/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.8.1.ufo.BOUNDED-16.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:46:26,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:46:26,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:46:26,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:46:26,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:46:26,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:46:26,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:46:26,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:46:26,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:46:26,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:46:26,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:46:26,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:46:26,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:46:26,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:46:26,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:46:26,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:46:26,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:46:26,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:46:26,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:46:26,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:46:26,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:46:26,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:46:26,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:46:26,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:46:26,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 06:46:26,372 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 06:46:26,372 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 06:46:26,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 06:46:26,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 06:46:26,374 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2023-04-02 06:46:26,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:46:26,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:46:26,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:46:26,379 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 06:46:26,402 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:46:26,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:46:26,402 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:46:26,402 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:46:26,403 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:46:26,403 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:46:26,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:46:26,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:46:26,404 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:46:26,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:46:26,404 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:46:26,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:46:26,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:46:26,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:46:26,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:46:26,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:46:26,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:46:26,405 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:46:26,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:46:26,405 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:46:26,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:46:26,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:46:26,405 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:46:26,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:46:26,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:46:26,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:46:26,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:46:26,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:46:26,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:46:26,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:46:26,406 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:46:26,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:46:26,407 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:46:26,407 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:46:26,407 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:46:26,407 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:46:26,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:46:26,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:46:26,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:46:26,629 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:46:26,630 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:46:26,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+cfa-reducer.c [2023-04-02 06:46:27,577 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:46:27,765 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:46:27,765 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+cfa-reducer.c [2023-04-02 06:46:27,772 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6954a37b8/65e5d4e0e890482a9d788010a97fea98/FLAGba75b03ca [2023-04-02 06:46:27,781 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6954a37b8/65e5d4e0e890482a9d788010a97fea98 [2023-04-02 06:46:27,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:46:27,784 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:46:27,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:46:27,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:46:27,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:46:27,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:46:27" (1/1) ... [2023-04-02 06:46:27,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@605ad55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:46:27, skipping insertion in model container [2023-04-02 06:46:27,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:46:27" (1/1) ... [2023-04-02 06:46:27,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:46:27,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:46:28,012 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.8.1.ufo.BOUNDED-16.pals.c.v+cfa-reducer.c[8604,8617] [2023-04-02 06:46:28,041 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:46:28,064 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:46:28,099 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.8.1.ufo.BOUNDED-16.pals.c.v+cfa-reducer.c[8604,8617] [2023-04-02 06:46:28,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:46:28,134 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:46:28,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:46:28 WrapperNode [2023-04-02 06:46:28,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:46:28,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:46:28,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:46:28,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:46:28,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:46:28" (1/1) ... [2023-04-02 06:46:28,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:46:28" (1/1) ... [2023-04-02 06:46:28,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:46:28" (1/1) ... [2023-04-02 06:46:28,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:46:28" (1/1) ... [2023-04-02 06:46:28,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:46:28" (1/1) ... [2023-04-02 06:46:28,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:46:28" (1/1) ... [2023-04-02 06:46:28,176 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:46:28" (1/1) ... [2023-04-02 06:46:28,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:46:28" (1/1) ... [2023-04-02 06:46:28,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:46:28,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:46:28,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:46:28,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:46:28,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:46:28" (1/1) ... [2023-04-02 06:46:28,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:46:28,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:46:28,228 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 06:46:28,247 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 06:46:28,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:46:28,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:46:28,259 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:46:28,259 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:46:28,259 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:46:28,259 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:46:28,259 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:46:28,259 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:46:28,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:46:28,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:46:28,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:46:28,260 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:46:28,260 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:46:28,260 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:46:28,260 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:46:28,260 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:46:28,260 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:46:28,260 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:46:28,260 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:46:28,260 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 06:46:28,260 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-02 06:46:28,261 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2023-04-02 06:46:28,261 INFO L130 BoogieDeclarations]: Found specification of procedure node8 [2023-04-02 06:46:28,261 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:46:28,261 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:46:28,261 