/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_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 02:03:48,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 02:03:48,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 02:03:48,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 02:03:48,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 02:03:48,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 02:03:48,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 02:03:48,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 02:03:48,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 02:03:48,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 02:03:48,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 02:03:48,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 02:03:48,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 02:03:48,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 02:03:48,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 02:03:48,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 02:03:48,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 02:03:48,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 02:03:48,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 02:03:48,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 02:03:48,778 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 02:03:48,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 02:03:48,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 02:03:48,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 02:03:48,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 02:03:48,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 02:03:48,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 02:03:48,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 02:03:48,799 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 02:03:48,829 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 02:03:48,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 02:03:48,830 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 02:03:48,830 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 02:03:48,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 02:03:48,832 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 02:03:48,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 02:03:48,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 02:03:48,832 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 02:03:48,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 02:03:48,833 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 02:03:48,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 02:03:48,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 02:03:48,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 02:03:48,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 02:03:48,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 02:03:48,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 02:03:48,834 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 02:03:48,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 02:03:48,834 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 02:03:48,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 02:03:48,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 02:03:48,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 02:03:48,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 02:03:48,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 02:03:48,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 02:03:48,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 02:03:48,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 02:03:48,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 02:03:48,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 02:03:48,836 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 02:03:48,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 02:03:48,836 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 02:03:48,836 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 02:03:48,836 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 02:03:48,836 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 02:03:49,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 02:03:49,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 02:03:49,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 02:03:49,111 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 02:03:49,111 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 02:03:49,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-03-31 02:03:50,308 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 02:03:50,653 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 02:03:50,654 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-03-31 02:03:50,676 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff0b045d9/9fb94d0d976b40bf8664b132a49c4ea8/FLAGa04897e6e [2023-03-31 02:03:50,891 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff0b045d9/9fb94d0d976b40bf8664b132a49c4ea8 [2023-03-31 02:03:50,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 02:03:50,895 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 02:03:50,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 02:03:50,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 02:03:50,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 02:03:50,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 02:03:50" (1/1) ... [2023-03-31 02:03:50,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30051444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:03:50, skipping insertion in model container [2023-03-31 02:03:50,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 02:03:50" (1/1) ... [2023-03-31 02:03:50,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 02:03:50,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 02:03:51,318 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_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[23233,23246] [2023-03-31 02:03:51,458 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 02:03:51,476 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 02:03:51,661 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_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[23233,23246] [2023-03-31 02:03:51,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 02:03:51,803 INFO L208 MainTranslator]: Completed translation [2023-03-31 02:03:51,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:03:51 WrapperNode [2023-03-31 02:03:51,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 02:03:51,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 02:03:51,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 02:03:51,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 02:03:51,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:03:51" (1/1) ... [2023-03-31 02:03:51,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:03:51" (1/1) ... [2023-03-31 02:03:51,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:03:51" (1/1) ... [2023-03-31 02:03:51,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:03:51" (1/1) ... [2023-03-31 02:03:51,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:03:51" (1/1) ... [2023-03-31 02:03:51,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:03:51" (1/1) ... [2023-03-31 02:03:51,993 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:03:51" (1/1) ... [2023-03-31 02:03:52,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:03:51" (1/1) ... [2023-03-31 02:03:52,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 02:03:52,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 02:03:52,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 02:03:52,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 02:03:52,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:03:51" (1/1) ... [2023-03-31 02:03:52,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 02:03:52,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 02:03:52,059 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 02:03:52,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 02:03:52,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 02:03:52,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 02:03:52,097 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 02:03:52,097 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 02:03:52,097 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 02:03:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 02:03:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 02:03:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 