/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_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:57:25,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:57:25,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:57:25,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-02 05:57:25,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:57:25,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:57:25,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:57:25,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:57:25,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:57:25,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:57:25,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:57:25,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:57:25,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:57:25,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:57:25,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:57:25,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:57:25,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 05:57:25,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:57:25,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:57:25,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:57:25,913 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 05:57:25,943 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:57:25,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:57:25,944 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:57:25,944 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:57:25,945 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:57:25,945 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:57:25,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:57:25,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:57:25,945 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:57:25,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:57:25,946 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:57:25,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:57:25,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:57:25,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:57:25,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:57:25,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:57:25,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:57:25,947 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:57:25,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:57:25,947 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:57:25,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:57:25,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:57:25,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:57:25,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:57:25,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:57:25,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:57:25,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:57:25,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:57:25,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:57:25,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:57:25,948 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:57:25,948 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:57:25,948 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:57:25,949 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:57:25,949 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:57:25,949 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:57:26,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:57:26,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:57:26,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:57:26,200 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:57:26,201 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:57:26,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-02 05:57:27,446 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:57:28,203 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:57:28,204 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-02 05:57:28,220 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe5128d28/fd1c0ed91c8642db969637fe1b537eeb/FLAG840e58815 [2023-04-02 05:57:28,235 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe5128d28/fd1c0ed91c8642db969637fe1b537eeb [2023-04-02 05:57:28,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:57:28,239 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:57:28,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:57:28,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:57:28,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:57:28,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:57:28" (1/1) ... [2023-04-02 05:57:28,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12e74cfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:57:28, skipping insertion in model container [2023-04-02 05:57:28,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:57:28" (1/1) ... [2023-04-02 05:57:28,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:57:28,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:57:29,142 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_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[50013,50026] [2023-04-02 05:57:29,224 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_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[55775,55788] [2023-04-02 05:57:29,442 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:57:29,457 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:57:29,892 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_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[50013,50026] [2023-04-02 05:57:29,961 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_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[55775,55788] [2023-04-02 05:57:30,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:57:30,167 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:57:30,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:57:30 WrapperNode [2023-04-02 05:57:30,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:57:30,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:57:30,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:57:30,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:57:30,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:57:30" (1/1) ... [2023-04-02 05:57:30,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:57:30" (1/1) ... [2023-04-02 05:57:30,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:57:30" (1/1) ... [2023-04-02 05:57:30,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:57:30" (1/1) ... [2023-04-02 05:57:30,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:57:30" (1/1) ... [2023-04-02 05:57:30,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:57:30" (1/1) ... [2023-04-02 05:57:30,322 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:57:30" (1/1) ... [2023-04-02 05:57:30,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:57:30" (1/1) ... [2023-04-02 05:57:30,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:57:30,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:57:30,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:57:30,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:57:30,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:57:30" (1/1) ... [2023-04-02 