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:46:28,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:46:28,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:46:28,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:46:28,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:46:28,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:46:28,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:46:28,412 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:46:28,413 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:46:28,904 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:46:28,913 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:46:28,913 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:46:28,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:46:28 BoogieIcfgContainer [2023-04-02 06:46:28,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:46:28,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:46:28,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:46:28,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:46:28,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:46:27" (1/3) ... [2023-04-02 06:46:28,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c94b8b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:46:28, skipping insertion in model container [2023-04-02 06:46:28,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:46:28" (2/3) ... [2023-04-02 06:46:28,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c94b8b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:46:28, skipping insertion in model container [2023-04-02 06:46:28,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:46:28" (3/3) ... [2023-04-02 06:46:28,922 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+cfa-reducer.c [2023-04-02 06:46:28,933 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:46:28,933 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 06:46:28,972 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:46:28,977 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;@50aa7032, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:46:28,977 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 06:46:28,981 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 156 states have (on average 1.7564102564102564) internal successors, (274), 158 states have internal predecessors, (274), 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 06:46:28,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 06:46:28,990 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:28,991 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:46:28,991 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:28,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:28,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1069673650, now seen corresponding path program 1 times [2023-04-02 06:46:29,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:29,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825333395] [2023-04-02 06:46:29,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:29,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:29,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:29,701 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 06:46:29,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:29,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825333395] [2023-04-02 06:46:29,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825333395] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:29,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:29,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:46:29,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896100209] [2023-04-02 06:46:29,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:29,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:46:29,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:29,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:46:29,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:46:29,727 INFO L87 Difference]: Start difference. First operand has 163 states, 156 states have (on average 1.7564102564102564) internal successors, (274), 158 states have internal predecessors, (274), 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 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 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 06:46:30,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:30,672 INFO L93 Difference]: Finished difference Result 345 states and 561 transitions. [2023-04-02 06:46:30,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:46:30,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 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 105 [2023-04-02 06:46:30,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:30,684 INFO L225 Difference]: With dead ends: 345 [2023-04-02 06:46:30,684 INFO L226 Difference]: Without dead ends: 238 [2023-04-02 06:46:30,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:46:30,694 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 197 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:30,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 555 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:46:30,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-04-02 06:46:30,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2023-04-02 06:46:30,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 232 states have (on average 1.4224137931034482) internal successors, (330), 232 states have internal predecessors, (330), 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 06:46:30,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 333 transitions. [2023-04-02 06:46:30,748 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 333 transitions. Word has length 105 [2023-04-02 06:46:30,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:30,748 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 333 transitions. [2023-04-02 06:46:30,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 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 06:46:30,748 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 333 transitions. [2023-04-02 06:46:30,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-04-02 06:46:30,750 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:30,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:46:30,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:46:30,751 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:30,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:30,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1681631658, now seen corresponding path program 1 times [2023-04-02 06:46:30,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:30,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076917084] [2023-04-02 06:46:30,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:30,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:31,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:31,046 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 06:46:31,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:31,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076917084] [2023-04-02 06:46:31,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076917084] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:31,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:31,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:46:31,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786972395] [2023-04-02 06:46:31,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:31,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:46:31,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:31,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:46:31,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:46:31,066 INFO L87 Difference]: Start difference. First operand 236 states and 333 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 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 06:46:31,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:31,686 INFO L93 Difference]: Finished difference Result 556 states and 837 transitions. [2023-04-02 06:46:31,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:46:31,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 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 106 [2023-04-02 06:46:31,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:31,695 INFO L225 Difference]: With dead ends: 556 [2023-04-02 06:46:31,695 INFO L226 Difference]: Without dead ends: 388 [2023-04-02 06:46:31,700 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 06:46:31,702 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 128 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:31,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 462 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:46:31,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-04-02 06:46:31,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 386. [2023-04-02 06:46:31,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 382 states have (on average 1.4816753926701571) internal successors, (566), 382 states have internal predecessors, (566), 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 06:46:31,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 569 transitions. [2023-04-02 06:46:31,736 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 569 transitions. Word has length 106 [2023-04-02 06:46:31,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:31,737 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 569 transitions. [2023-04-02 06:46:31,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 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 06:46:31,737 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 569 transitions. [2023-04-02 06:46:31,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-04-02 06:46:31,745 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:31,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:46:31,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:46:31,745 