/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:21:09,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:21:09,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:21:09,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:21:09,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:21:09,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:21:09,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:21:09,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:21:09,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:21:09,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:21:09,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:21:09,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:21:09,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:21:09,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:21:09,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:21:09,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:21:09,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:21:09,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:21:09,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:21:09,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:21:09,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:21:09,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:21:09,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:21:09,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:21:09,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 06:21:09,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:21:09,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:21:09,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:21:09,326 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 06:21:09,349 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:21:09,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:21:09,350 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:21:09,350 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:21:09,351 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:21:09,351 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:21:09,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:21:09,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:21:09,352 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:21:09,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:21:09,353 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:21:09,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:21:09,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:21:09,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:21:09,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:21:09,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:21:09,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:21:09,354 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:21:09,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:21:09,354 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:21:09,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:21:09,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:21:09,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:21:09,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:21:09,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:21:09,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:21:09,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:21:09,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:21:09,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:21:09,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:21:09,355 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:21:09,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:21:09,356 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:21:09,356 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:21:09,356 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:21:09,356 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:21:09,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:21:09,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:21:09,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:21:09,548 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:21:09,548 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:21:09,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-04-02 06:21:10,605 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:21:10,799 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:21:10,800 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-04-02 06:21:10,817 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78ad6edbf/69f122d4dc3f4261a7d85ccfa0b3ca32/FLAGdae1cca1a [2023-04-02 06:21:10,827 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78ad6edbf/69f122d4dc3f4261a7d85ccfa0b3ca32 [2023-04-02 06:21:10,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:21:10,830 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:21:10,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:21:10,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:21:10,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:21:10,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:21:10" (1/1) ... [2023-04-02 06:21:10,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@581c6a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:21:10, skipping insertion in model container [2023-04-02 06:21:10,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:21:10" (1/1) ... [2023-04-02 06:21:10,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:21:10,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:21:11,098 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[10019,10032] [2023-04-02 06:21:11,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:21:11,204 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:21:11,253 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[10019,10032] [2023-04-02 06:21:11,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:21:11,337 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:21:11,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:21:11 WrapperNode [2023-04-02 06:21:11,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:21:11,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:21:11,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:21:11,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:21:11,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:21:11" (1/1) ... [2023-04-02 06:21:11,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:21:11" (1/1) ... [2023-04-02 06:21:11,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:21:11" (1/1) ... [2023-04-02 06:21:11,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:21:11" (1/1) ... [2023-04-02 06:21:11,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:21:11" (1/1) ... [2023-04-02 06:21:11,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:21:11" (1/1) ... [2023-04-02 06:21:11,394 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:21:11" (1/1) ... [2023-04-02 06:21:11,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:21:11" (1/1) ... [2023-04-02 06:21:11,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:21:11,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:21:11,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:21:11,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:21:11,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:21:11" (1/1) ... [2023-04-02 06:21:11,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:21:11,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:21:11,438 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 06:21:11,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 06:21:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:21:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:21:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:21:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:21:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:21:11,533 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:21:11,533 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:21:11,533 