05:57:30,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:57:30,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:57:30,387 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 05:57:30,406 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 05:57:30,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:57:30,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:57:30,428 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:57:30,428 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 05:57:30,428 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:57:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:57:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:57:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:57:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:57:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:57:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 05:57:30,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:57:30,429 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:57:30,429 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 05:57:30,429 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:57:30,429 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:57:30,429 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:57:30,429 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:57:30,429 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:57:30,429 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 05:57:30,429 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 05:57:30,430 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:57:30,430 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:57:30,430 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:57:30,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:57:30,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:57:30,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:57:30,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:57:30,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:57:30,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:57:30,661 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:57:30,663 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:57:33,545 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:57:33,565 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:57:33,565 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 05:57:33,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:57:33 BoogieIcfgContainer [2023-04-02 05:57:33,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:57:33,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:57:33,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:57:33,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:57:33,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:57:28" (1/3) ... [2023-04-02 05:57:33,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6da2e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:57:33, skipping insertion in model container [2023-04-02 05:57:33,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:57:30" (2/3) ... [2023-04-02 05:57:33,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6da2e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:57:33, skipping insertion in model container [2023-04-02 05:57:33,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:57:33" (3/3) ... [2023-04-02 05:57:33,576 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-02 05:57:33,591 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:57:33,591 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-04-02 05:57:33,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:57:33,658 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;@2289799d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:57:33,658 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-04-02 05:57:33,672 INFO L276 IsEmpty]: Start isEmpty. Operand has 1401 states, 1386 states have (on average 1.8138528138528138) internal successors, (2514), 1396 states have internal predecessors, (2514), 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 05:57:33,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2023-04-02 05:57:33,709 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:57:33,709 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:57:33,710 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:57:33,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:57:33,714 INFO L85 PathProgramCache]: Analyzing trace with hash -66589577, now seen corresponding path program 1 times [2023-04-02 05:57:33,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:57:33,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431100645] [2023-04-02 05:57:33,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:57:33,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:57:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:57:36,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:57:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:57:36,837 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 05:57:36,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:57:36,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431100645] [2023-04-02 05:57:36,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431100645] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:57:36,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:57:36,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:57:36,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302086876] [2023-04-02 05:57:36,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:57:36,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:57:36,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:57:36,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:57:36,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:57:36,891 INFO L87 Difference]: Start difference. First operand has 1401 states, 1386 states have (on average 1.8138528138528138) internal successors, (2514), 1396 states have internal predecessors, (2514), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 94.0) internal successors, (470), 4 states have internal predecessors, (470), 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 05:57:47,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:57:47,845 INFO L93 Difference]: Finished difference Result 4149 states and 7467 transitions. [2023-04-02 05:57:47,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 05:57:47,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 94.0) internal successors, (470), 4 states have internal predecessors, (470), 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 473 [2023-04-02 05:57:47,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:57:47,872 INFO L225 Difference]: With dead ends: 4149 [2023-04-02 05:57:47,872 INFO L226 Difference]: Without dead ends: 2739 [2023-04-02 05:57:47,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:57:47,883 INFO L413 NwaCegarLoop]: 3899 mSDtfsCounter, 5788 mSDsluCounter, 2437 mSDsCounter, 0 mSdLazyCounter, 4029 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5788 