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:31,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:31,746 INFO L85 PathProgramCache]: Analyzing trace with hash 359080095, now seen corresponding path program 1 times [2023-04-02 06:46:31,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:31,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148936242] [2023-04-02 06:46:31,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:31,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:32,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:32,050 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 06:46:32,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:32,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148936242] [2023-04-02 06:46:32,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148936242] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:32,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:32,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:46:32,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188846906] [2023-04-02 06:46:32,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:32,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:46:32,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:32,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:46:32,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:46:32,053 INFO L87 Difference]: Start difference. First operand 386 states and 569 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 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 06:46:32,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:32,701 INFO L93 Difference]: Finished difference Result 990 states and 1519 transitions. [2023-04-02 06:46:32,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:46:32,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 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 107 [2023-04-02 06:46:32,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:32,704 INFO L225 Difference]: With dead ends: 990 [2023-04-02 06:46:32,704 INFO L226 Difference]: Without dead ends: 672 [2023-04-02 06:46:32,705 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 06:46:32,706 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 123 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:32,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 458 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:46:32,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2023-04-02 06:46:32,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 670. [2023-04-02 06:46:32,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 666 states have (on average 1.5165165165165164) internal successors, (1010), 666 states have internal predecessors, (1010), 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 06:46:32,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1013 transitions. [2023-04-02 06:46:32,770 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1013 transitions. Word has length 107 [2023-04-02 06:46:32,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:32,770 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 1013 transitions. [2023-04-02 06:46:32,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 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 06:46:32,771 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1013 transitions. [2023-04-02 06:46:32,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-02 06:46:32,771 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:32,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:46:32,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:46:32,772 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:32,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:32,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1257511975, now seen corresponding path program 1 times [2023-04-02 06:46:32,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:32,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594600517] [2023-04-02 06:46:32,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:32,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:33,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:33,061 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 06:46:33,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:33,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594600517] [2023-04-02 06:46:33,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594600517] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:33,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:33,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:46:33,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164015801] [2023-04-02 06:46:33,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:33,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:46:33,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:33,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:46:33,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:46:33,062 INFO L87 Difference]: Start difference. First operand 670 states and 1013 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 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 06:46:33,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:33,759 INFO L93 Difference]: Finished difference Result 1810 states and 2799 transitions. [2023-04-02 06:46:33,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:46:33,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 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 108 [2023-04-02 06:46:33,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:33,764 INFO L225 Difference]: With dead ends: 1810 [2023-04-02 06:46:33,764 INFO L226 Difference]: Without dead ends: 1208 [2023-04-02 06:46:33,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:46:33,765 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 118 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:33,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 454 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:46:33,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2023-04-02 06:46:33,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1206. [2023-04-02 06:46:33,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1202 states have (on average 1.5324459234608985) internal successors, (1842), 1202 states have internal predecessors, (1842), 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 06:46:33,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1845 transitions. [2023-04-02 06:46:33,821 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1845 transitions. Word has length 108 [2023-04-02 06:46:33,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:33,821 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 1845 transitions. [2023-04-02 06:46:33,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 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 06:46:33,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1845 transitions. [2023-04-02 06:46:33,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-02 06:46:33,822 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:33,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:46:33,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:46:33,822 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:33,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:33,823 INFO L85 PathProgramCache]: Analyzing trace with hash -2127756408, now seen corresponding path program 1 times [2023-04-02 06:46:33,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:33,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174897238] [2023-04-02 06:46:33,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:33,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:34,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:34,078 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 06:46:34,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:34,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174897238] [2023-04-02 06:46:34,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174897238] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:34,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:34,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:46:34,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896110818] [2023-04-02 06:46:34,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:34,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:46:34,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:34,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:46:34,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:46:34,085 INFO L87 Difference]: Start difference. First operand 1206 states and 1845 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 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 06:46:34,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:34,820 INFO L93 Difference]: Finished difference Result 3354 states and 5191 transitions. [2023-04-02 06:46:34,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:46:34,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 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 109 [2023-04-02 06:46:34,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:34,827 INFO L225 Difference]: With dead ends: 3354 [2023-04-02 06:46:34,827 INFO L226 Difference]: Without dead ends: 2216 [2023-04-02 06:46:34,829 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 06:46:34,830 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 113 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:34,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 450 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:46:34,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2216 states. [2023-04-02 06:46:34,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2216 to 2214. [2023-04-02 06:46:34,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2214 