/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:16:50,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:16:50,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:16:50,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:16:50,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:16:50,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:16:50,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:16:50,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:16:50,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:16:50,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:16:50,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:16:50,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:16:50,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:16:50,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:16:50,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:16:50,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:16:50,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:16:50,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:16:50,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:16:50,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:16:50,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:16:50,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:16:50,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:16:50,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:16:50,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 06:16:50,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:16:50,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:16:50,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:16:50,189 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 06:16:50,215 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:16:50,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:16:50,216 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:16:50,216 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:16:50,218 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:16:50,218 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:16:50,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:16:50,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:16:50,219 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:16:50,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:16:50,220 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:16:50,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:16:50,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:16:50,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:16:50,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:16:50,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:16:50,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:16:50,221 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:16:50,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:16:50,222 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:16:50,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:16:50,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:16:50,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:16:50,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:16:50,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:16:50,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:16:50,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:16:50,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:16:50,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:16:50,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:16:50,224 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:16:50,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:16:50,224 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:16:50,224 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:16:50,225 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:16:50,225 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:16:50,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:16:50,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:16:50,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:16:50,514 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:16:50,514 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:16:50,515 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-02 06:16:51,720 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:16:51,904 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:16:51,905 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-02 06:16:51,915 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/655ce0a40/a7cd450c054040d2b5ed8b270d715419/FLAGd73485fef [2023-04-02 06:16:51,927 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/655ce0a40/a7cd450c054040d2b5ed8b270d715419 [2023-04-02 06:16:51,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:16:51,931 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:16:51,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:16:51,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:16:51,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:16:51,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:16:51" (1/1) ... [2023-04-02 06:16:51,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c44aecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:16:51, skipping insertion in model container [2023-04-02 06:16:51,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:16:51" (1/1) ... [2023-04-02 06:16:51,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:16:51,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:16:52,190 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8460,8473] [2023-04-02 06:16:52,242 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:16:52,270 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:16:52,327 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8460,8473] [2023-04-02 06:16:52,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:16:52,373 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:16:52,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:16:52 WrapperNode [2023-04-02 06:16:52,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:16:52,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:16:52,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:16:52,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:16:52,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:16:52" (1/1) ... [2023-04-02 06:16:52,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:16:52" (1/1) ... [2023-04-02 06:16:52,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:16:52" (1/1) ... [2023-04-02 06:16:52,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:16:52" (1/1) ... [2023-04-02 06:16:52,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:16:52" (1/1) ... [2023-04-02 06:16:52,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:16:52" (1/1) ... [2023-04-02 06:16:52,448 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:16:52" (1/1) ... [2023-04-02 06:16:52,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:16:52" (1/1) ... [2023-04-02 06:16:52,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:16:52,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:16:52,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:16:52,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:16:52,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:16:52" (1/1) ... [2023-04-02 06:16:52,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:16:52,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:16:52,502 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 06:16:52,523 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 06:16:52,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:16:52,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:16:52,544 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:16:52,577 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:16:52,585 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:16:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:16:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:16:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:16:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:16:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:16:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:16:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 06:16:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:16:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:16:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:16:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:16:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:16:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:16:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:16:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:16:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 06:16:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:16:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:16:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:16:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:16:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:16:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:16:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:16:52,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:16:52,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:16:52,747 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:16:52,749 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:16:53,436 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:16:53,448 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:16:53,448 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:16:53,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:16:53 BoogieIcfgContainer [2023-04-02 06:16:53,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:16:53,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:16:53,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:16:53,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:16:53,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:16:51" (1/3) ... [2023-04-02 06:16:53,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19833a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:16:53, skipping insertion in model container [2023-04-02 06:16:53,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:16:52" (2/3) ... [2023-04-02 06:16:53,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19833a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:16:53, skipping