.527237354085603) internal successors, (785), 514 states have internal predecessors, (785), 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 06:34:06,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 788 transitions. [2023-04-02 06:34:06,179 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 788 transitions. Word has length 161 [2023-04-02 06:34:06,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:34:06,180 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 788 transitions. [2023-04-02 06:34:06,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 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 06:34:06,180 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 788 transitions. [2023-04-02 06:34:06,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-04-02 06:34:06,182 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:34:06,182 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:34:06,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:34:06,183 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:34:06,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:34:06,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1002283535, now seen corresponding path program 1 times [2023-04-02 06:34:06,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:34:06,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068270988] [2023-04-02 06:34:06,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:34:06,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:34:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:06,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:34:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:06,467 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 06:34:06,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:34:06,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068270988] [2023-04-02 06:34:06,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068270988] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:34:06,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:34:06,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:34:06,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773206916] [2023-04-02 06:34:06,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:34:06,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:34:06,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:34:06,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:34:06,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:34:06,471 INFO L87 Difference]: Start difference. First operand 518 states and 788 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 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 06:34:07,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:34:07,458 INFO L93 Difference]: Finished difference Result 1329 states and 2054 transitions. [2023-04-02 06:34:07,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:34:07,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 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 164 [2023-04-02 06:34:07,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:34:07,464 INFO L225 Difference]: With dead ends: 1329 [2023-04-02 06:34:07,464 INFO L226 Difference]: Without dead ends: 862 [2023-04-02 06:34:07,468 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 06:34:07,470 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 320 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:34:07,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 941 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:34:07,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2023-04-02 06:34:07,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 860. [2023-04-02 06:34:07,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 856 states have (on average 1.5315420560747663) internal successors, (1311), 856 states have internal predecessors, (1311), 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 06:34:07,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1314 transitions. [2023-04-02 06:34:07,546 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1314 transitions. Word has length 164 [2023-04-02 06:34:07,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:34:07,547 INFO L495 AbstractCegarLoop]: Abstraction has 860 states and 1314 transitions. [2023-04-02 06:34:07,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 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 06:34:07,547 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1314 transitions. [2023-04-02 06:34:07,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-04-02 06:34:07,550 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:34:07,550 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:34:07,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:34:07,550 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:34:07,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:34:07,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1310016245, now seen corresponding path program 1 times [2023-04-02 06:34:07,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:34:07,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730976186] [2023-04-02 06:34:07,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:34:07,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:34:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:07,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:34:07,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:07,845 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 06:34:07,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:34:07,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730976186] [2023-04-02 06:34:07,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730976186] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:34:07,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:34:07,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:34:07,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639245096] [2023-04-02 06:34:07,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:34:07,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:34:07,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:34:07,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:34:07,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:34:07,848 INFO L87 Difference]: Start difference. First operand 860 states and 1314 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 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 06:34:08,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:34:08,995 INFO L93 Difference]: Finished difference Result 2265 states and 3490 transitions. [2023-04-02 06:34:08,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:34:08,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 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 167 [2023-04-02 06:34:08,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:34:09,003 INFO L225 Difference]: With dead ends: 2265 [2023-04-02 06:34:09,004 INFO L226 Difference]: Without dead ends: 1462 [2023-04-02 06:34:09,005 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 06:34:09,014 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 307 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:34:09,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 965 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:34:09,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2023-04-02 06:34:09,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1460. [2023-04-02 06:34:09,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1456 states have (on average 1.5267857142857142) internal successors, (2223), 1456 states have internal predecessors, (2223), 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 06:34:09,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2226 transitions. [2023-04-02 06:34:09,114 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2226 transitions. Word has length 167 [2023-04-02 06:34:09,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:34:09,114 INFO L495 AbstractCegarLoop]: Abstraction has 1460 states and 2226 transitions. [2023-04-02 06:34:09,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 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 