02:03:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 02:03:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 02:03:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 02:03:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 02:03:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 02:03:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 02:03:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 02:03:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 02:03:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 02:03:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 02:03:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-03-31 02:03:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-03-31 02:03:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 02:03:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 02:03:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 02:03:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 02:03:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 02:03:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 02:03:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 02:03:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 02:03:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 02:03:52,318 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 02:03:52,320 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 02:03:54,078 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 02:03:54,090 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 02:03:54,090 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 02:03:54,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 02:03:54 BoogieIcfgContainer [2023-03-31 02:03:54,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 02:03:54,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 02:03:54,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 02:03:54,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 02:03:54,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 02:03:50" (1/3) ... [2023-03-31 02:03:54,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54acbd49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 02:03:54, skipping insertion in model container [2023-03-31 02:03:54,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:03:51" (2/3) ... [2023-03-31 02:03:54,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54acbd49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 02:03:54, skipping insertion in model container [2023-03-31 02:03:54,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 02:03:54" (3/3) ... [2023-03-31 02:03:54,100 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-03-31 02:03:54,117 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 02:03:54,117 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 02:03:54,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 02:03:54,182 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;@73676de4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 02:03:54,182 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 02:03:54,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 783 states, 769 states have (on average 1.836150845253576) internal successors, (1412), 778 states have internal predecessors, (1412), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 02:03:54,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-03-31 02:03:54,213 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:03:54,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:03:54,214 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:03:54,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:03:54,219 INFO L85 PathProgramCache]: Analyzing trace with hash -833373572, now seen corresponding path program 1 times [2023-03-31 02:03:54,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:03:54,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163417706] [2023-03-31 02:03:54,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:03:54,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:03:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:55,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:03:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:55,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:03:55,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:03:55,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163417706] [2023-03-31 02:03:55,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163417706] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:03:55,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:03:55,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:03:55,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884899727] [2023-03-31 02:03:55,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:03:55,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:03:55,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:03:55,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:03:55,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:03:55,894 INFO L87 Difference]: Start difference. First operand has 783 states, 769 states have (on average 1.836150845253576) internal successors, (1412), 778 states have internal predecessors, (1412), 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 53.5) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:04:00,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:04:00,607 INFO L93 Difference]: Finished difference Result 1229 states and 2146 transitions. [2023-03-31 02:04:00,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:04:00,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 3 states have internal predecessors, (214), 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 217 [2023-03-31 02:04:00,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:04:00,656 INFO L225 Difference]: With dead ends: 1229 [2023-03-31 02:04:00,656 INFO L226 Difference]: Without dead ends: 975 [2023-03-31 02:04:00,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:04:00,672 INFO L413 NwaCegarLoop]: 1415 mSDtfsCounter, 396 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 2714 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-03-31 02:04:00,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 2714 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1440 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-03-31 02:04:00,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2023-03-31 02:04:00,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 973. [2023-03-31 02:04:00,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 969 states have (on average 1.720330237358101) internal successors, (1667), 969 states have internal predecessors, (1667), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:04:00,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1670 transitions. [2023-03-31 02:04:00,804 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1670 transitions. Word has length 217 [2023-03-31 02:04:00,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:04:00,807 INFO L495 AbstractCegarLoop]: Abstraction has 973 states and 1670 transitions. [2023-03-31 02:04:00,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:04:00,808 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1670 transitions. [2023-03-31 02:04:00,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-03-31 02:04:00,816 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:04:00,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:04:00,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 02:04:00,817 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:04:00,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:04:00,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1956702207, now seen corresponding path program 1 times [2023-03-31 02:04:00,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:04:00,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967530032] [2023-03-31 02:04:00,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:04:00,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:04:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:04:01,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:04:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:04:01,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:04:01,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:04:01,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967530032] [2023-03-31 02:04:01,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967530032] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:04:01,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:04:01,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:04:01,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180822379] [2023-03-31 02:04:01,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:04:01,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:04:01,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:04:01,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:04:01,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:04:01,834 INFO L87 Difference]: Start difference. First operand 973 states and 1670 transitions. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:04:05,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:04:05,704 INFO L93 Difference]: Finished difference Result 1791 states and 3022 transitions. [2023-03-31 02:04:05,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:04:05,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 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 221 [2023-03-31 02:04:05,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:04:05,711 INFO L225 Difference]: With dead ends: 1791 [2023-03-31 02:04:05,712 INFO L226 Difference]: Without dead ends: 1370 [2023-03-31 02:04:05,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:04:05,715 INFO L413 NwaCegarLoop]: 1331 mSDtfsCounter, 332 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2607 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-03-31 02:04:05,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 2607 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-03-31 02:04:05,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2023-03-31 02:04:05,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1368. [2023-03-31 02:04:05,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 1364 states have (on average 1.6994134897360704) internal successors, (2318), 1364 states have internal predecessors, (2318), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:04:05,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 2321 transitions. [2023-03-31 02:04:05,765 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 2321 transitions. Word has length 221 [2023-03-31 02:04:05,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:04:05,766 INFO L495 AbstractCegarLoop]: Abstraction has 1368 states and 2321 transitions. [2023-03-31 02:04:05,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:04:05,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 2321 transitions. [2023-03-31 02:04:05,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-03-31 02:04:05,770 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:04:05,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:04:05,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 02:04:05,771 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:04:05,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:04:05,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1752887302, now seen corresponding path program 1 times [2023-03-31 02:04:05,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:04:05,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095327591] [2023-03-31 02:04:05,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:04:05,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:04:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:04:06,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:04:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:04:06,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:04:06,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:04:06,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095327591] [2023-03-31 02:04:06,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095327591] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:04:06,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:04:06,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:04:06,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896963215] [2023-03-31 02:04:06,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:04:06,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:04:06,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:04:06,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:04:06,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:04:06,704 INFO L87 Difference]: Start difference. First operand 1368 states and 2321 transitions. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:04:10,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:04:10,755 INFO L93 Difference]: Finished difference Result 2952 states and 4931 transitions. [2023-03-31 02:04:10,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:04:10,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 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 225 [2023-03-31 02:04:10,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:04:10,767 INFO L225 Difference]: With dead ends: 2952 [2023-03-31 02:04:10,767 INFO L226 Difference]: Without dead ends: 2136 [2023-03-31 02:04:10,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:04:10,776 INFO L413 NwaCegarLoop]: 1331 mSDtfsCounter, 324 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 2608 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-03-31 02:04:10,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 2608 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-03-31 02:04:10,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2023-03-31 02:04:10,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 2134. [2023-03-31 02:04:10,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2134 states, 2130 states have (on average 1.6779342723004695) internal successors, (3574), 2130 states have internal predecessors, (3574), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:04:10,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2134 states to 2134 states and 3577 transitions. [2023-03-31 02:04:10,889 INFO L78 Accepts]: Start accepts. Automaton has 2134 states and 3577 transitions. Word has length 225 [2023-03-31 02:04:10,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:04:10,889 INFO L495 AbstractCegarLoop]: Abstraction has 2134 states and 3577 transitions. [2023-03-31 02:04:10,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:04:10,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2134 states and 3577 transitions. [2023-03-31 02:04:10,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-03-31 02:04:10,894 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:04:10,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:04:10,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 02:04:10,894 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:04:10,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:04:10,895 INFO L85 PathProgramCache]: Analyzing trace with hash 601234827, now seen corresponding path program 1 times [2023-03-31 02:04:10,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:04:10,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279490921] [2023-03-31 02:04:10,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:04:10,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:04:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:04:11,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:04:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:04:11,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:04:11,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:04:11,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279490921] [2023-03-31 02:04:11,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279490921] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:04:11,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:04:11,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:04:11,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284598182] [2023-03-31 02:04:11,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:04:11,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:04:11,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:04:11,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:04:11,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:04:11,786 INFO L87 Difference]: Start difference. First operand 2134 states and 3577 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:04:15,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:04:15,512 INFO L93 Difference]: Finished difference Result 5202 states and 8611 transitions. [2023-03-31 02:04:15,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:04:15,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 