insertion in model container [2023-04-02 06:16:53,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:16:53" (3/3) ... [2023-04-02 06:16:53,460 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-02 06:16:53,477 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:16:53,477 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 06:16:53,537 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:16:53,545 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;@17f87aab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:16:53,545 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 06:16:53,550 INFO L276 IsEmpty]: Start isEmpty. Operand has 211 states, 205 states have (on average 1.7170731707317073) internal successors, (352), 206 states have internal predecessors, (352), 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 06:16:53,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-02 06:16:53,561 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:16:53,562 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] [2023-04-02 06:16:53,562 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:16:53,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:16:53,566 INFO L85 PathProgramCache]: Analyzing trace with hash -856287711, now seen corresponding path program 1 times [2023-04-02 06:16:53,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:16:53,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045088745] [2023-04-02 06:16:53,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:16:53,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:16:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:16:54,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:16:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:16:54,545 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 06:16:54,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:16:54,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045088745] [2023-04-02 06:16:54,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045088745] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:16:54,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:16:54,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:16:54,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467236040] [2023-04-02 06:16:54,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:16:54,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:16:54,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:16:54,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:16:54,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:16:54,599 INFO L87 Difference]: Start difference. First operand has 211 states, 205 states have (on average 1.7170731707317073) internal successors, (352), 206 states have internal predecessors, (352), 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 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 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 06:16:55,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:16:55,894 INFO L93 Difference]: Finished difference Result 839 states and 1350 transitions. [2023-04-02 06:16:55,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:16:55,897 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 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 83 [2023-04-02 06:16:55,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:16:55,916 INFO L225 Difference]: With dead ends: 839 [2023-04-02 06:16:55,917 INFO L226 Difference]: Without dead ends: 717 [2023-04-02 06:16:55,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:16:55,928 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 2423 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2423 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:16:55,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2423 Valid, 1688 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:16:55,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2023-04-02 06:16:56,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 318. [2023-04-02 06:16:56,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 314 states have (on average 1.5031847133757963) internal successors, (472), 314 states have internal predecessors, (472), 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 06:16:56,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 475 transitions. [2023-04-02 06:16:56,033 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 475 transitions. Word has length 83 [2023-04-02 06:16:56,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:16:56,034 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 475 transitions. [2023-04-02 06:16:56,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 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 06:16:56,035 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 475 transitions. [2023-04-02 06:16:56,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-02 06:16:56,042 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:16:56,042 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] [2023-04-02 06:16:56,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:16:56,043 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:16:56,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:16:56,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1036533918, now seen corresponding path program 1 times [2023-04-02 06:16:56,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:16:56,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877927073] [2023-04-02 06:16:56,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:16:56,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:16:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:16:56,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:16:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:16:56,512 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 06:16:56,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:16:56,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877927073] [2023-04-02 06:16:56,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877927073] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:16:56,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:16:56,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:16:56,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281610746] [2023-04-02 06:16:56,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:16:56,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:16:56,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:16:56,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:16:56,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:16:56,518 INFO L87 Difference]: Start difference. First operand 318 states and 475 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 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 06:16:57,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:16:57,491 INFO L93 Difference]: Finished difference Result 1374 states and 2128 transitions. [2023-04-02 06:16:57,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:16:57,492 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 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 84 [2023-04-02 06:16:57,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:16:57,500 INFO L225 Difference]: With dead ends: 1374 [2023-04-02 06:16:57,505 INFO L226 Difference]: Without dead ends: 1136 [2023-04-02 06:16:57,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:16:57,515 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 2093 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2093 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:16:57,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2093 Valid, 1068 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:16:57,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2023-04-02 06:16:57,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 1128. [2023-04-02 06:16:57,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 1124 states have (on average 1.545373665480427) internal successors, (1737), 1124 states have internal predecessors, (1737), 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 06:16:57,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1740 transitions. [2023-04-02 06:16:57,670 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1740 transitions. Word has length 84 [2023-04-02 06:16:57,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:16:57,672 INFO L495 AbstractCegarLoop]: Abstraction has 1128 states and 1740 transitions. [2023-04-02 06:16:57,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 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 06:16:57,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1740 transitions. [2023-04-02 06:16:57,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-02 06:16:57,678 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:16:57,678 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] [2023-04-02 06:16:57,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:16:57,678 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:16:57,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:16:57,679 INFO L85 PathProgramCache]: Analyzing trace with hash 68283484, now seen corresponding path program 1 times [2023-04-02 06:16:57,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:16:57,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491168363] [2023-04-02 06:16:57,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:16:57,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:16:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:16:57,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:16:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:16:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:16:58,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:16:58,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491168363] [2023-04-02 06:16:58,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491168363] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:16:58,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:16:58,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:16:58,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545325869] [2023-04-02 06:16:58,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:16:58,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:16:58,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:16:58,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:16:58,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:16:58,004 