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:21:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:21:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:21:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:21:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:21:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:21:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:21:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:21:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:21:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:21:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:21:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:21:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 06:21:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-02 06:21:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:21:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:21:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:21:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:21:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:21:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:21:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:21:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:21:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:21:11,675 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:21:11,676 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:21:12,314 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:21:12,327 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:21:12,327 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:21:12,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:21:12 BoogieIcfgContainer [2023-04-02 06:21:12,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:21:12,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:21:12,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:21:12,334 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:21:12,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:21:10" (1/3) ... [2023-04-02 06:21:12,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4719da9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:21:12, skipping insertion in model container [2023-04-02 06:21:12,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:21:11" (2/3) ... [2023-04-02 06:21:12,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4719da9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:21:12, skipping insertion in model container [2023-04-02 06:21:12,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:21:12" (3/3) ... [2023-04-02 06:21:12,337 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-04-02 06:21:12,350 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:21:12,350 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 06:21:12,402 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:21:12,407 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;@1592b9e9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:21:12,407 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 06:21:12,422 INFO L276 IsEmpty]: Start isEmpty. Operand has 264 states, 258 states have (on average 1.7209302325581395) internal successors, (444), 259 states have internal predecessors, (444), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 06:21:12,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-02 06:21:12,435 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:21:12,436 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] [2023-04-02 06:21:12,437 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:21:12,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:21:12,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1612622836, now seen corresponding path program 1 times [2023-04-02 06:21:12,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:21:12,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258232620] [2023-04-02 06:21:12,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:21:12,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:21:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:13,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:21:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:13,290 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 06:21:13,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:21:13,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258232620] [2023-04-02 06:21:13,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258232620] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:21:13,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:21:13,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:21:13,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192244797] [2023-04-02 06:21:13,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:21:13,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:21:13,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:21:13,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:21:13,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:21:13,328 INFO L87 Difference]: Start difference. First operand has 264 states, 258 states have (on average 1.7209302325581395) internal successors, (444), 259 states have internal predecessors, (444), 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 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 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 06:21:14,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:21:14,575 INFO L93 Difference]: Finished difference Result 1176 states and 1900 transitions. [2023-04-02 06:21:14,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:21:14,577 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 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 101 [2023-04-02 06:21:14,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:21:14,589 INFO L225 Difference]: With dead ends: 1176 [2023-04-02 06:21:14,589 INFO L226 Difference]: Without dead ends: 1027 [2023-04-02 06:21:14,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:21:14,594 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 3692 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3692 SdHoareTripleChecker+Valid, 2931 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:21:14,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3692 Valid, 2931 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:21:14,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2023-04-02 06:21:14,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 400. [2023-04-02 06:21:14,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 396 states have (on average 1.5) internal successors, (594), 396 states have internal predecessors, (594), 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 06:21:14,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 597 transitions. [2023-04-02 06:21:14,657 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 597 transitions. Word has length 101 [2023-04-02 06:21:14,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:21:14,658 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 597 transitions. [2023-04-02 06:21:14,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 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 06:21:14,658 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 597 transitions. [2023-04-02 06:21:14,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-02 06:21:14,660 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:21:14,660 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] [2023-04-02 06:21:14,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:21:14,661 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:21:14,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:21:14,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1207458237, now seen corresponding path program 1 times [2023-04-02 06:21:14,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:21:14,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396589621] [2023-04-02 06:21:14,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:21:14,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:21:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:15,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:21:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:15,092 