SdHoareTripleChecker+Valid, 6336 SdHoareTripleChecker+Invalid, 4072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 4029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:57:47,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5788 Valid, 6336 Invalid, 4072 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [43 Valid, 4029 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2023-04-02 05:57:47,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2023-04-02 05:57:48,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2686. [2023-04-02 05:57:48,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2681 states have (on average 1.6318537859007833) internal successors, (4375), 2682 states have internal predecessors, (4375), 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 05:57:48,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4378 transitions. [2023-04-02 05:57:48,120 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4378 transitions. Word has length 473 [2023-04-02 05:57:48,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:57:48,124 INFO L495 AbstractCegarLoop]: Abstraction has 2686 states and 4378 transitions. [2023-04-02 05:57:48,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.0) internal successors, (470), 4 states have internal predecessors, (470), 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 05:57:48,125 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4378 transitions. [2023-04-02 05:57:48,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2023-04-02 05:57:48,138 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:57:48,138 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:57:48,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:57:48,139 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:57:48,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:57:48,141 INFO L85 PathProgramCache]: Analyzing trace with hash -359431682, now seen corresponding path program 1 times [2023-04-02 05:57:48,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:57:48,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287235555] [2023-04-02 05:57:48,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:57:48,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:57:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:57:49,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:57:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:57:49,332 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 05:57:49,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:57:49,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287235555] [2023-04-02 05:57:49,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287235555] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:57:49,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:57:49,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:57:49,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236015086] [2023-04-02 05:57:49,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:57:49,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:57:49,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:57:49,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:57:49,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:57:49,342 INFO L87 Difference]: Start difference. First operand 2686 states and 4378 transitions. Second operand has 4 states, 4 states have (on average 118.0) internal successors, (472), 3 states have internal predecessors, (472), 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 05:58:00,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:58:00,779 INFO L93 Difference]: Finished difference Result 7787 states and 12653 transitions. [2023-04-02 05:58:00,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:58:00,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.0) internal successors, (472), 3 states have internal predecessors, (472), 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 475 [2023-04-02 05:58:00,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:58:00,805 INFO L225 Difference]: With dead ends: 7787 [2023-04-02 05:58:00,806 INFO L226 Difference]: Without dead ends: 5315 [2023-04-02 05:58:00,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:58:00,813 INFO L413 NwaCegarLoop]: 4366 mSDtfsCounter, 2020 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 4420 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2020 SdHoareTripleChecker+Valid, 6566 SdHoareTripleChecker+Invalid, 4454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:58:00,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2020 Valid, 6566 Invalid, 4454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4420 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2023-04-02 05:58:00,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5315 states. [2023-04-02 05:58:01,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5315 to 5264. [2023-04-02 05:58:01,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5264 states, 5259 states have (on average 1.6263548203080433) internal successors, (8553), 5260 states have internal predecessors, (8553), 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 05:58:01,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5264 states to 5264 states and 8556 transitions. [2023-04-02 05:58:01,100 INFO L78 Accepts]: Start accepts. Automaton has 5264 states and 8556 transitions. Word has length 475 [2023-04-02 05:58:01,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:58:01,101 INFO L495 AbstractCegarLoop]: Abstraction has 5264 states and 8556 transitions. [2023-04-02 05:58:01,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.0) internal successors, (472), 3 states have internal predecessors, (472), 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 05:58:01,101 INFO L276 IsEmpty]: Start isEmpty. Operand 5264 states and 8556 transitions. [2023-04-02 05:58:01,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2023-04-02 05:58:01,118 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:58:01,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:58:01,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:58:01,118 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:58:01,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:58:01,119 INFO L85 PathProgramCache]: Analyzing trace with hash -262688380, now seen corresponding path program 1 times [2023-04-02 05:58:01,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:58:01,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333897431] [2023-04-02 05:58:01,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:58:01,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:58:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:58:02,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:58:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:58:02,117 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 05:58:02,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:58:02,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333897431] [2023-04-02 05:58:02,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333897431] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:58:02,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:58:02,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:58:02,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926557045] [2023-04-02 