INFO L87 Difference]: Start difference. First operand 1128 states and 1740 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 06:16:59,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:16:59,028 INFO L93 Difference]: Finished difference Result 2873 states and 4503 transitions. [2023-04-02 06:16:59,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:16:59,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2023-04-02 06:16:59,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:16:59,037 INFO L225 Difference]: With dead ends: 2873 [2023-04-02 06:16:59,038 INFO L226 Difference]: Without dead ends: 1890 [2023-04-02 06:16:59,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:16:59,041 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 1073 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:16:59,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 304 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:16:59,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2023-04-02 06:16:59,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1888. [2023-04-02 06:16:59,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1884 states have (on average 1.5573248407643312) internal successors, (2934), 1884 states have internal predecessors, (2934), 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 06:16:59,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2937 transitions. [2023-04-02 06:16:59,279 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2937 transitions. Word has length 85 [2023-04-02 06:16:59,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:16:59,281 INFO L495 AbstractCegarLoop]: Abstraction has 1888 states and 2937 transitions. [2023-04-02 06:16:59,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 06:16:59,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2937 transitions. [2023-04-02 06:16:59,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-02 06:16:59,284 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:16:59,284 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] [2023-04-02 06:16:59,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:16:59,284 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:16:59,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:16:59,285 INFO L85 PathProgramCache]: Analyzing trace with hash -470075637, now seen corresponding path program 1 times [2023-04-02 06:16:59,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:16:59,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75018002] [2023-04-02 06:16:59,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:16:59,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:16:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:16:59,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:16:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:16:59,595 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 06:16:59,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:16:59,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75018002] [2023-04-02 06:16:59,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75018002] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:16:59,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:16:59,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:16:59,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791104603] [2023-04-02 06:16:59,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:16:59,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:16:59,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:16:59,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:16:59,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:16:59,598 INFO L87 Difference]: Start difference. First operand 1888 states and 2937 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 06:17:00,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:17:00,783 INFO L93 Difference]: Finished difference Result 5195 states and 8154 transitions. [2023-04-02 06:17:00,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:17:00,785 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2023-04-02 06:17:00,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:17:00,804 INFO L225 Difference]: With dead ends: 5195 [2023-04-02 06:17:00,804 INFO L226 Difference]: Without dead ends: 3418 [2023-04-02 06:17:00,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:17:00,816 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 1079 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:17:00,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1079 Valid, 293 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:17:00,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3418 states. [2023-04-02 06:17:01,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3418 to 3416. [2023-04-02 06:17:01,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3416 states, 3412 states have (on average 1.5612543962485346) internal successors, (5327), 3412 states have internal predecessors, (5327), 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 06:17:01,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3416 states to 3416 states and 5330 transitions. [2023-04-02 06:17:01,210 INFO L78 Accepts]: Start accepts. Automaton has 3416 states and 5330 transitions. Word has length 85 [2023-04-02 06:17:01,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:17:01,210 INFO L495 AbstractCegarLoop]: Abstraction has 3416 states and 5330 transitions. [2023-04-02 06:17:01,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 06:17:01,211 INFO L276 IsEmpty]: Start isEmpty. Operand 3416 states and 5330 transitions. [2023-04-02 06:17:01,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-02 06:17:01,213 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:17:01,213 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] [2023-04-02 06:17:01,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:17:01,213 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:17:01,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:17:01,214 INFO L85 PathProgramCache]: Analyzing trace with hash -2001220166, now seen corresponding path program 1 times [2023-04-02 06:17:01,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:17:01,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590770417] [2023-04-02 06:17:01,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:17:01,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:17:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:01,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:17:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:01,492 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 06:17:01,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:17:01,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590770417] [2023-04-02 06:17:01,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590770417] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:17:01,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:17:01,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:17:01,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324654952] [2023-04-02 06:17:01,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:17:01,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:17:01,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:17:01,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:17:01,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:17:01,499 INFO L87 Difference]: Start difference. First operand 3416 states and 5330 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 06:17:03,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:17:03,006 INFO L93 Difference]: Finished difference Result 9847 states and 15443 transitions. [2023-04-02 06:17:03,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:17:03,007 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2023-04-02 06:17:03,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:17:03,037 INFO L225 Difference]: With dead ends: 9847 [2023-04-02 06:17:03,037 INFO L226 Difference]: Without dead ends: 6512 [2023-04-02 06:17:03,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:17:03,044 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1101 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:17:03,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 293 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:17:03,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6512 states. [2023-04-02 06:17:03,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6512 to 6510. [2023-04-02 06:17:03,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6510 states, 6506 states have (on average 1.5599446664617276) internal successors, (10149), 6506 states have internal predecessors, (10149), 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 06:17:03,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6510 states to 6510 states and 10152 transitions. [2023-04-02 06:17:03,833 INFO L78 Accepts]: Start accepts. Automaton has 6510 states and 10152 transitions. Word has length 85 [2023-04-02 06:17:03,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:17:03,833 INFO L495 AbstractCegarLoop]: Abstraction has 6510 states and 10152 transitions. [2023-04-02 06:17:03,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 06:17:03,833 INFO L276 IsEmpty]: Start isEmpty. Operand 6510 states and 10152 transitions. [2023-04-02 06:17:03,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-02 06:17:03,836 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:17:03,836 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] [2023-04-02 06:17:03,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:17:03,837 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:17:03,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:17:03,837 INFO L85 PathProgramCache]: Analyzing trace with hash -482873239, now seen corresponding path program 1 times [2023-04-02 06:17:03,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:17:03,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416126675] [2023-04-02 06:17:03,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:17:03,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:17:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:04,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:17:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:04,130 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 06:17:04,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:17:04,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416126675] [2023-04-02 