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 229 [2023-03-31 02:04:15,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:04:15,527 INFO L225 Difference]: With dead ends: 5202 [2023-03-31 02:04:15,527 INFO L226 Difference]: Without dead ends: 3620 [2023-03-31 02:04:15,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:04:15,532 INFO L413 NwaCegarLoop]: 1331 mSDtfsCounter, 316 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-03-31 02:04:15,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 2609 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-03-31 02:04:15,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3620 states. [2023-03-31 02:04:15,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3620 to 3618. [2023-03-31 02:04:15,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3618 states, 3614 states have (on average 1.6585500830105147) internal successors, (5994), 3614 states have internal predecessors, (5994), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:04:15,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3618 states to 3618 states and 5997 transitions. [2023-03-31 02:04:15,659 INFO L78 Accepts]: Start accepts. Automaton has 3618 states and 5997 transitions. Word has length 229 [2023-03-31 02:04:15,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:04:15,660 INFO L495 AbstractCegarLoop]: Abstraction has 3618 states and 5997 transitions. [2023-03-31 02:04:15,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:04:15,661 INFO L276 IsEmpty]: Start isEmpty. Operand 3618 states and 5997 transitions. [2023-03-31 02:04:15,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-03-31 02:04:15,666 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:04:15,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:04:15,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 02:04:15,667 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:04:15,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:04:15,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1106969712, now seen corresponding path program 1 times [2023-03-31 02:04:15,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:04:15,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327456269] [2023-03-31 02:04:15,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:04:15,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:04:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:04:16,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:04:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:04:16,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:04:16,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:04:16,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327456269] [2023-03-31 02:04:16,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327456269] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:04:16,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:04:16,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:04:16,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534849116] [2023-03-31 02:04:16,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:04:16,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:04:16,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:04:16,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:04:16,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:04:16,602 INFO L87 Difference]: Start difference. First operand 3618 states and 5997 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:04:20,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:04:20,033 INFO L93 Difference]: Finished difference Result 9558 states and 15695 transitions. [2023-03-31 02:04:20,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:04:20,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 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 233 [2023-03-31 02:04:20,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:04:20,060 INFO L225 Difference]: With dead ends: 9558 [2023-03-31 02:04:20,060 INFO L226 Difference]: Without dead ends: 6492 [2023-03-31 02:04:20,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:04:20,070 INFO L413 NwaCegarLoop]: 1331 mSDtfsCounter, 308 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 2610 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-03-31 02:04:20,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 2610 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-03-31 02:04:20,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6492 states. [2023-03-31 02:04:20,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6492 to 6490. [2023-03-31 02:04:20,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6490 states, 6486 states have (on average 1.6419981498612395) internal successors, (10650), 6486 states have internal predecessors, (10650), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:04:20,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6490 states to 6490 states and 10653 transitions. [2023-03-31 02:04:20,280 INFO L78 Accepts]: Start accepts. Automaton has 6490 states and 10653 transitions. Word has length 233 [2023-03-31 02:04:20,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:04:20,281 INFO L495 AbstractCegarLoop]: Abstraction has 6490 states and 10653 transitions. [2023-03-31 02:04:20,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:04:20,281 INFO L276 IsEmpty]: Start isEmpty. Operand 6490 states and 10653 transitions. [2023-03-31 02:04:20,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-03-31 02:04:20,287 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:04:20,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:04:20,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 02:04:20,288 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:04:20,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:04:20,288 INFO L85 PathProgramCache]: Analyzing trace with hash -2021563115, now seen corresponding path program 1 times [2023-03-31 02:04:20,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:04:20,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296442427] [2023-03-31 02:04:20,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:04:20,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:04:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:04:21,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:04:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:04:21,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:04:21,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:04:21,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296442427] [2023-03-31 02:04:21,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296442427] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:04:21,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:04:21,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 02:04:21,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823084459] [2023-03-31 02:04:21,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:04:21,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 02:04:21,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:04:21,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 02:04:21,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-03-31 02:04:21,277 INFO L87 Difference]: Start difference. First operand 6490 states and 10653 transitions. Second operand has 8 states, 8 states have (on average 29.25) internal successors, (234), 7 states have internal predecessors, (234), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:04:26,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:04:26,031 INFO L93 Difference]: Finished difference Result 39910 states and 65495 transitions. [2023-03-31 02:04:26,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 02:04:26,032 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 29.25) internal successors, (234), 7 states have internal predecessors, (234), 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 237 [2023-03-31 02:04:26,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:04:26,145 INFO L225 Difference]: With dead ends: 39910 [2023-03-31 02:04:26,145 INFO L226 Difference]: Without dead ends: 33916 [2023-03-31 02:04:26,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2023-03-31 02:04:26,171 INFO L413 NwaCegarLoop]: 1335 mSDtfsCounter, 3874 mSDsluCounter, 12066 mSDsCounter, 0 mSdLazyCounter, 1557 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3874 SdHoareTripleChecker+Valid, 13401 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-03-31 02:04:26,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3874 