06:34:09,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2226 transitions. [2023-04-02 06:34:09,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-04-02 06:34:09,119 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:34:09,119 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:34:09,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:34:09,120 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:34:09,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:34:09,120 INFO L85 PathProgramCache]: Analyzing trace with hash 23138920, now seen corresponding path program 1 times [2023-04-02 06:34:09,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:34:09,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805034479] [2023-04-02 06:34:09,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:34:09,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:34:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:09,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:34:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:09,345 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 06:34:09,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:34:09,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805034479] [2023-04-02 06:34:09,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805034479] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:34:09,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:34:09,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:34:09,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032696153] [2023-04-02 06:34:09,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:34:09,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:34:09,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:34:09,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:34:09,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:34:09,356 INFO L87 Difference]: Start difference. First operand 1460 states and 2226 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 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 06:34:10,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:34:10,374 INFO L93 Difference]: Finished difference Result 3887 states and 5942 transitions. [2023-04-02 06:34:10,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:34:10,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 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 170 [2023-04-02 06:34:10,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:34:10,385 INFO L225 Difference]: With dead ends: 3887 [2023-04-02 06:34:10,385 INFO L226 Difference]: Without dead ends: 2490 [2023-04-02 06:34:10,388 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 06:34:10,389 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 295 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:34:10,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 825 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:34:10,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2023-04-02 06:34:10,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 2488. [2023-04-02 06:34:10,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2488 states, 2484 states have (on average 1.5132850241545894) internal successors, (3759), 2484 states have internal predecessors, (3759), 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 06:34:10,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 3762 transitions. [2023-04-02 06:34:10,584 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 3762 transitions. Word has length 170 [2023-04-02 06:34:10,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:34:10,584 INFO L495 AbstractCegarLoop]: Abstraction has 2488 states and 3762 transitions. [2023-04-02 06:34:10,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 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 06:34:10,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 3762 transitions. [2023-04-02 06:34:10,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-04-02 06:34:10,591 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:34:10,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:34:10,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:34:10,592 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:34:10,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:34:10,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1798879899, now seen corresponding path program 1 times [2023-04-02 06:34:10,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:34:10,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436562581] [2023-04-02 06:34:10,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:34:10,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:34:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:10,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:34:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:10,858 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 06:34:10,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:34:10,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436562581] [2023-04-02 06:34:10,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436562581] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:34:10,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:34:10,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:34:10,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126649528] [2023-04-02 06:34:10,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:34:10,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:34:10,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:34:10,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:34:10,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:34:10,861 INFO L87 Difference]: Start difference. First operand 2488 states and 3762 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 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 06:34:12,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:34:12,093 INFO L93 Difference]: Finished difference Result 6617 states and 9982 transitions. [2023-04-02 06:34:12,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:34:12,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 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 173 [2023-04-02 06:34:12,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:34:12,108 INFO L225 Difference]: With dead ends: 6617 [2023-04-02 06:34:12,109 INFO L226 Difference]: Without dead ends: 4198 [2023-04-02 06:34:12,113 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 06:34:12,113 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 282 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:34:12,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 805 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:34:12,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4198 states. [2023-04-02 06:34:12,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4198 to 4196. [2023-04-02 06:34:12,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4196 states, 4192 states have (on average 1.490219465648855) internal successors, (6247), 4192 states have internal predecessors, (6247), 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 06:34:12,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4196 states to 4196 states and 6250 transitions. [2023-04-02 06:34:12,370 INFO L78 Accepts]: Start accepts. Automaton has 4196 states and 6250 transitions. Word has length 173 [2023-04-02 06:34:12,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:34:12,371 INFO L495 AbstractCegarLoop]: Abstraction has 4196 states and 6250 transitions. [2023-04-02 06:34:12,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 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 06:34:12,371 INFO L276 IsEmpty]: Start isEmpty. Operand 4196 states and 6250 transitions. [2023-04-02 06:34:12,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-04-02 06:34:12,382 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:34:12,382 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, 1, 1, 1, 1, 1, 1, 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 06:34:12,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:34:12,383 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:34:12,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:34:12,383 