05:58:02,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:58:02,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:58:02,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:58:02,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:58:02,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:58:02,120 INFO L87 Difference]: Start difference. First operand 5264 states and 8556 transitions. Second operand has 4 states, 4 states have (on average 118.25) internal successors, (473), 3 states have internal predecessors, (473), 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 05:58:12,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:58:12,908 INFO L93 Difference]: Finished difference Result 15695 states and 25500 transitions. [2023-04-02 05:58:12,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:58:12,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.25) internal successors, (473), 3 states have internal predecessors, (473), 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 476 [2023-04-02 05:58:12,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:58:12,958 INFO L225 Difference]: With dead ends: 15695 [2023-04-02 05:58:12,958 INFO L226 Difference]: Without dead ends: 10483 [2023-04-02 05:58:12,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:58:12,968 INFO L413 NwaCegarLoop]: 4488 mSDtfsCounter, 2245 mSDsluCounter, 2250 mSDsCounter, 0 mSdLazyCounter, 4500 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2245 SdHoareTripleChecker+Valid, 6738 SdHoareTripleChecker+Invalid, 4506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:58:12,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2245 Valid, 6738 Invalid, 4506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4500 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2023-04-02 05:58:12,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10483 states. [2023-04-02 05:58:13,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10483 to 5311. [2023-04-02 05:58:13,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5311 states, 5306 states have (on average 1.625895212966453) internal successors, (8627), 5307 states have internal predecessors, (8627), 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 05:58:13,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5311 states to 5311 states and 8630 transitions. [2023-04-02 05:58:13,343 INFO L78 Accepts]: Start accepts. Automaton has 5311 states and 8630 transitions. Word has length 476 [2023-04-02 05:58:13,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:58:13,343 INFO L495 AbstractCegarLoop]: Abstraction has 5311 states and 8630 transitions. [2023-04-02 05:58:13,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.25) internal successors, (473), 3 states have internal predecessors, (473), 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 05:58:13,344 INFO L276 IsEmpty]: Start isEmpty. Operand 5311 states and 8630 transitions. [2023-04-02 05:58:13,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2023-04-02 05:58:13,355 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:58:13,356 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:58:13,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:58:13,356 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:58:13,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:58:13,357 INFO L85 PathProgramCache]: Analyzing trace with hash -2055678045, now seen corresponding path program 1 times [2023-04-02 05:58:13,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:58:13,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469526069] [2023-04-02 05:58:13,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:58:13,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:58:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:58:14,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:58:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:58:14,373 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 05:58:14,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:58:14,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469526069] [2023-04-02 05:58:14,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469526069] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:58:14,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:58:14,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:58:14,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649412870] [2023-04-02 05:58:14,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:58:14,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:58:14,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:58:14,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:58:14,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:58:14,377 INFO L87 Difference]: Start difference. First operand 5311 states and 8630 transitions. Second operand has 4 states, 4 states have (on average 118.5) internal successors, (474), 3 states have internal predecessors, (474), 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 05:58:24,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:58:24,483 INFO L93 Difference]: Finished difference Result 15273 states and 24719 transitions. [2023-04-02 05:58:24,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:58:24,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 3 states have internal predecessors, (474), 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 477 [2023-04-02 05:58:24,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:58:24,515 INFO L225 Difference]: With dead ends: 15273 [2023-04-02 05:58:24,516 INFO L226 Difference]: Without dead ends: 10361 [2023-04-02 05:58:24,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:58:24,526 INFO L413 NwaCegarLoop]: 4450 mSDtfsCounter, 2012 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 4504 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2012 SdHoareTripleChecker+Valid, 6650 SdHoareTripleChecker+Invalid, 4538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:58:24,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2012 Valid, 6650 Invalid, 4538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4504 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2023-04-02 05:58:24,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10361 states. [2023-04-02 05:58:25,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10361 to 10312. [2023-04-02 05:58:25,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10312 states, 10307 states have (on average 1.6172504123411273) internal successors, (16669), 10308 states have internal predecessors, (16669), 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 05:58:25,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10312 states to 10312 states and 16672 transitions. [2023-04-02 05:58:25,314 INFO L78 Accepts]: Start accepts. Automaton has 10312 states and 16672 transitions. Word has length 477 [2023-04-02 05:58:25,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:58:25,314 INFO L495 AbstractCegarLoop]: Abstraction has 10312 states and 16672 transitions. [2023-04-02 