states, 2210 states have (on average 1.5357466063348417) internal successors, (3394), 2210 states have internal predecessors, (3394), 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 06:46:34,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2214 states to 2214 states and 3397 transitions. [2023-04-02 06:46:34,931 INFO L78 Accepts]: Start accepts. Automaton has 2214 states and 3397 transitions. Word has length 109 [2023-04-02 06:46:34,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:34,932 INFO L495 AbstractCegarLoop]: Abstraction has 2214 states and 3397 transitions. [2023-04-02 06:46:34,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 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 06:46:34,932 INFO L276 IsEmpty]: Start isEmpty. Operand 2214 states and 3397 transitions. [2023-04-02 06:46:34,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-04-02 06:46:34,933 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:34,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:46:34,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:46:34,933 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:34,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:34,933 INFO L85 PathProgramCache]: Analyzing trace with hash -669752415, now seen corresponding path program 1 times [2023-04-02 06:46:34,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:34,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466074425] [2023-04-02 06:46:34,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:34,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:35,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:35,191 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 06:46:35,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:35,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466074425] [2023-04-02 06:46:35,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466074425] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:35,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:35,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:46:35,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828437573] [2023-04-02 06:46:35,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:35,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:46:35,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:35,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:46:35,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:46:35,192 INFO L87 Difference]: Start difference. First operand 2214 states and 3397 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 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 06:46:35,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:35,933 INFO L93 Difference]: Finished difference Result 6250 states and 9639 transitions. [2023-04-02 06:46:35,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:46:35,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 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 110 [2023-04-02 06:46:35,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:35,943 INFO L225 Difference]: With dead ends: 6250 [2023-04-02 06:46:35,943 INFO L226 Difference]: Without dead ends: 4104 [2023-04-02 06:46:35,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:46:35,946 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 108 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:35,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 446 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:46:35,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4104 states. [2023-04-02 06:46:36,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4104 to 4102. [2023-04-02 06:46:36,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4102 states, 4098 states have (on average 1.5309907271839922) internal successors, (6274), 4098 states have internal predecessors, (6274), 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 06:46:36,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4102 states to 4102 states and 6277 transitions. [2023-04-02 06:46:36,161 INFO L78 Accepts]: Start accepts. Automaton has 4102 states and 6277 transitions. Word has length 110 [2023-04-02 06:46:36,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:36,161 INFO L495 AbstractCegarLoop]: Abstraction has 4102 states and 6277 transitions. [2023-04-02 06:46:36,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 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 06:46:36,161 INFO L276 IsEmpty]: Start isEmpty. Operand 4102 states and 6277 transitions. [2023-04-02 06:46:36,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-04-02 06:46:36,162 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:36,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:46:36,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:46:36,162 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:36,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:36,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1666426556, now seen corresponding path program 1 times [2023-04-02 06:46:36,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:36,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139302413] [2023-04-02 06:46:36,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:36,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:36,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:36,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:46:36,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:36,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139302413] [2023-04-02 06:46:36,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139302413] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:36,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:36,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:46:36,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108751256] [2023-04-02 06:46:36,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:36,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:46:36,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:36,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:46:36,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:46:36,452 INFO L87 Difference]: Start difference. First operand 4102 states and 6277 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:37,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:37,424 INFO L93 Difference]: Finished difference Result 11658 states and 17863 transitions. [2023-04-02 06:46:37,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:46:37,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2023-04-02 06:46:37,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:37,445 INFO L225 Difference]: With dead ends: 11658 [2023-04-02 06:46:37,446 INFO L226 Difference]: Without dead ends: 7624 [2023-04-02 06:46:37,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:46:37,451 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 103 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:37,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 442 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:46:37,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7624 states. [2023-04-02 06:46:37,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7624 to 7622. [2023-04-02 06:46:37,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7622 states, 7618 states have (on average 1.520871619847729) internal successors, (11586), 7618 states have internal predecessors, (11586), 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 06:46:37,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7622 states to 7622 states and 11589 transitions. [2023-04-02 06:46:37,859 INFO L78 Accepts]: Start accepts. Automaton has 7622 states and 11589 transitions. Word has length 111 [2023-04-02 06:46:37,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:37,859 INFO L495 AbstractCegarLoop]: Abstraction has 7622 states and 11589 transitions. [2023-04-02 06:46:37,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:37,860 INFO L276 IsEmpty]: Start isEmpty. Operand 7622 states and 11589 transitions. [2023-04-02 06:46:37,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-02 06:46:37,860 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:37,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:46:37,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:46:37,860 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:37,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:37,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1859837837, now seen corresponding path program 1 times [2023-04-02 06:46:37,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:37,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041896756] [2023-04-02 06:46:37,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:37,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:38,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:38,122 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 06:46:38,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:38,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041896756] [2023-04-02 06:46:38,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041896756] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:38,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:38,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:46:38,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157159045] [2023-04-02 06:46:38,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:38,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:46:38,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:38,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:46:38,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:46:38,124 INFO L87 Difference]: Start difference. First operand 7622 states and 11589 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 