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 06:21:15,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:21:15,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396589621] [2023-04-02 06:21:15,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396589621] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:21:15,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:21:15,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:21:15,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928643013] [2023-04-02 06:21:15,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:21:15,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:21:15,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:21:15,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:21:15,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:21:15,095 INFO L87 Difference]: Start difference. First operand 400 states and 597 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 06:21:16,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:21:16,287 INFO L93 Difference]: Finished difference Result 1977 states and 3061 transitions. [2023-04-02 06:21:16,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:21:16,288 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 102 [2023-04-02 06:21:16,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:21:16,293 INFO L225 Difference]: With dead ends: 1977 [2023-04-02 06:21:16,293 INFO L226 Difference]: Without dead ends: 1681 [2023-04-02 06:21:16,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:21:16,295 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 2431 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2431 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:21:16,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2431 Valid, 1701 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:21:16,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2023-04-02 06:21:16,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1671. [2023-04-02 06:21:16,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1667 states have (on average 1.5458908218356329) internal successors, (2577), 1667 states have internal predecessors, (2577), 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 06:21:16,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2580 transitions. [2023-04-02 06:21:16,490 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2580 transitions. Word has length 102 [2023-04-02 06:21:16,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:21:16,491 INFO L495 AbstractCegarLoop]: Abstraction has 1671 states and 2580 transitions. [2023-04-02 06:21:16,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 06:21:16,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2580 transitions. [2023-04-02 06:21:16,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 06:21:16,493 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:21:16,493 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] [2023-04-02 06:21:16,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:21:16,494 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:21:16,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:21:16,494 INFO L85 PathProgramCache]: Analyzing trace with hash -761221972, now seen corresponding path program 1 times [2023-04-02 06:21:16,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:21:16,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614979490] [2023-04-02 06:21:16,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:21:16,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:21:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:16,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:21:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:16,742 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 06:21:16,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:21:16,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614979490] [2023-04-02 06:21:16,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614979490] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:21:16,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:21:16,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:21:16,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885503902] [2023-04-02 06:21:16,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:21:16,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:21:16,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:21:16,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:21:16,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:21:16,747 INFO L87 Difference]: Start difference. First operand 1671 states and 2580 transitions. Second operand has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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 06:21:17,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:21:17,824 INFO L93 Difference]: Finished difference Result 4578 states and 7148 transitions. [2023-04-02 06:21:17,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:21:17,825 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2023-04-02 06:21:17,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:21:17,834 INFO L225 Difference]: With dead ends: 4578 [2023-04-02 06:21:17,834 INFO L226 Difference]: Without dead ends: 2979 [2023-04-02 06:21:17,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:21:17,841 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 1458 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:21:17,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 359 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:21:17,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2023-04-02 06:21:18,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2977. [2023-04-02 06:21:18,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2977 states, 2973 states have (on average 1.555331315169862) internal successors, (4624), 2973 states have internal predecessors, (4624), 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 06:21:18,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2977 states to 2977 states and 4627 transitions. [2023-04-02 06:21:18,126 INFO L78 Accepts]: Start accepts. Automaton has 2977 states and 4627 transitions. Word has length 103 [2023-04-02 06:21:18,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:21:18,127 INFO L495 AbstractCegarLoop]: Abstraction has 2977 states and 4627 transitions. [2023-04-02 06:21:18,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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 06:21:18,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2977 states and 4627 transitions. [2023-04-02 06:21:18,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 06:21:18,129 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:21:18,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:21:18,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:21:18,129 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:21:18,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:21:18,130 INFO L85 PathProgramCache]: Analyzing trace with hash 542251240, now seen corresponding path program 1 times [2023-04-02 06:21:18,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:21:18,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347785410] [2023-04-02 06:21:18,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:21:18,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:21:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:18,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:21:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:18,407 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 06:21:18,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:21:18,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347785410] [2023-04-02 06:21:18,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347785410] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:21:18,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:21:18,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:21:18,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96142972] [2023-04-02 