INFO L85 PathProgramCache]: Analyzing trace with hash -719995403, now seen corresponding path program 1 times [2023-04-02 06:34:12,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:34:12,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271343061] [2023-04-02 06:34:12,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:34:12,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:34:12,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:12,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:34:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:12,805 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 06:34:12,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:34:12,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271343061] [2023-04-02 06:34:12,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271343061] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:34:12,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:34:12,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:34:12,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157369113] [2023-04-02 06:34:12,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:34:12,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:34:12,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:34:12,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:34:12,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:34:12,807 INFO L87 Difference]: Start difference. First operand 4196 states and 6250 transitions. Second operand has 8 states, 8 states have (on average 21.625) internal successors, (173), 7 states have internal predecessors, (173), 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 06:34:18,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:34:18,064 INFO L93 Difference]: Finished difference Result 38329 states and 56773 transitions. [2023-04-02 06:34:18,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:34:18,065 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.625) internal successors, (173), 7 states have internal predecessors, (173), 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 176 [2023-04-02 06:34:18,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:34:18,179 INFO L225 Difference]: With dead ends: 38329 [2023-04-02 06:34:18,179 INFO L226 Difference]: Without dead ends: 34207 [2023-04-02 06:34:18,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2023-04-02 06:34:18,198 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 2881 mSDsluCounter, 5485 mSDsCounter, 0 mSdLazyCounter, 2116 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2881 SdHoareTripleChecker+Valid, 7004 SdHoareTripleChecker+Invalid, 2142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:34:18,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2881 Valid, 7004 Invalid, 2142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2116 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-02 06:34:18,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34207 states. [2023-04-02 06:34:19,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34207 to 8257. [2023-04-02 06:34:19,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8257 states, 8253 states have (on average 1.4763116442505755) internal successors, (12184), 8253 states have internal predecessors, (12184), 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 06:34:19,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8257 states to 8257 states and 12187 transitions. [2023-04-02 06:34:19,601 INFO L78 Accepts]: Start accepts. Automaton has 8257 states and 12187 transitions. Word has length 176 [2023-04-02 06:34:19,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:34:19,601 INFO L495 AbstractCegarLoop]: Abstraction has 8257 states and 12187 transitions. [2023-04-02 06:34:19,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.625) internal successors, (173), 7 states have internal predecessors, (173), 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 06:34:19,602 INFO L276 IsEmpty]: Start isEmpty. Operand 8257 states and 12187 transitions. [2023-04-02 06:34:19,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-04-02 06:34:19,623 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:34:19,623 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, 1, 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 06:34:19,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:34:19,624 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:34:19,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:34:19,624 INFO L85 PathProgramCache]: Analyzing trace with hash -794412992, now seen corresponding path program 1 times [2023-04-02 06:34:19,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:34:19,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390569075] [2023-04-02 06:34:19,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:34:19,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:34:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:20,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:34:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:20,194 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 06:34:20,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:34:20,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390569075] [2023-04-02 06:34:20,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390569075] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:34:20,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:34:20,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:34:20,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797305442] [2023-04-02 06:34:20,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:34:20,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:34:20,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:34:20,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:34:20,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:34:20,197 INFO L87 Difference]: Start difference. First operand 8257 states and 12187 transitions. Second operand has 8 states, 8 states have (on average 22.125) internal successors, (177), 7 states have internal predecessors, (177), 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 06:34:22,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:34:22,347 INFO L93 Difference]: Finished difference Result 16442 states and 24289 transitions. [2023-04-02 06:34:22,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:34:22,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.125) internal successors, (177), 7 states have internal predecessors, (177), 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 180 [2023-04-02 06:34:22,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:34:22,367 INFO L225 Difference]: With dead ends: 16442 [2023-04-02 06:34:22,367 INFO L226 Difference]: Without dead ends: 8259 [2023-04-02 06:34:22,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2023-04-02 06:34:22,382 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 1791 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1791 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:34:22,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1791 Valid, 1989 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 06:34:22,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8259 states. [2023-04-02 06:34:23,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8259 to 8257. [2023-04-02 06:34:23,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8257 states, 8253 states have (on average 1.4606809644977583) internal successors, (12055), 8253 states have internal predecessors, (12055), 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 06:34:23,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8257 states to 8257 states and 12058 transitions. [2023-04-02 06:34:23,286 INFO L78 Accepts]: Start accepts. Automaton has 8257 states and 12058 transitions. Word has length 180 [2023-04-02 06:34:23,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:34:23,287 INFO L495 AbstractCegarLoop]: Abstraction has 8257 states and 12058 transitions. [2023-04-02 06:34:23,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.125) internal successors, (177), 7 states have internal