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 06:46:39,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:39,539 INFO L93 Difference]: Finished difference Result 21706 states and 32967 transitions. [2023-04-02 06:46:39,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:46:39,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 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 112 [2023-04-02 06:46:39,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:39,627 INFO L225 Difference]: With dead ends: 21706 [2023-04-02 06:46:39,627 INFO L226 Difference]: Without dead ends: 14152 [2023-04-02 06:46:39,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:46:39,673 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 98 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:39,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 438 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:46:39,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14152 states. [2023-04-02 06:46:40,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14152 to 14150. [2023-04-02 06:46:40,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14150 states, 14146 states have (on average 1.5067156793439842) internal successors, (21314), 14146 states have internal predecessors, (21314), 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 06:46:40,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14150 states to 14150 states and 21317 transitions. [2023-04-02 06:46:40,565 INFO L78 Accepts]: Start accepts. Automaton has 14150 states and 21317 transitions. Word has length 112 [2023-04-02 06:46:40,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:40,566 INFO L495 AbstractCegarLoop]: Abstraction has 14150 states and 21317 transitions. [2023-04-02 06:46:40,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 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 06:46:40,566 INFO L276 IsEmpty]: Start isEmpty. Operand 14150 states and 21317 transitions. [2023-04-02 06:46:40,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-02 06:46:40,566 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:40,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:46:40,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:46:40,567 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:40,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:40,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1978723544, now seen corresponding path program 1 times [2023-04-02 06:46:40,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:40,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509438712] [2023-04-02 06:46:40,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:40,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:40,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:40,955 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 06:46:40,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:40,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509438712] [2023-04-02 06:46:40,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509438712] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:40,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:40,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 06:46:40,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039021642] [2023-04-02 06:46:40,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:40,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:46:40,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:40,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:46:40,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:46:40,958 INFO L87 Difference]: Start difference. First operand 14150 states and 21317 transitions. Second operand has 11 states, 11 states have (on average 10.0) internal successors, (110), 10 states have internal predecessors, (110), 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 06:46:59,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:59,700 INFO L93 Difference]: Finished difference Result 239462 states and 361301 transitions. [2023-04-02 06:46:59,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-02 06:46:59,701 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.0) internal successors, (110), 10 states have internal predecessors, (110), 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 113 [2023-04-02 06:46:59,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:47:00,260 INFO L225 Difference]: With dead ends: 239462 [2023-04-02 06:47:00,260 INFO L226 Difference]: Without dead ends: 225380 [2023-04-02 06:47:00,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2023-04-02 06:47:00,587 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 2763 mSDsluCounter, 5111 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2763 SdHoareTripleChecker+Valid, 5313 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:47:00,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2763 Valid, 5313 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:47:00,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225380 states. [2023-04-02 06:47:06,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225380 to 28230. [2023-04-02 06:47:06,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28230 states, 28226 states have (on average 1.4988308651597817) internal successors, (42306), 28226 states have internal predecessors, (42306), 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 06:47:06,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28230 states to 28230 states and 42309 transitions. [2023-04-02 06:47:06,348 INFO L78 Accepts]: Start accepts. Automaton has 28230 states and 42309 transitions. Word has length 113 [2023-04-02 06:47:06,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:47:06,348 INFO L495 AbstractCegarLoop]: Abstraction has 28230 states and 42309 transitions. [2023-04-02 06:47:06,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.0) internal successors, (110), 10 states have internal predecessors, (110), 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 06:47:06,349 INFO L276 IsEmpty]: Start isEmpty. Operand 28230 states and 42309 transitions. [2023-04-02 06:47:06,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-02 06:47:06,349 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:47:06,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:47:06,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:47:06,350 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:47:06,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:47:06,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1990324654, now seen corresponding path program 1 times [2023-04-02 06:47:06,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:47:06,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72694415] [2023-04-02 06:47:06,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:47:06,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:47:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:06,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:47:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:06,884 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 06:47:06,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:47:06,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72694415] [2023-04-02 06:47:06,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72694415] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:47:06,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:47:06,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 06:47:06,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329772379] [2023-04-02 06:47:06,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:47:06,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:47:06,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:47:06,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:47:06,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:47:06,886 INFO L87 Difference]: Start difference. First operand 28230 states and 42309 transitions. Second operand has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 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 06:47:11,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:47:11,674 INFO L93 Difference]: Finished difference Result 56394 states and 84551 transitions. [2023-04-02 06:47:11,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 06:47:11,675 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 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 115 [2023-04-02 06:47:11,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:47:11,727 INFO L225 Difference]: With dead ends: 56394 [2023-04-02 06:47:11,727 INFO L226 Difference]: Without dead ends: 28232 [2023-04-02 06:47:11,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-04-02 06:47:11,760 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 614 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:47:11,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 1181 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:47:11,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28232 states. [2023-04-02 06:47:15,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28232 to 28230. [2023-04-02 06:47:15,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28230 states, 28226 states have (on average 1.4897612130659676) internal successors, (42050), 28226 states have internal predecessors, (42050), 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 06:47:16,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28230 states to 28230 states and 42053 transitions. [2023-04-02 06:47:16,030 INFO L78 Accepts]: Start accepts. Automaton has 28230 states and 42053 transitions. Word has length 115 [2023-04-02 06:47:16,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:47:16,030 INFO L495 AbstractCegarLoop]: Abstraction has 28230 states and 42053 transitions. [2023-04-02 06:47:16,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 