06:21:18,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:21:18,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:21:18,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:21:18,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:21:18,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:21:18,410 INFO L87 Difference]: Start difference. First operand 2977 states and 4627 transitions. Second operand has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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 06:21:19,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:21:19,751 INFO L93 Difference]: Finished difference Result 8033 states and 12585 transitions. [2023-04-02 06:21:19,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:21:19,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2023-04-02 06:21:19,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:21:19,768 INFO L225 Difference]: With dead ends: 8033 [2023-04-02 06:21:19,768 INFO L226 Difference]: Without dead ends: 5259 [2023-04-02 06:21:19,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:21:19,781 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 1344 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:21:19,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 376 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:21:19,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5259 states. [2023-04-02 06:21:20,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5259 to 5257. [2023-04-02 06:21:20,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 5253 states have (on average 1.559109080525414) internal successors, (8190), 5253 states have internal predecessors, (8190), 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 06:21:20,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 8193 transitions. [2023-04-02 06:21:20,282 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 8193 transitions. Word has length 103 [2023-04-02 06:21:20,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:21:20,282 INFO L495 AbstractCegarLoop]: Abstraction has 5257 states and 8193 transitions. [2023-04-02 06:21:20,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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 06:21:20,282 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 8193 transitions. [2023-04-02 06:21:20,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 06:21:20,284 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:21:20,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:21:20,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:21:20,285 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:21:20,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:21:20,285 INFO L85 PathProgramCache]: Analyzing trace with hash 2049388505, now seen corresponding path program 1 times [2023-04-02 06:21:20,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:21:20,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367040937] [2023-04-02 06:21:20,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:21:20,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:21:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:20,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:21:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:20,553 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 06:21:20,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:21:20,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367040937] [2023-04-02 06:21:20,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367040937] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:21:20,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:21:20,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:21:20,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698944329] [2023-04-02 06:21:20,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:21:20,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:21:20,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:21:20,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:21:20,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:21:20,555 INFO L87 Difference]: Start difference. First operand 5257 states and 8193 transitions. Second operand has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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 06:21:22,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:21:22,204 INFO L93 Difference]: Finished difference Result 14932 states and 23364 transitions. [2023-04-02 06:21:22,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:21:22,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2023-04-02 06:21:22,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:21:22,237 INFO L225 Difference]: With dead ends: 14932 [2023-04-02 06:21:22,237 INFO L226 Difference]: Without dead ends: 9837 [2023-04-02 06:21:22,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:21:22,248 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 1350 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:21:22,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 365 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:21:22,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9837 states. [2023-04-02 06:21:23,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9837 to 9835. [2023-04-02 06:21:23,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9835 states, 9831 states have (on average 1.5577255619977621) internal successors, (15314), 9831 states have internal predecessors, (15314), 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 06:21:23,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9835 states to 9835 states and 15317 transitions. [2023-04-02 06:21:23,171 INFO L78 Accepts]: Start accepts. Automaton has 9835 states and 15317 transitions. Word has length 103 [2023-04-02 06:21:23,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:21:23,171 INFO L495 AbstractCegarLoop]: Abstraction has 9835 states and 15317 transitions. [2023-04-02 06:21:23,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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 06:21:23,171 INFO L276 IsEmpty]: Start isEmpty. Operand 9835 states and 15317 transitions. [2023-04-02 06:21:23,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 06:21:23,175 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:21:23,175 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] [2023-04-02 06:21:23,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:21:23,175 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:21:23,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:21:23,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1993639222, now seen corresponding path program 1 times [2023-04-02 06:21:23,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:21:23,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308854697] [2023-04-02 06:21:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:21:23,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:21:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:23,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:21:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:23,499 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 06:21:23,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:21:23,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308854697] [2023-04-02 06:21:23,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308854697] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:21:23,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:21:23,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:21:23,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954348428] [2023-04-02 06:21:23,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:21:23,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:21:23,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:21:23,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:21:23,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:21:23,501 INFO L87 Difference]: Start difference. First operand 9835 states and 15317 transitions. Second operand