06:17:04,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416126675] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:17:04,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:17:04,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:17:04,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107551873] [2023-04-02 06:17:04,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:17:04,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:17:04,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:17:04,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:17:04,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:17:04,132 INFO L87 Difference]: Start difference. First operand 6510 states and 10152 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 06:17:05,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:17:05,988 INFO L93 Difference]: Finished difference Result 19184 states and 30002 transitions. [2023-04-02 06:17:05,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:17:05,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2023-04-02 06:17:05,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:17:06,049 INFO L225 Difference]: With dead ends: 19184 [2023-04-02 06:17:06,049 INFO L226 Difference]: Without dead ends: 12732 [2023-04-02 06:17:06,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:17:06,065 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 1131 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:17:06,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1131 Valid, 289 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:17:06,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12732 states. [2023-04-02 06:17:07,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12732 to 12730. [2023-04-02 06:17:07,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12730 states, 12726 states have (on average 1.5544554455445545) internal successors, (19782), 12726 states have internal predecessors, (19782), 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 06:17:07,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12730 states to 12730 states and 19785 transitions. [2023-04-02 06:17:07,711 INFO L78 Accepts]: Start accepts. Automaton has 12730 states and 19785 transitions. Word has length 85 [2023-04-02 06:17:07,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:17:07,711 INFO L495 AbstractCegarLoop]: Abstraction has 12730 states and 19785 transitions. [2023-04-02 06:17:07,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 06:17:07,712 INFO L276 IsEmpty]: Start isEmpty. Operand 12730 states and 19785 transitions. [2023-04-02 06:17:07,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-02 06:17:07,716 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:17:07,716 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] [2023-04-02 06:17:07,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:17:07,717 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:17:07,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:17:07,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1780809523, now seen corresponding path program 1 times [2023-04-02 06:17:07,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:17:07,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940789187] [2023-04-02 06:17:07,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:17:07,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:17:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:08,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:17:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:08,177 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 06:17:08,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:17:08,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940789187] [2023-04-02 06:17:08,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940789187] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:17:08,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:17:08,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:17:08,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342969107] [2023-04-02 06:17:08,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:17:08,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:17:08,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:17:08,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:17:08,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:17:08,180 INFO L87 Difference]: Start difference. First operand 12730 states and 19785 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 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 06:17:11,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:17:11,628 INFO L93 Difference]: Finished difference Result 25212 states and 39082 transitions. [2023-04-02 06:17:11,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:17:11,629 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 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 86 [2023-04-02 06:17:11,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:17:11,701 INFO L225 Difference]: With dead ends: 25212 [2023-04-02 06:17:11,701 INFO L226 Difference]: Without dead ends: 25210 [2023-04-02 06:17:11,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:17:11,714 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 288 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:17:11,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 1202 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:17:11,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25210 states. [2023-04-02 06:17:13,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25210 to 13050. [2023-04-02 06:17:13,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13050 states, 13046 states have (on average 1.5408554346159742) internal successors, (20102), 13046 states have internal predecessors, (20102), 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 06:17:13,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13050 states to 13050 states and 20105 transitions. [2023-04-02 06:17:13,569 INFO L78 Accepts]: Start accepts. Automaton has 13050 states and 20105 transitions. Word has length 86 [2023-04-02 06:17:13,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:17:13,569 INFO L495 AbstractCegarLoop]: Abstraction has 13050 states and 20105 transitions. [2023-04-02 06:17:13,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 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 06:17:13,569 INFO L276 IsEmpty]: Start isEmpty. Operand 13050 states and 20105 transitions. [2023-04-02 06:17:13,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-02 06:17:13,574 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:17:13,574 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] [2023-04-02 06:17:13,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:17:13,575 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:17:13,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:17:13,575 INFO L85 PathProgramCache]: Analyzing trace with hash 889820556, now seen corresponding path program 1 times [2023-04-02 06:17:13,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:17:13,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875861004] [2023-04-02 06:17:13,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:17:13,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:17:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:14,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:17:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:14,109 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 06:17:14,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:17:14,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875861004] [2023-04-02 06:17:14,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875861004] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:17:14,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:17:14,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:17:14,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118412080] [2023-04-02 06:17:14,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:17:14,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:17:14,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:17:14,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:17:14,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:17:14,111 INFO L87 Difference]: Start difference. First operand 13050 states and 20105 transitions. Second operand has 11 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 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 06:17:19,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:17:19,426 INFO L93 Difference]: Finished difference Result 33498 states and 51265 transitions. [2023-04-02 06:17:19,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 06:17:19,426 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2023-04-02 06:17:19,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:17:19,512 INFO L225 Difference]: With dead ends: 33498 [2023-04-02 06:17:19,513 INFO L226 Difference]: Without dead ends: 31991 [2023-04-02 06:17:19,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2023-04-02 06:17:19,530 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 1577 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 1562 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:17:19,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 1493 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1562 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 06:17:19,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31991 states. [2023-04-02 06:17:21,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31991 to 13050. [2023-04-02 06:17:21,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13050 states, 13046 states have (on average 1.5407787827686648) internal successors, (20101), 13046 states have internal predecessors, (20101), 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 06:17:21,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13050 states to 13050 states and 20104 transitions. [2023-04-02 06:17:21,333 INFO L78 Accepts]: Start accepts. Automaton has 13050 states and 20104 transitions. Word has length 87 [2023-04-02 06:17:21,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:17:21,334 INFO L495 AbstractCegarLoop]: Abstraction has 13050 states and 20104 transitions. [2023-04-02 06:17:21,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 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 06:17:21,334 INFO L276 