Valid, 13401 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1557 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-03-31 02:04:26,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33916 states. [2023-03-31 02:04:27,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33916 to 12089. [2023-03-31 02:04:27,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12089 states, 12085 states have (on average 1.643111294993794) internal successors, (19857), 12085 states have internal predecessors, (19857), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:04:27,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12089 states to 12089 states and 19860 transitions. [2023-03-31 02:04:27,449 INFO L78 Accepts]: Start accepts. Automaton has 12089 states and 19860 transitions. Word has length 237 [2023-03-31 02:04:27,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:04:27,450 INFO L495 AbstractCegarLoop]: Abstraction has 12089 states and 19860 transitions. [2023-03-31 02:04:27,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.25) internal successors, (234), 7 states have internal predecessors, (234), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:04:27,451 INFO L276 IsEmpty]: Start isEmpty. Operand 12089 states and 19860 transitions. [2023-03-31 02:04:27,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-03-31 02:04:27,462 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:04:27,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:04:27,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 02:04:27,462 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:04:27,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:04:27,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1685326888, now seen corresponding path program 1 times [2023-03-31 02:04:27,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:04:27,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059844249] [2023-03-31 02:04:27,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:04:27,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:04:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:04:28,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:04:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:04:28,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:04:28,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:04:28,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059844249] [2023-03-31 02:04:28,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059844249] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:04:28,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:04:28,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 02:04:28,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667158811] [2023-03-31 02:04:28,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:04:28,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 02:04:28,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:04:28,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 02:04:28,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:04:28,256 INFO L87 Difference]: Start difference. First operand 12089 states and 19860 transitions. Second operand has 5 states, 5 states have (on average 47.0) internal successors, (235), 4 states have internal predecessors, (235), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:04:33,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:04:33,134 INFO L93 Difference]: Finished difference Result 35520 states and 58308 transitions. [2023-03-31 02:04:33,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 02:04:33,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 47.0) internal successors, (235), 4 states have internal predecessors, (235), 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 238 [2023-03-31 02:04:33,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:04:33,202 INFO L225 Difference]: With dead ends: 35520 [2023-03-31 02:04:33,202 INFO L226 Difference]: Without dead ends: 23983 [2023-03-31 02:04:33,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-03-31 02:04:33,235 INFO L413 NwaCegarLoop]: 1339 mSDtfsCounter, 1058 mSDsluCounter, 2681 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 4020 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-03-31 02:04:33,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 4020 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-03-31 02:04:33,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23983 states. [2023-03-31 02:04:34,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23983 to 17988. [2023-03-31 02:04:34,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17988 states, 17984 states have (on average 1.6401801601423487) internal successors, (29497), 17984 states have internal predecessors, (29497), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:04:34,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17988 states to 17988 states and 29500 transitions. [2023-03-31 02:04:34,632 INFO L78 Accepts]: Start accepts. Automaton has 17988 states and 29500 transitions. Word has length 238 [2023-03-31 02:04:34,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:04:34,632 INFO L495 AbstractCegarLoop]: Abstraction has 17988 states and 29500 transitions. [2023-03-31 02:04:34,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.0) internal successors, (235), 4 states have internal predecessors, (235), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:04:34,633 INFO L276 IsEmpty]: Start isEmpty. Operand 17988 states and 29500 transitions. [2023-03-31 02:04:34,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-03-31 02:04:34,647 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:04:34,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:04:34,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 02:04:34,648 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:04:34,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:04:34,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1207694305, now seen corresponding path program 1 times [2023-03-31 02:04:34,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:04:34,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576669486] [2023-03-31 02:04:34,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:04:34,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:04:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:04:35,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:04:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:04:35,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:04:35,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:04:35,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576669486] [2023-03-31 02:04:35,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576669486] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:04:35,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:04:35,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:04:35,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129603579] [2023-03-31 02:04:35,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:04:35,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:04:35,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:04:35,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:04:35,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:04:35,471 INFO L87 Difference]: Start difference. First operand 17988 states and 29500 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:04:41,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:04:41,524 INFO L93 Difference]: Finished difference Result 39683 states and 64940 transitions. [2023-03-31 02:04:41,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:04:41,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 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 239 [2023-03-31 02:04:41,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:04:41,592 INFO L225 Difference]: With dead ends: 39683 [2023-03-31 02:04:41,592 INFO L226 Difference]: Without dead ends: 27655 [2023-03-31 02:04:41,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:04:41,618 INFO L413 NwaCegarLoop]: 1622 mSDtfsCounter, 341 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 1628 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 2896 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-03-31 02:04:41,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 2896 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1628 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-03-31 02:04:41,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27655 states.