05:58:25,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 3 states have internal predecessors, (474), 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 05:58:25,315 INFO L276 IsEmpty]: Start isEmpty. Operand 10312 states and 16672 transitions. [2023-04-02 05:58:25,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2023-04-02 05:58:25,340 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:58:25,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:58:25,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:58:25,341 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:58:25,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:58:25,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1314173246, now seen corresponding path program 1 times [2023-04-02 05:58:25,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:58:25,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083110408] [2023-04-02 05:58:25,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:58:25,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:58:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:58:26,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:58:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:58:26,250 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 05:58:26,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:58:26,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083110408] [2023-04-02 05:58:26,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083110408] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:58:26,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:58:26,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:58:26,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570318736] [2023-04-02 05:58:26,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:58:26,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:58:26,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:58:26,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:58:26,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:58:26,254 INFO L87 Difference]: Start difference. First operand 10312 states and 16672 transitions. Second operand has 4 states, 4 states have (on average 118.5) internal successors, (474), 3 states have internal predecessors, (474), 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 05:58:37,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:58:37,365 INFO L93 Difference]: Finished difference Result 30680 states and 49571 transitions. [2023-04-02 05:58:37,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:58:37,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 3 states have internal predecessors, (474), 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 477 [2023-04-02 05:58:37,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:58:37,418 INFO L225 Difference]: With dead ends: 30680 [2023-04-02 05:58:37,418 INFO L226 Difference]: Without dead ends: 20512 [2023-04-02 05:58:37,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:58:37,439 INFO L413 NwaCegarLoop]: 4492 mSDtfsCounter, 2240 mSDsluCounter, 2250 mSDsCounter, 0 mSdLazyCounter, 4504 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2240 SdHoareTripleChecker+Valid, 6742 SdHoareTripleChecker+Invalid, 4510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:58:37,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2240 Valid, 6742 Invalid, 4510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4504 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2023-04-02 05:58:37,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20512 states. [2023-04-02 05:58:38,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20512 to 10410. [2023-04-02 05:58:38,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10410 states, 10405 states have (on average 1.616530514175877) internal successors, (16820), 10406 states have internal predecessors, (16820), 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 05:58:38,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10410 states to 10410 states and 16823 transitions. [2023-04-02 05:58:38,459 INFO L78 Accepts]: Start accepts. Automaton has 10410 states and 16823 transitions. Word has length 477 [2023-04-02 05:58:38,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:58:38,459 INFO L495 AbstractCegarLoop]: Abstraction has 10410 states and 16823 transitions. [2023-04-02 05:58:38,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 3 states have internal predecessors, (474), 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 05:58:38,460 INFO L276 IsEmpty]: Start isEmpty. Operand 10410 states and 16823 transitions. [2023-04-02 05:58:38,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2023-04-02 05:58:38,512 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:58:38,512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:58:38,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:58:38,513 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:58:38,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:58:38,514 INFO L85 PathProgramCache]: Analyzing trace with hash -2022249869, now seen corresponding path program 1 times [2023-04-02 05:58:38,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:58:38,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476842967] [2023-04-02 05:58:38,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:58:38,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:58:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:58:39,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:58:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:58:39,405 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 05:58:39,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:58:39,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476842967] [2023-04-02 05:58:39,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476842967] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:58:39,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:58:39,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:58:39,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419467771] [2023-04-02 05:58:39,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:58:39,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:58:39,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:58:39,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:58:39,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:58:39,408 INFO L87 Difference]: Start difference. First operand 10410 states and 16823 transitions. Second operand has 4 states, 4 states have (on average 118.75) internal successors, (475), 3 states have internal predecessors, (475), 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 05:58:50,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:58:50,119 INFO L93 Difference]: Finished difference Result 30815 states and 49752 transitions. [2023-04-02 05:58:50,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:58:50,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.75) internal successors, (475), 3 states have internal predecessors, (475), 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 478 [2023-04-02 05:58:50,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:58:50,166 INFO L225 Difference]: With