IsEmpty]: Start isEmpty. Operand 13050 states and 20104 transitions. [2023-04-02 06:17:21,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-02 06:17:21,339 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:17:21,339 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] [2023-04-02 06:17:21,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:17:21,339 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:17:21,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:17:21,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1038899500, now seen corresponding path program 1 times [2023-04-02 06:17:21,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:17:21,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783303780] [2023-04-02 06:17:21,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:17:21,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:17:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:21,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:17:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:21,798 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 06:17:21,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:17:21,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783303780] [2023-04-02 06:17:21,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783303780] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:17:21,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:17:21,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:17:21,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351543543] [2023-04-02 06:17:21,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:17:21,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:17:21,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:17:21,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:17:21,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:17:21,800 INFO L87 Difference]: Start difference. First operand 13050 states and 20104 transitions. Second operand has 11 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 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 06:17:28,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:17:28,132 INFO L93 Difference]: Finished difference Result 41811 states and 63700 transitions. [2023-04-02 06:17:28,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-02 06:17:28,133 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2023-04-02 06:17:28,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:17:28,227 INFO L225 Difference]: With dead ends: 41811 [2023-04-02 06:17:28,228 INFO L226 Difference]: Without dead ends: 37633 [2023-04-02 06:17:28,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=243, Invalid=749, Unknown=0, NotChecked=0, Total=992 [2023-04-02 06:17:28,253 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 1968 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1968 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:17:28,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1968 Valid, 1415 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 06:17:28,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37633 states. [2023-04-02 06:17:30,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37633 to 13275. [2023-04-02 06:17:30,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13275 states, 13271 states have (on average 1.5396729711400798) internal successors, (20433), 13271 states have internal predecessors, (20433), 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 06:17:30,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13275 states to 13275 states and 20436 transitions. [2023-04-02 06:17:30,472 INFO L78 Accepts]: Start accepts. Automaton has 13275 states and 20436 transitions. Word has length 87 [2023-04-02 06:17:30,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:17:30,472 INFO L495 AbstractCegarLoop]: Abstraction has 13275 states and 20436 transitions. [2023-04-02 06:17:30,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 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 06:17:30,472 INFO L276 IsEmpty]: Start isEmpty. Operand 13275 states and 20436 transitions. [2023-04-02 06:17:30,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-02 06:17:30,477 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:17:30,478 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] [2023-04-02 06:17:30,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:17:30,478 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:17:30,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:17:30,478 INFO L85 PathProgramCache]: Analyzing trace with hash -961880884, now seen corresponding path program 1 times [2023-04-02 06:17:30,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:17:30,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680533117] [2023-04-02 06:17:30,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:17:30,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:17:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:30,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:17:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:30,947 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 06:17:30,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:17:30,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680533117] [2023-04-02 06:17:30,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680533117] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:17:30,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:17:30,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:17:30,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365100723] [2023-04-02 06:17:30,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:17:30,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:17:30,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:17:30,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:17:30,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:17:30,949 INFO L87 Difference]: Start difference. First operand 13275 states and 20436 transitions. Second operand has 11 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 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 06:17:39,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:17:39,398 INFO L93 Difference]: Finished difference Result 53303 states and 81446 transitions. [2023-04-02 06:17:39,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-02 06:17:39,398 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2023-04-02 06:17:39,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:17:39,498 INFO L225 Difference]: With dead ends: 53303 [2023-04-02 06:17:39,498 INFO L226 Difference]: Without dead ends: 46485 [2023-04-02 06:17:39,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=217, Invalid=653, Unknown=0, NotChecked=0, Total=870 [2023-04-02 06:17:39,531 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 2173 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 1675 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2173 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:17:39,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2173 Valid, 1458 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1675 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 06:17:39,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46485 states. [2023-04-02 06:17:42,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46485 to 13535. [2023-04-02 06:17:42,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13535 states, 13531 states have (on average 1.5362500923804596) internal successors, (20787), 13531 states have internal predecessors, (20787), 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 06:17:42,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13535 states to 13535 states and 20790 transitions. [2023-04-02 06:17:42,091 INFO L78 Accepts]: Start accepts. Automaton has 13535 states and 20790 transitions. Word has length 87 [2023-04-02 06:17:42,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:17:42,092 INFO L495 AbstractCegarLoop]: Abstraction has 13535 states and 20790 transitions. [2023-04-02 06:17:42,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 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 06:17:42,092 INFO L276 IsEmpty]: Start isEmpty. Operand 13535 states and 20790 transitions. [2023-04-02 06:17:42,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-02 06:17:42,098 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:17:42,098 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] [2023-04-02 06:17:42,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:17:42,098 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:17:42,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:17:42,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1704796268, now seen corresponding path program 1 times [2023-04-02 06:17:42,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:17:42,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451646611] [2023-04-02 06:17:42,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:17:42,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:17:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:42,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:17:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:42,539 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 06:17:42,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:17:42,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451646611] [2023-04-02 06:17:42,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451646611] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:17:42,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:17:42,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:17:42,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30715053] [2023-04-02 06:17:42,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:17:42,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:17:42,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:17:42,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:17:42,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:17:42,542 INFO L87 Difference]: Start difference. First operand 13535 states and 20790 transitions. Second operand has 11 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 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 06:17:53,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:17:53,808 INFO L93 Difference]: Finished difference Result 62967 states and 96048 transitions. [2023-04-02 