predecessors, (177), 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 06:34:23,288 INFO L276 IsEmpty]: Start isEmpty. Operand 8257 states and 12058 transitions. [2023-04-02 06:34:23,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-04-02 06:34:23,311 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:34:23,311 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, 1, 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 06:34:23,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:34:23,312 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:34:23,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:34:23,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1339624865, now seen corresponding path program 1 times [2023-04-02 06:34:23,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:34:23,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319077354] [2023-04-02 06:34:23,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:34:23,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:34:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:23,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:34:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:23,579 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 06:34:23,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:34:23,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319077354] [2023-04-02 06:34:23,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319077354] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:34:23,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:34:23,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:34:23,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856836486] [2023-04-02 06:34:23,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:34:23,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:34:23,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:34:23,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:34:23,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:34:23,582 INFO L87 Difference]: Start difference. First operand 8257 states and 12058 transitions. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 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 06:34:25,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:34:25,859 INFO L93 Difference]: Finished difference Result 19891 states and 29107 transitions. [2023-04-02 06:34:25,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:34:25,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 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 180 [2023-04-02 06:34:25,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:34:25,881 INFO L225 Difference]: With dead ends: 19891 [2023-04-02 06:34:25,881 INFO L226 Difference]: Without dead ends: 11707 [2023-04-02 06:34:25,894 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 06:34:25,896 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 350 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:34:25,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 1095 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:34:25,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11707 states. [2023-04-02 06:34:26,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11707 to 11705. [2023-04-02 06:34:26,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11705 states, 11701 states have (on average 1.4529527390821297) internal successors, (17001), 11701 states have internal predecessors, (17001), 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 06:34:27,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11705 states to 11705 states and 17004 transitions. [2023-04-02 06:34:27,008 INFO L78 Accepts]: Start accepts. Automaton has 11705 states and 17004 transitions. Word has length 180 [2023-04-02 06:34:27,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:34:27,009 INFO L495 AbstractCegarLoop]: Abstraction has 11705 states and 17004 transitions. [2023-04-02 06:34:27,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 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 06:34:27,009 INFO L276 IsEmpty]: Start isEmpty. Operand 11705 states and 17004 transitions. [2023-04-02 06:34:27,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-04-02 06:34:27,034 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:34:27,034 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, 1, 1, 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 06:34:27,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:34:27,034 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:34:27,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:34:27,035 INFO L85 PathProgramCache]: Analyzing trace with hash 393897158, now seen corresponding path program 1 times [2023-04-02 06:34:27,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:34:27,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342952816] [2023-04-02 06:34:27,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:34:27,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:34:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:27,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:34:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:27,282 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 06:34:27,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:34:27,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342952816] [2023-04-02 06:34:27,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342952816] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:34:27,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:34:27,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:34:27,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496770405] [2023-04-02 06:34:27,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:34:27,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:34:27,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:34:27,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:34:27,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:34:27,285 INFO L87 Difference]: Start difference. First operand 11705 states and 17004 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 3 states have internal predecessors, (178), 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 06:34:30,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:34:30,009 INFO L93 Difference]: Finished difference Result 33281 states and 48285 transitions. [2023-04-02 06:34:30,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:34:30,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 3 states have internal predecessors, (178), 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 181 [2023-04-02 06:34:30,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:34:30,049 INFO L225 Difference]: With dead ends: 33281 [2023-04-02 06:34:30,049 INFO L226 Difference]: Without dead ends: 23190 [2023-04-02 06:34:30,070 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 06:34:30,070 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 347 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:34:30,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 533 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:34:30,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23190 states. [2023-04-02 06:34:32,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23190 to 23188. [2023-04-02 06:34:32,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23188 states, 23184 states have (on average 1.4431504485852311) internal successors, (33458), 23184 states have internal predecessors, (33458), 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 06:34:32,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23188 states to 23188 states and 33461 transitions. [2023-04-02 06:34:32,203 INFO L78 Accepts]: Start accepts. Automaton has 23188 states and 33461 transitions. Word has length 181 [2023-04-02 06:34:32,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:34:32,203 INFO L495 AbstractCegarLoop]: Abstraction has 23188 states and 33461 transitions. [2023-04-02 06:34:32,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 3 states have internal predecessors, (178), 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 06:34:32,203 INFO L276 IsEmpty]: Start isEmpty. Operand 23188 