dead ends: 30815 [2023-04-02 05:58:50,166 INFO L226 Difference]: Without dead ends: 20629 [2023-04-02 05:58:50,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:58:50,187 INFO L413 NwaCegarLoop]: 4496 mSDtfsCounter, 2235 mSDsluCounter, 2250 mSDsCounter, 0 mSdLazyCounter, 4508 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2235 SdHoareTripleChecker+Valid, 6746 SdHoareTripleChecker+Invalid, 4514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:58:50,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2235 Valid, 6746 Invalid, 4514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4508 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2023-04-02 05:58:50,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20629 states. [2023-04-02 05:58:51,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20629 to 10527. [2023-04-02 05:58:51,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10527 states, 10522 states have (on average 1.6124310967496673) internal successors, (16966), 10523 states have internal predecessors, (16966), 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 05:58:51,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10527 states to 10527 states and 16969 transitions. [2023-04-02 05:58:51,107 INFO L78 Accepts]: Start accepts. Automaton has 10527 states and 16969 transitions. Word has length 478 [2023-04-02 05:58:51,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:58:51,107 INFO L495 AbstractCegarLoop]: Abstraction has 10527 states and 16969 transitions. [2023-04-02 05:58:51,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.75) internal successors, (475), 3 states have internal predecessors, (475), 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 05:58:51,108 INFO L276 IsEmpty]: Start isEmpty. Operand 10527 states and 16969 transitions. [2023-04-02 05:58:51,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2023-04-02 05:58:51,133 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:58:51,133 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:58:51,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:58:51,134 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:58:51,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:58:51,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1784786648, now seen corresponding path program 1 times [2023-04-02 05:58:51,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:58:51,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633017010] [2023-04-02 05:58:51,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:58:51,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:58:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:58:52,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:58:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:58:52,173 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 05:58:52,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:58:52,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633017010] [2023-04-02 05:58:52,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633017010] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:58:52,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:58:52,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:58:52,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096726731] [2023-04-02 05:58:52,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:58:52,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:58:52,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:58:52,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:58:52,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:58:52,176 INFO L87 Difference]: Start difference. First operand 10527 states and 16969 transitions. Second operand has 4 states, 4 states have (on average 119.0) internal successors, (476), 3 states have internal predecessors, (476), 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 05:59:03,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:59:03,491 INFO L93 Difference]: Finished difference Result 29897 states and 48052 transitions. [2023-04-02 05:59:03,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:59:03,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 119.0) internal successors, (476), 3 states have internal predecessors, (476), 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 479 [2023-04-02 05:59:03,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:59:03,540 INFO L225 Difference]: With dead ends: 29897 [2023-04-02 05:59:03,541 INFO L226 Difference]: Without dead ends: 20339 [2023-04-02 05:59:03,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:59:03,560 INFO L413 NwaCegarLoop]: 4450 mSDtfsCounter, 2005 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 4504 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2005 SdHoareTripleChecker+Valid, 6650 SdHoareTripleChecker+Invalid, 4538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:59:03,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2005 Valid, 6650 Invalid, 4538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4504 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2023-04-02 05:59:03,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20339 states. [2023-04-02 05:59:05,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20339 to 20292. [2023-04-02 05:59:05,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20292 states, 20287 states have (on average 1.6045250653127618) internal successors, (32551), 20288 states have internal predecessors, (32551), 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 05:59:05,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20292 states to 20292 states and 32554 transitions. [2023-04-02 05:59:05,425 INFO L78 Accepts]: Start accepts. Automaton has 20292 states and 32554 transitions. Word has length 479 [2023-04-02 05:59:05,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:59:05,426 INFO L495 AbstractCegarLoop]: Abstraction has 20292 states and 32554 transitions. [2023-04-02 05:59:05,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.0) internal successors, (476), 3 states have internal predecessors, (476), 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 05:59:05,426 INFO L276 IsEmpty]: Start isEmpty. Operand 20292 states and 32554 transitions. [2023-04-02 05:59:05,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2023-04-02 05:59:05,465 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:59:05,465 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:05,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 05:59:05,466 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:59:05,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:59:05,466 INFO L85 PathProgramCache]: Analyzing trace with hash 881610347, now seen corresponding path program 1 times [2023-04-02 05:59:05,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:59:05,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859568471] [2023-04-02 05:59:05,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:59:05,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:59:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:07,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:59:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:07,218 