06:17:53,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-02 06:17:53,809 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2023-04-02 06:17:53,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:17:53,925 INFO L225 Difference]: With dead ends: 62967 [2023-04-02 06:17:53,926 INFO L226 Difference]: Without dead ends: 53645 [2023-04-02 06:17:53,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=217, Invalid=653, Unknown=0, NotChecked=0, Total=870 [2023-04-02 06:17:53,964 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 1785 mSDsluCounter, 1212 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1785 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:17:53,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1785 Valid, 1527 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1777 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:17:54,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53645 states. [2023-04-02 06:17:56,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53645 to 13839. [2023-04-02 06:17:56,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13839 states, 13835 states have (on average 1.5311890133718828) internal successors, (21184), 13835 states have internal predecessors, (21184), 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 06:17:56,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13839 states to 13839 states and 21187 transitions. [2023-04-02 06:17:56,945 INFO L78 Accepts]: Start accepts. Automaton has 13839 states and 21187 transitions. Word has length 87 [2023-04-02 06:17:56,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:17:56,945 INFO L495 AbstractCegarLoop]: Abstraction has 13839 states and 21187 transitions. [2023-04-02 06:17:56,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 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 06:17:56,945 INFO L276 IsEmpty]: Start isEmpty. Operand 13839 states and 21187 transitions. [2023-04-02 06:17:56,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-02 06:17:56,952 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:17:56,952 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] [2023-04-02 06:17:56,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:17:56,953 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:17:56,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:17:56,953 INFO L85 PathProgramCache]: Analyzing trace with hash 118628697, now seen corresponding path program 1 times [2023-04-02 06:17:56,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:17:56,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615650528] [2023-04-02 06:17:56,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:17:56,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:17:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:57,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:17:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:57,210 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 06:17:57,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:17:57,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615650528] [2023-04-02 06:17:57,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615650528] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:17:57,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:17:57,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:17:57,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253179734] [2023-04-02 06:17:57,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:17:57,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:17:57,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:17:57,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:17:57,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:17:57,212 INFO L87 Difference]: Start difference. First operand 13839 states and 21187 transitions. Second operand has 6 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 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 06:18:03,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:18:03,165 INFO L93 Difference]: Finished difference Result 38551 states and 59136 transitions. [2023-04-02 06:18:03,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:18:03,166 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2023-04-02 06:18:03,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:18:03,202 INFO L225 Difference]: With dead ends: 38551 [2023-04-02 06:18:03,203 INFO L226 Difference]: Without dead ends: 24779 [2023-04-02 06:18:03,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:18:03,231 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 942 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:18:03,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 358 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:18:03,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24779 states. [2023-04-02 06:18:08,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24779 to 24777. [2023-04-02 06:18:08,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24777 states, 24773 states have (on average 1.5282363863884068) internal successors, (37859), 24773 states have internal predecessors, (37859), 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 06:18:08,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24777 states to 24777 states and 37862 transitions. [2023-04-02 06:18:08,330 INFO L78 Accepts]: Start accepts. Automaton has 24777 states and 37862 transitions. Word has length 87 [2023-04-02 06:18:08,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:18:08,330 INFO L495 AbstractCegarLoop]: Abstraction has 24777 states and 37862 transitions. [2023-04-02 06:18:08,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 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 06:18:08,331 INFO L276 IsEmpty]: Start isEmpty. Operand 24777 states and 37862 transitions. [2023-04-02 06:18:08,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-02 06:18:08,340 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:18:08,341 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] [2023-04-02 06:18:08,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:18:08,341 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:18:08,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:18:08,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1441214420, now seen corresponding path program 1 times [2023-04-02 06:18:08,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:18:08,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954578366] [2023-04-02 06:18:08,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:18:08,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:18:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:08,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:18:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:08,534 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 06:18:08,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:18:08,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954578366] [2023-04-02 06:18:08,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954578366] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:18:08,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:18:08,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:18:08,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582530377] [2023-04-02 06:18:08,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:18:08,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:18:08,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:18:08,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:18:08,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:18:08,537 INFO L87 Difference]: Start difference. First operand 24777 states and 37862 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 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 06:18:15,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:18:15,993 INFO L93 Difference]: Finished difference Result 55467 states and 84816 transitions. [2023-04-02 06:18:15,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:18:15,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 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 88 [2023-04-02 06:18:15,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:18:16,047 INFO L225 Difference]: With dead ends: 55467 [2023-04-02 06:18:16,047 INFO L226 Difference]: Without dead ends: 34077 [2023-04-02 06:18:16,075 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 06:18:16,076 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 204 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:18:16,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 556 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:18:16,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34077 states. [2023-04-02 06:18:21,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34077 to 24251. [2023-04-02 06:18:21,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24251 states, 24247 states have (on average 1.5092176351713613) internal successors, (36594), 24247 states have internal predecessors, (36594), 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 06:18:21,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24251 states to 24251 states and 36597 transitions. [2023-04-02 06:18:21,277 INFO L78 Accepts]: Start accepts. Automaton has 24251 states and 36597 transitions. Word has length 88 [2023-04-02 06:18:21,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:18:21,278 INFO L495 AbstractCegarLoop]: Abstraction has 24251 states and 36597 transitions. [2023-04-02 06:18:21,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 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 06:18:21,278 INFO L276 IsEmpty]: Start isEmpty. Operand 24251 states and 36597 transitions. [2023-04-02 06:18:21,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-02 06:18:21,288 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:18:21,288 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] [2023-04-02 06:18:21,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:18:21,288 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:18:21,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:18:21,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1738109828, now seen corresponding path program 1 times [2023-04-02 06:18:21,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:18:21,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498886005] [2023-04-02 