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 06:47:16,030 INFO L276 IsEmpty]: Start isEmpty. Operand 28230 states and 42053 transitions. [2023-04-02 06:47:16,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-02 06:47:16,031 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:47:16,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:47:16,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:47:16,031 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:47:16,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:47:16,031 INFO L85 PathProgramCache]: Analyzing trace with hash -2010373997, now seen corresponding path program 1 times [2023-04-02 06:47:16,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:47:16,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969401599] [2023-04-02 06:47:16,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:47:16,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:47:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:16,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:47:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:16,284 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 06:47:16,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:47:16,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969401599] [2023-04-02 06:47:16,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969401599] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:47:16,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:47:16,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:47:16,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285918183] [2023-04-02 06:47:16,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:47:16,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:47:16,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:47:16,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:47:16,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:47:16,286 INFO L87 Difference]: Start difference. First operand 28230 states and 42053 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 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 06:47:22,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:47:22,897 INFO L93 Difference]: Finished difference Result 70348 states and 104905 transitions. [2023-04-02 06:47:22,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:47:22,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 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 115 [2023-04-02 06:47:22,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:47:22,966 INFO L225 Difference]: With dead ends: 70348 [2023-04-02 06:47:22,966 INFO L226 Difference]: Without dead ends: 42186 [2023-04-02 06:47:22,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:47:22,996 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 92 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:47:22,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 399 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:47:23,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42186 states. [2023-04-02 06:47:29,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42186 to 42184. [2023-04-02 06:47:29,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42184 states, 42180 states have (on average 1.485538169748696) internal successors, (62660), 42180 states have internal predecessors, (62660), 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 06:47:29,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42184 states to 42184 states and 62663 transitions. [2023-04-02 06:47:29,356 INFO L78 Accepts]: Start accepts. Automaton has 42184 states and 62663 transitions. Word has length 115 [2023-04-02 06:47:29,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:47:29,356 INFO L495 AbstractCegarLoop]: Abstraction has 42184 states and 62663 transitions. [2023-04-02 06:47:29,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 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 06:47:29,357 INFO L276 IsEmpty]: Start isEmpty. Operand 42184 states and 62663 transitions. [2023-04-02 06:47:29,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-02 06:47:29,357 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:47:29,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:47:29,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:47:29,357 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:47:29,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:47:29,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1572431356, now seen corresponding path program 1 times [2023-04-02 06:47:29,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:47:29,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896378726] [2023-04-02 06:47:29,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:47:29,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:47:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:29,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:47:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:29,633 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 06:47:29,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:47:29,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896378726] [2023-04-02 06:47:29,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896378726] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:47:29,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:47:29,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:47:29,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280417580] [2023-04-02 06:47:29,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:47:29,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:47:29,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:47:29,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:47:29,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:47:29,634 INFO L87 Difference]: Start difference. First operand 42184 states and 62663 transitions. Second operand has 6 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 06:47:41,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:47:41,334 INFO L93 Difference]: Finished difference Result 112460 states and 167241 transitions. [2023-04-02 06:47:41,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:47:41,334 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 116 [2023-04-02 06:47:41,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:47:41,456 INFO L225 Difference]: With dead ends: 112460 [2023-04-02 06:47:41,457 INFO L226 Difference]: Without dead ends: 70346 [2023-04-02 06:47:41,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:47:41,494 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 815 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:47:41,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 207 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:47:41,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70346 states. [2023-04-02 06:47:52,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70346 to 70344. [2023-04-02 06:47:52,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70344 states, 70340 states have (on average 1.4804094398635201) internal successors, (104132), 70340 states have internal predecessors, (104132), 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 06:47:53,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70344 states to 70344 states and 104135 transitions. [2023-04-02 06:47:53,128 INFO L78 Accepts]: Start accepts. Automaton has 70344 states and 104135 transitions. Word has length 116 [2023-04-02 06:47:53,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:47:53,128 INFO L495 AbstractCegarLoop]: Abstraction has 70344 states and 104135 transitions. [2023-04-02 06:47:53,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 06:47:53,128 INFO L276 IsEmpty]: Start isEmpty. Operand 70344 states and 104135 transitions. [2023-04-02 06:47:53,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-02 06:47:53,129 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:47:53,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:47:53,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:47:53,129 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:47:53,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:47:53,130 INFO L85 PathProgramCache]: Analyzing trace with hash 173995305, now seen corresponding path program 1 times [2023-04-02 06:47:53,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:47:53,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538814480] [2023-04-02 06:47:53,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:47:53,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:47:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:53,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:47:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:53,450 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 06:47:53,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:47:53,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538814480] [2023-04-02 06:47:53,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538814480] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:47:53,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:47:53,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:47:53,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115961190] [2023-04-02 06:47:53,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:47:53,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:47:53,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:47:53,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:47:53,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:47:53,452 INFO L87 Difference]: Start difference. First operand 70344 states and 104135 transitions. Second operand has 6 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 06:48:05,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:48:05,587 INFO L93 Difference]: Finished difference Result 140618 