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 05:59:07,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:59:07,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859568471] [2023-04-02 05:59:07,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859568471] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:59:07,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:59:07,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 05:59:07,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115002892] [2023-04-02 05:59:07,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:59:07,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:59:07,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:59:07,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:59:07,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:59:07,221 INFO L87 Difference]: Start difference. First operand 20292 states and 32554 transitions. Second operand has 6 states, 6 states have (on average 79.33333333333333) internal successors, (476), 5 states have internal predecessors, (476), 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 05:59:18,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:59:18,290 INFO L93 Difference]: Finished difference Result 59443 states and 95336 transitions. [2023-04-02 05:59:18,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:59:18,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 79.33333333333333) internal successors, (476), 5 states have internal predecessors, (476), 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 479 [2023-04-02 05:59:18,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:59:18,360 INFO L225 Difference]: With dead ends: 59443 [2023-04-02 05:59:18,360 INFO L226 Difference]: Without dead ends: 39369 [2023-04-02 05:59:18,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:59:18,406 INFO L413 NwaCegarLoop]: 3474 mSDtfsCounter, 5399 mSDsluCounter, 4370 mSDsCounter, 0 mSdLazyCounter, 3628 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5399 SdHoareTripleChecker+Valid, 7844 SdHoareTripleChecker+Invalid, 3668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:59:18,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5399 Valid, 7844 Invalid, 3668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3628 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-04-02 05:59:18,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39369 states. [2023-04-02 05:59:21,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39369 to 39327. [2023-04-02 05:59:21,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39327 states, 39322 states have (on average 1.596383703779055) internal successors, (62773), 39323 states have internal predecessors, (62773), 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 05:59:22,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39327 states to 39327 states and 62776 transitions. [2023-04-02 05:59:22,066 INFO L78 Accepts]: Start accepts. Automaton has 39327 states and 62776 transitions. Word has length 479 [2023-04-02 05:59:22,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:59:22,066 INFO L495 AbstractCegarLoop]: Abstraction has 39327 states and 62776 transitions. [2023-04-02 05:59:22,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.33333333333333) internal successors, (476), 5 states have internal predecessors, (476), 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 05:59:22,066 INFO L276 IsEmpty]: Start isEmpty. Operand 39327 states and 62776 transitions. [2023-04-02 05:59:22,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2023-04-02 05:59:22,121 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:59:22,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:22,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 05:59:22,122 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:59:22,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:59:22,122 INFO L85 PathProgramCache]: Analyzing trace with hash -634427698, now seen corresponding path program 1 times [2023-04-02 05:59:22,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:59:22,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573583942] [2023-04-02 05:59:22,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:59:22,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:59:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:23,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:59:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:23,059 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 05:59:23,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:59:23,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573583942] [2023-04-02 05:59:23,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573583942] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:59:23,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:59:23,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:59:23,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967238772] [2023-04-02 05:59:23,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:59:23,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:59:23,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:59:23,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:59:23,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:59:23,062 INFO L87 Difference]: Start difference. First operand 39327 states and 62776 transitions. Second operand has 4 states, 4 states have (on average 119.5) internal successors, (478), 3 states have internal predecessors, (478), 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 05:59:40,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:59:40,150 INFO L93 Difference]: Finished difference Result 115310 states and 183881 transitions. [2023-04-02 05:59:40,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:59:40,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 119.5) internal successors, (478), 3 states have internal predecessors, (478), 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 481 [2023-04-02 05:59:40,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:59:40,333 INFO L225 Difference]: With dead ends: 115310 [2023-04-02 05:59:40,333 INFO L226 Difference]: Without dead ends: 77525 [2023-04-02 05:59:40,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:59:40,396 INFO L413 NwaCegarLoop]: 4429 mSDtfsCounter, 1992 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 4483 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 6629 SdHoareTripleChecker+Invalid, 4517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:59:40,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1992 Valid, 6629 Invalid, 4517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4483 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2023-04-02 05:59:40,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77525 states. [2023-04-02 05:59:47,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77525 to 77487. [2023-04-02 05:59:47,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77487 states, 77482 states have (on average 1.5901628765390672) internal successors, (123209), 77483 states have internal predecessors, (123209), 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 