06:18:21,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:18:21,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:18:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:21,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:18:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:21,647 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 06:18:21,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:18:21,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498886005] [2023-04-02 06:18:21,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498886005] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:18:21,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:18:21,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:18:21,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160336735] [2023-04-02 06:18:21,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:18:21,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 06:18:21,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:18:21,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 06:18:21,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:18:21,650 INFO L87 Difference]: Start difference. First operand 24251 states and 36597 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 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 06:18:31,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:18:31,417 INFO L93 Difference]: Finished difference Result 66399 states and 100663 transitions. [2023-04-02 06:18:31,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:18:31,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 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 88 [2023-04-02 06:18:31,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:18:31,488 INFO L225 Difference]: With dead ends: 66399 [2023-04-02 06:18:31,488 INFO L226 Difference]: Without dead ends: 44445 [2023-04-02 06:18:31,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:18:31,510 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 192 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:18:31,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 700 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:18:31,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44445 states. [2023-04-02 06:18:40,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44445 to 44155. [2023-04-02 06:18:41,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44155 states, 44151 states have (on average 1.5028878168104913) internal successors, (66354), 44151 states have internal predecessors, (66354), 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 06:18:41,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44155 states to 44155 states and 66357 transitions. [2023-04-02 06:18:41,100 INFO L78 Accepts]: Start accepts. Automaton has 44155 states and 66357 transitions. Word has length 88 [2023-04-02 06:18:41,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:18:41,100 INFO L495 AbstractCegarLoop]: Abstraction has 44155 states and 66357 transitions. [2023-04-02 06:18:41,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 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 06:18:41,101 INFO L276 IsEmpty]: Start isEmpty. Operand 44155 states and 66357 transitions. [2023-04-02 06:18:41,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-02 06:18:41,110 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:18:41,110 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] [2023-04-02 06:18:41,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:18:41,110 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:18:41,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:18:41,111 INFO L85 PathProgramCache]: Analyzing trace with hash 400922725, now seen corresponding path program 1 times [2023-04-02 06:18:41,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:18:41,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029372386] [2023-04-02 06:18:41,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:18:41,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:18:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:41,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:18:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:41,311 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 06:18:41,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:18:41,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029372386] [2023-04-02 06:18:41,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029372386] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:18:41,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:18:41,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:18:41,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298767862] [2023-04-02 06:18:41,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:18:41,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:18:41,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:18:41,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:18:41,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:18:41,313 INFO L87 Difference]: Start difference. First operand 44155 states and 66357 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 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 06:18:53,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:18:53,042 INFO L93 Difference]: Finished difference Result 59170 states and 88825 transitions. [2023-04-02 06:18:53,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:18:53,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 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 88 [2023-04-02 06:18:53,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:18:53,123 INFO L225 Difference]: With dead ends: 59170 [2023-04-02 06:18:53,123 INFO L226 Difference]: Without dead ends: 48292 [2023-04-02 06:18:53,142 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 06:18:53,143 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 169 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:18:53,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 650 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:18:53,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48292 states. [2023-04-02 06:19:03,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48292 to 43362. [2023-04-02 06:19:03,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43362 states, 43358 states have (on average 1.4822178144748375) internal successors, (64266), 43358 states have internal predecessors, (64266), 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 06:19:03,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43362 states to 43362 states and 64269 transitions. [2023-04-02 06:19:03,461 INFO L78 Accepts]: Start accepts. Automaton has 43362 states and 64269 transitions. Word has length 88 [2023-04-02 06:19:03,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:19:03,461 INFO L495 AbstractCegarLoop]: Abstraction has 43362 states and 64269 transitions. [2023-04-02 06:19:03,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 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 06:19:03,461 INFO L276 IsEmpty]: Start isEmpty. Operand 43362 states and 64269 transitions. [2023-04-02 06:19:03,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-02 06:19:03,468 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:19:03,468 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] [2023-04-02 06:19:03,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:19:03,468 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:19:03,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:19:03,469 INFO L85 PathProgramCache]: Analyzing trace with hash -549364566, now seen corresponding path program 1 times [2023-04-02 06:19:03,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:19:03,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868571480] [2023-04-02 06:19:03,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:19:03,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:19:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:19:03,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:19:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:19:03,669 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 06:19:03,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:19:03,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868571480] [2023-04-02 06:19:03,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868571480] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:19:03,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:19:03,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:19:03,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483256059] [2023-04-02 06:19:03,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:19:03,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:19:03,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:19:03,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:19:03,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:19:03,671 INFO L87 Difference]: Start difference. First operand 43362 states and 64269 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 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 06:19:16,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:19:16,360 INFO L93 Difference]: Finished difference Result 68776 states and 102105 transitions. [2023-04-02 06:19:16,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:19:16,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 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 88 [2023-04-02 06:19:16,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:19:16,440 INFO L225 Difference]: With dead ends: 68776 [2023-04-02 06:19:16,441 INFO L226 Difference]: Without dead ends: 48970 [2023-04-02 06:19:16,467 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 06:19:16,468 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 175 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:19:16,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 586 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:19:16,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48970 states. [2023-04-02 06:19:28,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48970 to 48488. [2023-04-02 06:19:28,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48488 states, 48484 states have (on average 1.4608943156505239) internal successors, (70830), 48484 states have internal predecessors, (70830), 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 06:19:28,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48488 states to 48488 states and 70833 transitions. [2023-04-02 