states and 208200 transitions. [2023-04-02 06:48:05,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:48:05,588 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 116 [2023-04-02 06:48:05,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:48:05,709 INFO L225 Difference]: With dead ends: 140618 [2023-04-02 06:48:05,709 INFO L226 Difference]: Without dead ends: 70344 [2023-04-02 06:48:05,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:48:05,771 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 445 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:48:05,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 192 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:48:05,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70344 states. [2023-04-02 06:48:17,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70344 to 70344. [2023-04-02 06:48:17,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70344 states, 70340 states have (on average 1.4713107762297413) internal successors, (103492), 70340 states have internal predecessors, (103492), 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 06:48:17,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70344 states to 70344 states and 103495 transitions. [2023-04-02 06:48:17,773 INFO L78 Accepts]: Start accepts. Automaton has 70344 states and 103495 transitions. Word has length 116 [2023-04-02 06:48:17,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:48:17,774 INFO L495 AbstractCegarLoop]: Abstraction has 70344 states and 103495 transitions. [2023-04-02 06:48:17,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 06:48:17,774 INFO L276 IsEmpty]: Start isEmpty. Operand 70344 states and 103495 transitions. [2023-04-02 06:48:17,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-02 06:48:17,774 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:48:17,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:48:17,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:48:17,775 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:48:17,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:48:17,775 INFO L85 PathProgramCache]: Analyzing trace with hash -355295196, now seen corresponding path program 1 times [2023-04-02 06:48:17,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:48:17,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630608921] [2023-04-02 06:48:17,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:48:17,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:48:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:48:18,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:48:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:48:18,094 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 06:48:18,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:48:18,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630608921] [2023-04-02 06:48:18,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630608921] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:48:18,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:48:18,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:48:18,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056022910] [2023-04-02 06:48:18,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:48:18,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:48:18,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:48:18,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:48:18,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:48:18,096 INFO L87 Difference]: Start difference. First operand 70344 states and 103495 transitions. Second operand has 6 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 06:48:31,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:48:31,034 INFO L93 Difference]: Finished difference Result 140618 states and 206920 transitions. [2023-04-02 06:48:31,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:48:31,035 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 116 [2023-04-02 06:48:31,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:48:31,157 INFO L225 Difference]: With dead ends: 140618 [2023-04-02 06:48:31,157 INFO L226 Difference]: Without dead ends: 70344 [2023-04-02 06:48:31,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:48:31,213 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 468 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:48:31,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 176 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:48:31,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70344 states. [2023-04-02 06:48:44,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70344 to 70344. [2023-04-02 06:48:44,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70344 states, 70340 states have (on average 1.4622121125959624) internal successors, (102852), 70340 states have internal predecessors, (102852), 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 06:48:44,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70344 states to 70344 states and 102855 transitions. [2023-04-02 06:48:44,352 INFO L78 Accepts]: Start accepts. Automaton has 70344 states and 102855 transitions. Word has length 116 [2023-04-02 06:48:44,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:48:44,352 INFO L495 AbstractCegarLoop]: Abstraction has 70344 states and 102855 transitions. [2023-04-02 06:48:44,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 06:48:44,352 INFO L276 IsEmpty]: Start isEmpty. Operand 70344 states and 102855 transitions. [2023-04-02 06:48:44,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-02 06:48:44,353 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:48:44,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:48:44,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:48:44,353 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:48:44,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:48:44,353 INFO L85 PathProgramCache]: Analyzing trace with hash -227209889, now seen corresponding path program 1 times [2023-04-02 06:48:44,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:48:44,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580358838] [2023-04-02 06:48:44,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:48:44,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:48:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:48:44,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:48:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:48:44,726 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 06:48:44,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:48:44,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580358838] [2023-04-02 06:48:44,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580358838] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:48:44,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:48:44,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:48:44,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196971735] [2023-04-02 06:48:44,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:48:44,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:48:44,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:48:44,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:48:44,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:48:44,728 INFO L87 Difference]: Start difference. First operand 70344 states and 102855 transitions. Second operand has 6 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 06:48:58,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:48:58,116 INFO L93 Difference]: Finished difference Result 140618 states and 205640 transitions. [2023-04-02 06:48:58,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:48:58,116 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 116 [2023-04-02 06:48:58,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:48:58,238 INFO L225 Difference]: With dead ends: 140618 [2023-04-02 06:48:58,238 INFO L226 Difference]: Without dead ends: 70344 [2023-04-02 06:48:58,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:48:58,299 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 517 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:48:58,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 144 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:48:58,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70344 states. [2023-04-02 06:49:11,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70344 to 70344. [2023-04-02 06:49:11,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70344 states, 70340 states have (on average 1.4531134489621838) internal successors, (102212), 70340 states have internal predecessors, (102212), 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 06:49:11,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70344 states to 70344 states and 102215 transitions. [2023-04-02 06:49:11,343 INFO L78 Accepts]: Start accepts. Automaton has 70344 states and 102215 transitions. Word has length 116 [2023-04-02 06:49:11,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:49:11,344 INFO L495 AbstractCegarLoop]: Abstraction has 70344 states and 102215 transitions. [2023-04-02 06:49:11,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 06:49:11,344 INFO L276 IsEmpty]: Start isEmpty. Operand 70344 states and 102215 transitions. [2023-04-02 06:49:11,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-02 06:49:11,348 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:49:11,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:49:11,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:49:11,368 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:49:11,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:49:11,368 INFO L85 PathProgramCache]: Analyzing trace with hash -589328614, now seen corresponding path program 1 times [2023-04-02 06:49:11,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:49:11,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793448756] [2023-04-02 