05:59:48,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77487 states to 77487 states and 123212 transitions. [2023-04-02 05:59:48,010 INFO L78 Accepts]: Start accepts. Automaton has 77487 states and 123212 transitions. Word has length 481 [2023-04-02 05:59:48,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:59:48,010 INFO L495 AbstractCegarLoop]: Abstraction has 77487 states and 123212 transitions. [2023-04-02 05:59:48,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.5) internal successors, (478), 3 states have internal predecessors, (478), 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 05:59:48,011 INFO L276 IsEmpty]: Start isEmpty. Operand 77487 states and 123212 transitions. [2023-04-02 05:59:48,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2023-04-02 05:59:48,139 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:59:48,140 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:48,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 05:59:48,140 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:59:48,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:59:48,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1874329526, now seen corresponding path program 1 times [2023-04-02 05:59:48,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:59:48,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368342989] [2023-04-02 05:59:48,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:59:48,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:59:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:49,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:59:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:49,819 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 05:59:49,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:59:49,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368342989] [2023-04-02 05:59:49,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368342989] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:59:49,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:59:49,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 05:59:49,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048900502] [2023-04-02 05:59:49,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:59:49,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:59:49,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:59:49,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:59:49,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:59:49,822 INFO L87 Difference]: Start difference. First operand 77487 states and 123212 transitions. Second operand has 6 states, 6 states have (on average 80.0) internal successors, (480), 5 states have internal predecessors, (480), 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 06:00:14,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:00:14,655 INFO L93 Difference]: Finished difference Result 229646 states and 365157 transitions. [2023-04-02 06:00:14,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:00:14,656 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 80.0) internal successors, (480), 5 states have internal predecessors, (480), 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 483 [2023-04-02 06:00:14,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:00:14,979 INFO L225 Difference]: With dead ends: 229646 [2023-04-02 06:00:14,980 INFO L226 Difference]: Without dead ends: 152496 [2023-04-02 06:00:15,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:00:15,213 INFO L413 NwaCegarLoop]: 3472 mSDtfsCounter, 4403 mSDsluCounter, 4374 mSDsCounter, 0 mSdLazyCounter, 3629 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4403 SdHoareTripleChecker+Valid, 7846 SdHoareTripleChecker+Invalid, 3670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:00:15,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4403 Valid, 7846 Invalid, 3670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3629 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2023-04-02 06:00:15,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152496 states. [2023-04-02 06:00:33,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152496 to 152465. [2023-04-02 06:00:33,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152465 states, 152460 states have (on average 1.582933228387774) internal successors, (241334), 152461 states have internal predecessors, (241334), 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 06:00:34,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152465 states to 152465 states and 241337 transitions. [2023-04-02 06:00:34,595 INFO L78 Accepts]: Start accepts. Automaton has 152465 states and 241337 transitions. Word has length 483 [2023-04-02 06:00:34,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:00:34,596 INFO L495 AbstractCegarLoop]: Abstraction has 152465 states and 241337 transitions. [2023-04-02 06:00:34,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.0) internal successors, (480), 5 states have internal predecessors, (480), 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 06:00:34,596 INFO L276 IsEmpty]: Start isEmpty. Operand 152465 states and 241337 transitions. [2023-04-02 06:00:35,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2023-04-02 06:00:35,032 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:00:35,033 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:35,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:00:35,043 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:00:35,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:00:35,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1776583307, now seen corresponding path program 1 times [2023-04-02 06:00:35,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:00:35,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539936218] [2023-04-02 06:00:35,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:00:35,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:00:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:00:37,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:00:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:00:37,880 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 06:00:37,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:00:37,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539936218] [2023-04-02 06:00:37,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539936218] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:00:37,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:00:37,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:00:37,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732500228] [2023-04-02 06:00:37,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:00:37,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 06:00:37,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:00:37,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 06:00:37,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:00:37,884 INFO L87 Difference]: Start difference. First operand 152465 states and 241337 transitions. Second operand has 5 states, 5 states have (on average 96.4) internal successors, (482), 4 states have internal predecessors, (482), 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)