06:19:28,540 INFO L78 Accepts]: Start accepts. Automaton has 48488 states and 70833 transitions. Word has length 88 [2023-04-02 06:19:28,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:19:28,541 INFO L495 AbstractCegarLoop]: Abstraction has 48488 states and 70833 transitions. [2023-04-02 06:19:28,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 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 06:19:28,541 INFO L276 IsEmpty]: Start isEmpty. Operand 48488 states and 70833 transitions. [2023-04-02 06:19:28,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-02 06:19:28,548 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:19:28,548 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] [2023-04-02 06:19:28,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:19:28,548 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:19:28,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:19:28,548 INFO L85 PathProgramCache]: Analyzing trace with hash 643495180, now seen corresponding path program 1 times [2023-04-02 06:19:28,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:19:28,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652999564] [2023-04-02 06:19:28,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:19:28,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:19:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:19:28,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:19:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:19:28,729 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 06:19:28,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:19:28,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652999564] [2023-04-02 06:19:28,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652999564] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:19:28,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:19:28,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:19:28,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227492325] [2023-04-02 06:19:28,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:19:28,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:19:28,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:19:28,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:19:28,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:19:28,731 INFO L87 Difference]: Start difference. First operand 48488 states and 70833 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 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 06:19:44,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:19:44,585 INFO L93 Difference]: Finished difference Result 91988 states and 134423 transitions. [2023-04-02 06:19:44,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:19:44,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 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 88 [2023-04-02 06:19:44,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:19:44,683 INFO L225 Difference]: With dead ends: 91988 [2023-04-02 06:19:44,683 INFO L226 Difference]: Without dead ends: 57674 [2023-04-02 06:19:44,719 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 06:19:44,720 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 185 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:19:44,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 539 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:19:44,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57674 states. [2023-04-02 06:19:59,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57674 to 57144. [2023-04-02 06:19:59,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57144 states, 57140 states have (on average 1.4352467623381169) internal successors, (82010), 57140 states have internal predecessors, (82010), 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 06:19:59,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57144 states to 57144 states and 82013 transitions. [2023-04-02 06:19:59,487 INFO L78 Accepts]: Start accepts. Automaton has 57144 states and 82013 transitions. Word has length 88 [2023-04-02 06:19:59,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:19:59,487 INFO L495 AbstractCegarLoop]: Abstraction has 57144 states and 82013 transitions. [2023-04-02 06:19:59,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 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 06:19:59,487 INFO L276 IsEmpty]: Start isEmpty. Operand 57144 states and 82013 transitions. [2023-04-02 06:19:59,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-02 06:19:59,495 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:19:59,495 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] [2023-04-02 06:19:59,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 06:19:59,496 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:19:59,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:19:59,496 INFO L85 PathProgramCache]: Analyzing trace with hash 601606413, now seen corresponding path program 1 times [2023-04-02 06:19:59,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:19:59,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693203562] [2023-04-02 06:19:59,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:19:59,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:19:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:19:59,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:19:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:19:59,731 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 06:19:59,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:19:59,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693203562] [2023-04-02 06:19:59,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693203562] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:19:59,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:19:59,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:19:59,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560008510] [2023-04-02 06:19:59,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:19:59,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:19:59,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:19:59,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:19:59,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:19:59,733 INFO L87 Difference]: Start difference. First operand 57144 states and 82013 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 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 06:20:30,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:20:30,905 INFO L93 Difference]: Finished difference Result 122274 states and 176731 transitions. [2023-04-02 06:20:30,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:20:30,909 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 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 89 [2023-04-02 06:20:30,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:20:31,146 INFO L225 Difference]: With dead ends: 122274 [2023-04-02 06:20:31,147 INFO L226 Difference]: Without dead ends: 117160 [2023-04-02 06:20:31,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 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 06:20:31,179 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 1741 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1741 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:20:31,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1741 Valid, 1627 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:20:31,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117160 states. [2023-04-02 06:20:48,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117160 to 62184. [2023-04-02 06:20:48,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62184 states, 62180 states have (on average 1.4357671276937922) internal successors, (89276), 62180 states have internal predecessors, (89276), 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 06:20:48,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62184 states to 62184 states and 89279 transitions. [2023-04-02 06:20:48,912 INFO L78 Accepts]: Start accepts. Automaton has 62184 states and 89279 transitions. Word has length 89 [2023-04-02 06:20:48,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:20:48,913 INFO L495 AbstractCegarLoop]: Abstraction has 62184 states and 89279 transitions. [2023-04-02 06:20:48,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 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 06:20:48,913 INFO L276 IsEmpty]: Start isEmpty. Operand 62184 states and 89279 transitions. [2023-04-02 06:20:48,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-02 06:20:48,920 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:20:48,920 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] [2023-04-02 06:20:48,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 06:20:48,920 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:20:48,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:20:48,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1374058674, now seen corresponding path program 1 times [2023-04-02 06:20:48,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:20:48,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783074557] [2023-04-02 06:20:48,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:20:48,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:20:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:20:49,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:20:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:20:49,112 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 06:20:49,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:20:49,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783074557] [2023-04-02 06:20:49,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783074557] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:20:49,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:20:49,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:20:49,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293050857] [2023-04-02 06:20:49,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:20:49,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:20:49,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:20:49,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:20:49,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:20:49,114 INFO L87 Difference]: Start difference. First operand 62184 states and 89279 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 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)