06:49:11,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:49:11,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:49:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:49:11,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:49:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:49:11,666 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 06:49:11,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:49:11,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793448756] [2023-04-02 06:49:11,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793448756] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:49:11,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:49:11,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:49:11,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753816278] [2023-04-02 06:49:11,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:49:11,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:49:11,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:49:11,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:49:11,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:49:11,669 INFO L87 Difference]: Start difference. First operand 70344 states and 102215 transitions. Second operand has 6 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 06:49:25,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:49:25,478 INFO L93 Difference]: Finished difference Result 140618 states and 204360 transitions. [2023-04-02 06:49:25,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:49:25,479 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 116 [2023-04-02 06:49:25,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:49:25,606 INFO L225 Difference]: With dead ends: 140618 [2023-04-02 06:49:25,607 INFO L226 Difference]: Without dead ends: 70344 [2023-04-02 06:49:25,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:49:25,670 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 501 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:49:25,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 152 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:49:25,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70344 states. [2023-04-02 06:49:39,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70344 to 70344. [2023-04-02 06:49:39,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70344 states, 70340 states have (on average 1.4440147853284049) internal successors, (101572), 70340 states have internal predecessors, (101572), 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 06:49:39,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70344 states to 70344 states and 101575 transitions. [2023-04-02 06:49:39,417 INFO L78 Accepts]: Start accepts. Automaton has 70344 states and 101575 transitions. Word has length 116 [2023-04-02 06:49:39,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:49:39,418 INFO L495 AbstractCegarLoop]: Abstraction has 70344 states and 101575 transitions. [2023-04-02 06:49:39,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 06:49:39,418 INFO L276 IsEmpty]: Start isEmpty. Operand 70344 states and 101575 transitions. [2023-04-02 06:49:39,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-02 06:49:39,418 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:49:39,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:49:39,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:49:39,419 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:49:39,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:49:39,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1964221567, now seen corresponding path program 1 times [2023-04-02 06:49:39,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:49:39,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782231817] [2023-04-02 06:49:39,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:49:39,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:49:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:49:39,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:49:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:49:39,696 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 06:49:39,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:49:39,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782231817] [2023-04-02 06:49:39,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782231817] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:49:39,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:49:39,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:49:39,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887017895] [2023-04-02 06:49:39,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:49:39,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:49:39,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:49:39,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:49:39,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:49:39,698 INFO L87 Difference]: Start difference. First operand 70344 states and 101575 transitions. Second operand has 6 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 06:49:53,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:49:53,878 INFO L93 Difference]: Finished difference Result 140618 states and 203080 transitions. [2023-04-02 06:49:53,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:49:53,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 116 [2023-04-02 06:49:53,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:49:53,998 INFO L225 Difference]: With dead ends: 140618 [2023-04-02 06:49:53,998 INFO L226 Difference]: Without dead ends: 70344 [2023-04-02 06:49:54,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:49:54,056 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 485 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:49:54,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 160 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:49:54,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70344 states. [2023-04-02 06:50:08,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70344 to 70344. [2023-04-02 06:50:08,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70344 states, 70340 states have (on average 1.434916121694626) internal successors, (100932), 70340 states have internal predecessors, (100932), 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 06:50:08,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70344 states to 70344 states and 100935 transitions. [2023-04-02 06:50:08,447 INFO L78 Accepts]: Start accepts. Automaton has 70344 states and 100935 transitions. Word has length 116 [2023-04-02 06:50:08,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:50:08,448 INFO L495 AbstractCegarLoop]: Abstraction has 70344 states and 100935 transitions. [2023-04-02 06:50:08,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 06:50:08,448 INFO L276 IsEmpty]: Start isEmpty. Operand 70344 states and 100935 transitions. [2023-04-02 06:50:08,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-02 06:50:08,454 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:50:08,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:50:08,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 06:50:08,455 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:50:08,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:50:08,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1962474502, now seen corresponding path program 1 times [2023-04-02 06:50:08,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:50:08,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922624046] [2023-04-02 06:50:08,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:50:08,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:50:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:50:08,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:50:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:50:08,900 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 06:50:08,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:50:08,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922624046] [2023-04-02 06:50:08,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922624046] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:50:08,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:50:08,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:50:08,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126578401] [2023-04-02 06:50:08,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:50:08,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:50:08,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:50:08,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:50:08,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:50:08,901 INFO L87 Difference]: Start difference. First operand 70344 states and 100935 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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 06:50:29,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:50:29,791 INFO L93 Difference]: Finished difference Result 105474 states and 150979 transitions. [2023-04-02 06:50:29,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:50:29,792 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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 116 [2023-04-02 06:50:29,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:50:30,006 INFO L225 Difference]: With dead ends: 105474 [2023-04-02 06:50:30,006 INFO L226 Difference]: Without dead ends: 105472 [2023-04-02 06:50:30,038 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 06:50:30,039 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 257 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:50:30,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 920 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:50:30,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105472 states.