states and 33461 transitions. [2023-04-02 06:34:32,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-04-02 06:34:32,249 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:34:32,250 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, 1, 1, 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 06:34:32,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:34:32,250 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:34:32,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:34:32,251 INFO L85 PathProgramCache]: Analyzing trace with hash -583420314, now seen corresponding path program 1 times [2023-04-02 06:34:32,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:34:32,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602613640] [2023-04-02 06:34:32,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:34:32,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:34:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:32,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:34:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:32,667 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 06:34:32,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:34:32,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602613640] [2023-04-02 06:34:32,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602613640] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:34:32,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:34:32,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:34:32,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065314890] [2023-04-02 06:34:32,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:34:32,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:34:32,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:34:32,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:34:32,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:34:32,669 INFO L87 Difference]: Start difference. First operand 23188 states and 33461 transitions. Second operand has 8 states, 8 states have (on average 22.25) internal successors, (178), 7 states have internal predecessors, (178), 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 06:34:44,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:34:44,684 INFO L93 Difference]: Finished difference Result 112699 states and 161768 transitions. [2023-04-02 06:34:44,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:34:44,684 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.25) internal successors, (178), 7 states have internal predecessors, (178), 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 181 [2023-04-02 06:34:44,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:34:44,854 INFO L225 Difference]: With dead ends: 112699 [2023-04-02 06:34:44,855 INFO L226 Difference]: Without dead ends: 101825 [2023-04-02 06:34:44,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:34:44,898 INFO L413 NwaCegarLoop]: 1339 mSDtfsCounter, 2194 mSDsluCounter, 2895 mSDsCounter, 0 mSdLazyCounter, 1816 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 4234 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:34:44,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2194 Valid, 4234 Invalid, 1835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1816 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-02 06:34:45,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101825 states. [2023-04-02 06:34:50,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101825 to 41145. [2023-04-02 06:34:50,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41145 states, 41141 states have (on average 1.4340682044675628) internal successors, (58999), 41141 states have internal predecessors, (58999), 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 06:34:51,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41145 states to 41145 states and 59002 transitions. [2023-04-02 06:34:51,003 INFO L78 Accepts]: Start accepts. Automaton has 41145 states and 59002 transitions. Word has length 181 [2023-04-02 06:34:51,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:34:51,003 INFO L495 AbstractCegarLoop]: Abstraction has 41145 states and 59002 transitions. [2023-04-02 06:34:51,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.25) internal successors, (178), 7 states have internal predecessors, (178), 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 06:34:51,004 INFO L276 IsEmpty]: Start isEmpty. Operand 41145 states and 59002 transitions. [2023-04-02 06:34:51,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-04-02 06:34:51,076 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:34:51,076 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, 1, 1, 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 06:34:51,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:34:51,077 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:34:51,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:34:51,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1504878886, now seen corresponding path program 1 times [2023-04-02 06:34:51,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:34:51,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894061967] [2023-04-02 06:34:51,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:34:51,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:34:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:51,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:34:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:51,451 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 06:34:51,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:34:51,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894061967] [2023-04-02 06:34:51,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894061967] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:34:51,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:34:51,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:34:51,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107082658] [2023-04-02 06:34:51,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:34:51,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:34:51,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:34:51,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:34:51,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:34:51,453 INFO L87 Difference]: Start difference. First operand 41145 states and 59002 transitions. Second operand has 8 states, 8 states have (on average 22.25) internal successors, (178), 7 states have internal predecessors, (178), 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 06:35:06,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:06,968 INFO L93 Difference]: Finished difference Result 130838 states and 187641 transitions. [2023-04-02 06:35:06,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:35:06,968 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.25) internal successors, (178), 7 states have internal predecessors, (178), 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 181 [2023-04-02 06:35:06,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:07,163 INFO L225 Difference]: With dead ends: 130838 [2023-04-02 06:35:07,164 INFO L226 Difference]: Without dead ends: 115248 [2023-04-02 06:35:07,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:35:07,207 INFO L413 NwaCegarLoop]: 1053 mSDtfsCounter, 2620 mSDsluCounter, 2015 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2620 SdHoareTripleChecker+Valid, 3068 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:07,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2620 Valid, 3068 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 06:35:07,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115248 states. [2023-04-02 06:35:16,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115248 to 66378. [2023-04-02 06:35:16,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66378 states, 66374 states have (on average 1.4273661373429354) internal successors, (94740), 66374 states have internal predecessors, (94740), 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 06:35:16,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66378 states to 66378 states and 94743 transitions. [2023-04-02 06:35:16,840 INFO