has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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 06:21:26,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:21:26,182 INFO L93 Difference]: Finished difference Result 28787 states and 44931 transitions. [2023-04-02 06:21:26,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:21:26,183 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2023-04-02 06:21:26,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:21:26,237 INFO L225 Difference]: With dead ends: 28787 [2023-04-02 06:21:26,238 INFO L226 Difference]: Without dead ends: 19077 [2023-04-02 06:21:26,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:21:26,257 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 1372 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:21:26,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 365 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:21:26,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19077 states. [2023-04-02 06:21:27,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19077 to 19075. [2023-04-02 06:21:27,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19075 states, 19071 states have (on average 1.5538251795920508) internal successors, (29633), 19071 states have internal predecessors, (29633), 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 06:21:27,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19075 states to 19075 states and 29636 transitions. [2023-04-02 06:21:27,970 INFO L78 Accepts]: Start accepts. Automaton has 19075 states and 29636 transitions. Word has length 103 [2023-04-02 06:21:27,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:21:27,971 INFO L495 AbstractCegarLoop]: Abstraction has 19075 states and 29636 transitions. [2023-04-02 06:21:27,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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 06:21:27,971 INFO L276 IsEmpty]: Start isEmpty. Operand 19075 states and 29636 transitions. [2023-04-02 06:21:27,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 06:21:27,975 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:21:27,975 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] [2023-04-02 06:21:27,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:21:27,975 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:21:27,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:21:27,976 INFO L85 PathProgramCache]: Analyzing trace with hash 2022095291, now seen corresponding path program 1 times [2023-04-02 06:21:27,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:21:27,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922161376] [2023-04-02 06:21:27,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:21:27,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:21:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:28,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:21:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:28,244 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 06:21:28,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:21:28,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922161376] [2023-04-02 06:21:28,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922161376] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:21:28,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:21:28,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:21:28,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583945161] [2023-04-02 06:21:28,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:21:28,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:21:28,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:21:28,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:21:28,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:21:28,246 INFO L87 Difference]: Start difference. First operand 19075 states and 29636 transitions. Second operand has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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 06:21:32,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:21:32,387 INFO L93 Difference]: Finished difference Result 56609 states and 88060 transitions. [2023-04-02 06:21:32,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:21:32,393 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2023-04-02 06:21:32,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:21:32,492 INFO L225 Difference]: With dead ends: 56609 [2023-04-02 06:21:32,492 INFO L226 Difference]: Without dead ends: 37629 [2023-04-02 06:21:32,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:21:32,528 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 1398 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:21:32,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1398 Valid, 363 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:21:32,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37629 states. [2023-04-02 06:21:36,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37629 to 37627. [2023-04-02 06:21:36,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37627 states, 37623 states have (on average 1.5480158413736278) internal successors, (58241), 37623 states have internal predecessors, (58241), 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 06:21:36,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37627 states to 37627 states and 58244 transitions. [2023-04-02 06:21:36,475 INFO L78 Accepts]: Start accepts. Automaton has 37627 states and 58244 transitions. Word has length 103 [2023-04-02 06:21:36,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:21:36,475 INFO L495 AbstractCegarLoop]: Abstraction has 37627 states and 58244 transitions. [2023-04-02 06:21:36,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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 06:21:36,476 INFO L276 IsEmpty]: Start isEmpty. Operand 37627 states and 58244 transitions. [2023-04-02 06:21:36,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 06:21:36,488 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:21:36,489 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] [2023-04-02 06:21:36,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:21:36,489 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:21:36,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:21:36,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1361122205, now seen corresponding path program 1 times [2023-04-02 06:21:36,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:21:36,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942024764] [2023-04-02 06:21:36,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:21:36,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:21:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:36,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:21:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:36,744 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 06:21:36,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:21:36,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942024764] [2023-04-02 06:21:36,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942024764] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:21:36,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:21:36,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:21:36,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950052697] [2023-04-02 06:21:36,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:21:36,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:21:36,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:21:36,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:21:36,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:21:36,746 INFO L87 Difference]: Start difference. First operand 37627 states and 58244 transitions. Second operand has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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 06:21:44,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:21:44,244 INFO L93 Difference]: Finished difference Result 107199 states and 166080 transitions. [2023-04-02 06:21:44,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:21:44,250 