L78 Accepts]: Start accepts. Automaton has 66378 states and 94743 transitions. Word has length 181 [2023-04-02 06:35:16,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:16,841 INFO L495 AbstractCegarLoop]: Abstraction has 66378 states and 94743 transitions. [2023-04-02 06:35:16,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.25) internal successors, (178), 7 states have internal predecessors, (178), 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 06:35:16,841 INFO L276 IsEmpty]: Start isEmpty. Operand 66378 states and 94743 transitions. [2023-04-02 06:35:16,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-04-02 06:35:16,965 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:16,965 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, 1, 1, 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 06:35:16,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:35:16,966 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:16,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:16,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1306762094, now seen corresponding path program 1 times [2023-04-02 06:35:16,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:16,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747790753] [2023-04-02 06:35:16,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:16,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:17,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:17,537 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 06:35:17,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:17,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747790753] [2023-04-02 06:35:17,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747790753] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:17,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:17,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:35:17,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442251873] [2023-04-02 06:35:17,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:17,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:35:17,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:17,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:35:17,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:35:17,539 INFO L87 Difference]: Start difference. First operand 66378 states and 94743 transitions. Second operand has 8 states, 8 states have (on average 22.25) internal successors, (178), 7 states have internal predecessors, (178), 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 06:35:35,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:35,801 INFO L93 Difference]: Finished difference Result 148622 states and 212781 transitions. [2023-04-02 06:35:35,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:35:35,802 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.25) internal successors, (178), 7 states have internal predecessors, (178), 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 181 [2023-04-02 06:35:35,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:36,012 INFO L225 Difference]: With dead ends: 148622 [2023-04-02 06:35:36,013 INFO L226 Difference]: Without dead ends: 133596 [2023-04-02 06:35:36,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:35:36,205 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 2633 mSDsluCounter, 2141 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2633 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:36,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2633 Valid, 3067 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-02 06:35:36,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133596 states. [2023-04-02 06:35:47,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133596 to 84734. [2023-04-02 06:35:47,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84734 states, 84730 states have (on average 1.424690192375782) internal successors, (120714), 84730 states have internal predecessors, (120714), 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 06:35:48,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84734 states to 84734 states and 120717 transitions. [2023-04-02 06:35:48,133 INFO L78 Accepts]: Start accepts. Automaton has 84734 states and 120717 transitions. Word has length 181 [2023-04-02 06:35:48,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:48,133 INFO L495 AbstractCegarLoop]: Abstraction has 84734 states and 120717 transitions. [2023-04-02 06:35:48,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.25) internal successors, (178), 7 states have internal predecessors, (178), 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 06:35:48,133 INFO L276 IsEmpty]: Start isEmpty. Operand 84734 states and 120717 transitions. [2023-04-02 06:35:48,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-04-02 06:35:48,438 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:48,438 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, 1, 1, 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 06:35:48,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:35:48,438 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:48,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:48,439 INFO L85 PathProgramCache]: Analyzing trace with hash -93491176, now seen corresponding path program 1 times [2023-04-02 06:35:48,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:48,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831511442] [2023-04-02 06:35:48,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:48,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:48,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:48,826 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 06:35:48,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:48,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831511442] [2023-04-02 06:35:48,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831511442] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:48,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:48,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:35:48,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16072918] [2023-04-02 06:35:48,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:48,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:35:48,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:48,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:35:48,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:35:48,828 INFO L87 Difference]: Start difference. First operand 84734 states and 120717 transitions. Second operand has 8 states, 8 states have (on average 22.25) internal successors, (178), 7 states have internal predecessors, (178), 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 06:36:10,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:10,375 INFO L93 Difference]: Finished difference Result 165918 states and 237173 transitions. [2023-04-02 06:36:10,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:36:10,375 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.25) internal successors, (178), 7 states have internal predecessors, (178), 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 181 [2023-04-02 06:36:10,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:10,649 INFO L225 Difference]: With dead ends: 165918 [2023-04-02 06:36:10,649 INFO L226 Difference]: Without dead ends: 150628 [2023-04-02 06:36:10,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:36:10,699 INFO L413 NwaCegarLoop]: 1188 mSDtfsCounter, 2326 mSDsluCounter, 2607 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2326 SdHoareTripleChecker+Valid, 3795 SdHoareTripleChecker+Invalid, 1585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:10,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2326 Valid, 3795 Invalid, 1585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-02 06:36:11,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150628 states. [2023-04-02 06:36:25,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150628 to 103482. [2023-04-02 06:36:25,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103482 states, 103478 states have (on average 1.4231430835539922) internal successors, (147264), 103478 states have internal predecessors, (147264), 