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2023-04-02 06:21:44,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:21:44,396 INFO L225 Difference]: With dead ends: 107199 [2023-04-02 06:21:44,396 INFO L226 Difference]: Without dead ends: 69628 [2023-04-02 06:21:44,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:21:44,459 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 1460 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:21:44,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1460 Valid, 357 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:21:44,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69628 states. [2023-04-02 06:21:51,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69628 to 69626. [2023-04-02 06:21:51,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69626 states, 69622 states have (on average 1.5395420987618855) internal successors, (107186), 69622 states have internal predecessors, (107186), 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 06:21:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69626 states to 69626 states and 107189 transitions. [2023-04-02 06:21:51,767 INFO L78 Accepts]: Start accepts. Automaton has 69626 states and 107189 transitions. Word has length 103 [2023-04-02 06:21:51,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:21:51,768 INFO L495 AbstractCegarLoop]: Abstraction has 69626 states and 107189 transitions. [2023-04-02 06:21:51,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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 06:21:51,768 INFO L276 IsEmpty]: Start isEmpty. Operand 69626 states and 107189 transitions. [2023-04-02 06:21:51,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-04-02 06:21:51,779 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:21:51,779 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] [2023-04-02 06:21:51,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:21:51,779 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:21:51,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:21:51,780 INFO L85 PathProgramCache]: Analyzing trace with hash 928831378, now seen corresponding path program 1 times [2023-04-02 06:21:51,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:21:51,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111616259] [2023-04-02 06:21:51,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:21:51,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:21:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:52,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:21:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:52,162 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 06:21:52,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:21:52,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111616259] [2023-04-02 06:21:52,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111616259] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:21:52,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:21:52,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:21:52,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149553951] [2023-04-02 06:21:52,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:21:52,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:21:52,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:21:52,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:21:52,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:21:52,164 INFO L87 Difference]: Start difference. First operand 69626 states and 107189 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 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 06:22:06,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:06,349 INFO L93 Difference]: Finished difference Result 138876 states and 213142 transitions. [2023-04-02 06:22:06,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:22:06,350 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 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 104 [2023-04-02 06:22:06,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:06,646 INFO L225 Difference]: With dead ends: 138876 [2023-04-02 06:22:06,646 INFO L226 Difference]: Without dead ends: 138874 [2023-04-02 06:22:06,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:22:06,694 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 360 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:06,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 1486 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:22:06,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138874 states. [2023-04-02 06:22:15,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138874 to 71034. [2023-04-02 06:22:15,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71034 states, 71030 states have (on average 1.5288469660706743) internal successors, (108594), 71030 states have internal predecessors, (108594), 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 06:22:15,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71034 states to 71034 states and 108597 transitions. [2023-04-02 06:22:15,907 INFO L78 Accepts]: Start accepts. Automaton has 71034 states and 108597 transitions. Word has length 104 [2023-04-02 06:22:15,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:15,907 INFO L495 AbstractCegarLoop]: Abstraction has 71034 states and 108597 transitions. [2023-04-02 06:22:15,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 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 06:22:15,908 INFO L276 IsEmpty]: Start isEmpty. Operand 71034 states and 108597 transitions. [2023-04-02 06:22:15,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 06:22:15,921 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:15,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:22:15,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:22:15,921 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:22:15,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:15,922 INFO L85 PathProgramCache]: Analyzing trace with hash -928672541, now seen corresponding path program 1 times [2023-04-02 06:22:15,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:15,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810460339] [2023-04-02 06:22:15,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:15,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:16,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:16,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:16,554 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 06:22:16,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:16,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810460339] [2023-04-02 06:22:16,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810460339] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:16,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:16,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:22:16,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859751904] [2023-04-02 06:22:16,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:16,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:22:16,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:16,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:22:16,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:22:16,556 INFO L87 Difference]: Start difference. First operand 71034 states and 108597 transitions. Second operand has 11 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 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 06:22:57,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:57,555 INFO L93 Difference]: Finished difference Result 363956 states and 552333 transitions. [2023-04-02 06:22:57,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-02 06:22:57,555 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2023-04-02 06:22:57,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:58,518 INFO L225 Difference]: With dead ends: 363956 [2023-04-02 06:22:58,518 INFO L226 Difference]: Without dead ends: 305009 [2023-04-02 06:22:58,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=217, Invalid=653, Unknown=0, NotChecked=0, Total=870 [2023-04-02 06:22:58,650 