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 06:36:25,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103482 states to 103482 states and 147267 transitions. [2023-04-02 06:36:25,911 INFO L78 Accepts]: Start accepts. Automaton has 103482 states and 147267 transitions. Word has length 181 [2023-04-02 06:36:25,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:25,911 INFO L495 AbstractCegarLoop]: Abstraction has 103482 states and 147267 transitions. [2023-04-02 06:36:25,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.25) internal successors, (178), 7 states have internal predecessors, (178), 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 06:36:25,911 INFO L276 IsEmpty]: Start isEmpty. Operand 103482 states and 147267 transitions. [2023-04-02 06:36:26,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-04-02 06:36:26,043 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:26,044 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, 1, 1, 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 06:36:26,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:36:26,044 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:26,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:26,045 INFO L85 PathProgramCache]: Analyzing trace with hash -180410784, now seen corresponding path program 1 times [2023-04-02 06:36:26,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:26,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725975274] [2023-04-02 06:36:26,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:26,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:26,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:26,396 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 06:36:26,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:26,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725975274] [2023-04-02 06:36:26,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725975274] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:26,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:26,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:36:26,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880533574] [2023-04-02 06:36:26,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:26,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:36:26,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:26,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:36:26,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:36:26,399 INFO L87 Difference]: Start difference. First operand 103482 states and 147267 transitions. Second operand has 8 states, 8 states have (on average 22.25) internal successors, (178), 7 states have internal predecessors, (178), 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 06:36:53,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:53,268 INFO L93 Difference]: Finished difference Result 185660 states and 265249 transitions. [2023-04-02 06:36:53,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:36:53,269 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.25) internal successors, (178), 7 states have internal predecessors, (178), 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 181 [2023-04-02 06:36:53,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:53,548 INFO L225 Difference]: With dead ends: 185660 [2023-04-02 06:36:53,548 INFO L226 Difference]: Without dead ends: 169782 [2023-04-02 06:36:53,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:36:53,605 INFO L413 NwaCegarLoop]: 1314 mSDtfsCounter, 2367 mSDsluCounter, 3871 mSDsCounter, 0 mSdLazyCounter, 1865 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2367 SdHoareTripleChecker+Valid, 5185 SdHoareTripleChecker+Invalid, 1884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:53,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2367 Valid, 5185 Invalid, 1884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1865 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-02 06:36:53,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169782 states. [2023-04-02 06:37:12,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169782 to 122861. [2023-04-02 06:37:12,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122861 states, 122857 states have (on average 1.4226539798302091) internal successors, (174783), 122857 states have internal predecessors, (174783), 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 06:37:13,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122861 states to 122861 states and 174786 transitions. [2023-04-02 06:37:13,070 INFO L78 Accepts]: Start accepts. Automaton has 122861 states and 174786 transitions. Word has length 181 [2023-04-02 06:37:13,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:37:13,071 INFO L495 AbstractCegarLoop]: Abstraction has 122861 states and 174786 transitions. [2023-04-02 06:37:13,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.25) internal successors, (178), 7 states have internal predecessors, (178), 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 06:37:13,071 INFO L276 IsEmpty]: Start isEmpty. Operand 122861 states and 174786 transitions. [2023-04-02 06:37:13,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-04-02 06:37:13,267 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:37:13,267 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, 1, 1, 1, 1, 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 06:37:13,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:37:13,268 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:37:13,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:37:13,268 INFO L85 PathProgramCache]: Analyzing trace with hash 884765545, now seen corresponding path program 1 times [2023-04-02 06:37:13,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:37:13,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653106454] [2023-04-02 06:37:13,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:37:13,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:37:13,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:37:13,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:37:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:37:13,818 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 06:37:13,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:37:13,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653106454] [2023-04-02 06:37:13,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653106454] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:37:13,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:37:13,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:37:13,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540436971] [2023-04-02 06:37:13,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:37:13,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:37:13,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:37:13,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:37:13,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:37:13,822 INFO L87 Difference]: Start difference. First operand 122861 states and 174786 transitions. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 3 states have internal predecessors, (180), 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 06:37:52,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:37:52,500 INFO L93 Difference]: Finished difference Result 362888 states and 515349 transitions. [2023-04-02 06:37:52,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:37:52,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 3 states have internal predecessors, (180), 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 183 [2023-04-02 06:37:52,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:37:53,219 INFO L225 Difference]: With dead ends: 362888 [2023-04-02 06:37:53,220 INFO L226 Difference]: Without dead ends: 243653 [2023-04-02 06:37:53,353 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 06:37:53,354 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 327 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:37:53,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 527 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:37:53,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243653 states.