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 3700 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 1950 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3700 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 1973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:58,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3700 Valid, 1746 Invalid, 1973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1950 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 06:22:58,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305009 states. [2023-04-02 06:23:11,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305009 to 71306. [2023-04-02 06:23:11,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71306 states, 71302 states have (on average 1.5280076295195086) internal successors, (108950), 71302 states have internal predecessors, (108950), 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 06:23:11,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71306 states to 71306 states and 108953 transitions. [2023-04-02 06:23:11,417 INFO L78 Accepts]: Start accepts. Automaton has 71306 states and 108953 transitions. Word has length 105 [2023-04-02 06:23:11,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:23:11,417 INFO L495 AbstractCegarLoop]: Abstraction has 71306 states and 108953 transitions. [2023-04-02 06:23:11,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 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 06:23:11,417 INFO L276 IsEmpty]: Start isEmpty. Operand 71306 states and 108953 transitions. [2023-04-02 06:23:11,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 06:23:11,431 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:23:11,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:23:11,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:23:11,431 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:23:11,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:23:11,432 INFO L85 PathProgramCache]: Analyzing trace with hash 911848291, now seen corresponding path program 1 times [2023-04-02 06:23:11,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:23:11,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612082316] [2023-04-02 06:23:11,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:23:11,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:23:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:23:11,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:23:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:23:11,927 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 06:23:11,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:23:11,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612082316] [2023-04-02 06:23:11,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612082316] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:23:11,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:23:11,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:23:11,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298052492] [2023-04-02 06:23:11,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:23:11,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 06:23:11,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:23:11,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 06:23:11,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:23:11,928 INFO L87 Difference]: Start difference. First operand 71306 states and 108953 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:23:31,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:23:31,943 INFO L93 Difference]: Finished difference Result 202286 states and 308443 transitions. [2023-04-02 06:23:31,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 06:23:31,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2023-04-02 06:23:31,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:23:32,392 INFO L225 Difference]: With dead ends: 202286 [2023-04-02 06:23:32,392 INFO L226 Difference]: Without dead ends: 133036 [2023-04-02 06:23:32,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:23:32,467 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 251 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:23:32,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 1011 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:23:32,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133036 states. [2023-04-02 06:23:51,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133036 to 133034. [2023-04-02 06:23:51,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133034 states, 133030 states have (on average 1.5170563030895288) internal successors, (201814), 133030 states have internal predecessors, (201814), 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 06:23:52,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133034 states to 133034 states and 201817 transitions. [2023-04-02 06:23:52,202 INFO L78 Accepts]: Start accepts. Automaton has 133034 states and 201817 transitions. Word has length 105 [2023-04-02 06:23:52,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:23:52,202 INFO L495 AbstractCegarLoop]: Abstraction has 133034 states and 201817 transitions. [2023-04-02 06:23:52,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:23:52,202 INFO L276 IsEmpty]: Start isEmpty. Operand 133034 states and 201817 transitions. [2023-04-02 06:23:52,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-04-02 06:23:52,214 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:23:52,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:23:52,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:23:52,215 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:23:52,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:23:52,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1831655259, now seen corresponding path program 1 times [2023-04-02 06:23:52,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:23:52,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062027285] [2023-04-02 06:23:52,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:23:52,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:23:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:23:52,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:23:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:23:52,393 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 06:23:52,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:23:52,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062027285] [2023-04-02 06:23:52,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062027285] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:23:52,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:23:52,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:23:52,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752760200] [2023-04-02 06:23:52,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:23:52,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:23:52,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:23:52,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:23:52,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:23:52,395 INFO L87 Difference]: Start difference. First operand 133034 states and 201817 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:24:20,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:24:20,138 INFO L93 Difference]: Finished difference Result 278973 states and 423166 transitions. [2023-04-02 06:24:20,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:24:20,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 106 [2023-04-02 06:24:20,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:24:20,458 INFO L225 Difference]: With dead ends: 278973 [2023-04-02 06:24:20,459 INFO L226 Difference]: Without dead ends: 176467 [2023-04-02 06:24:20,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:24:20,557 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 242 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:24:20,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 689 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:24:20,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176467 states.