/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.6.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:20:47,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:20:47,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:20:47,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:20:47,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:20:47,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:20:47,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:20:47,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:20:47,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:20:47,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:20:47,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:20:47,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:20:47,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:20:47,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:20:47,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:20:47,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:20:47,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:20:47,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:20:47,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:20:47,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:20:47,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:20:47,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:20:47,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:20:47,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:20:47,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 06:20:47,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:20:47,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:20:47,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:20:47,109 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 06:20:47,135 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:20:47,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:20:47,136 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:20:47,136 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:20:47,137 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:20:47,137 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:20:47,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:20:47,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:20:47,138 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:20:47,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:20:47,139 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:20:47,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:20:47,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:20:47,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:20:47,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:20:47,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:20:47,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:20:47,140 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:20:47,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:20:47,140 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:20:47,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:20:47,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:20:47,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:20:47,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:20:47,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:20:47,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:20:47,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:20:47,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:20:47,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:20:47,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:20:47,142 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:20:47,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:20:47,142 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:20:47,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:20:47,142 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:20:47,142 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:20:47,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:20:47,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:20:47,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:20:47,398 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:20:47,398 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:20:47,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-04-02 06:20:48,645 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:20:48,857 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:20:48,857 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-04-02 06:20:48,867 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/744992616/8a396843cacc4c5383d91c978e282f17/FLAG40e681882 [2023-04-02 06:20:48,881 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/744992616/8a396843cacc4c5383d91c978e282f17 [2023-04-02 06:20:48,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:20:48,884 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:20:48,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:20:48,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:20:48,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:20:48,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:20:48" (1/1) ... [2023-04-02 06:20:48,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f0fa150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:20:48, skipping insertion in model container [2023-04-02 06:20:48,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:20:48" (1/1) ... [2023-04-02 06:20:48,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:20:48,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:20:49,122 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.6.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7401,7414] [2023-04-02 06:20:49,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:20:49,178 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:20:49,223 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.6.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7401,7414] [2023-04-02 06:20:49,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:20:49,269 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:20:49,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:20:49 WrapperNode [2023-04-02 06:20:49,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:20:49,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:20:49,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:20:49,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:20:49,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:20:49" (1/1) ... [2023-04-02 06:20:49,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:20:49" (1/1) ... [2023-04-02 06:20:49,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:20:49" (1/1) ... [2023-04-02 06:20:49,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:20:49" (1/1) ... [2023-04-02 06:20:49,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:20:49" (1/1) ... [2023-04-02 06:20:49,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:20:49" (1/1) ... [2023-04-02 06:20:49,329 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:20:49" (1/1) ... [2023-04-02 06:20:49,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:20:49" (1/1) ... [2023-04-02 06:20:49,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:20:49,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:20:49,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:20:49,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:20:49,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:20:49" (1/1) ... [2023-04-02 06:20:49,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:20:49,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:20:49,366 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 06:20:49,368 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 06:20:49,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:20:49,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:20:49,397 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:20:49,397 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:20:49,397 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:20:49,397 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:20:49,398 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:20:49,398 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:20:49,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:20:49,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:20:49,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:20:49,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 06:20:49,398 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:20:49,398 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:20:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:20:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:20:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:20:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:20:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:20:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:20:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 06:20:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-02 06:20:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:20:49,400 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:20:49,400 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:20:49,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:20:49,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:20:49,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:20:49,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:20:49,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:20:49,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:20:49,557 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:20:49,559 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:20:50,275 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:20:50,289 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:20:50,289 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:20:50,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:20:50 BoogieIcfgContainer [2023-04-02 06:20:50,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:20:50,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:20:50,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:20:50,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:20:50,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:20:48" (1/3) ... [2023-04-02 06:20:50,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b770f75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:20:50, skipping insertion in model container [2023-04-02 06:20:50,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:20:49" (2/3) ... [2023-04-02 06:20:50,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b770f75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:20:50, skipping insertion in model container [2023-04-02 06:20:50,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:20:50" (3/3) ... [2023-04-02 06:20:50,300 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-04-02 06:20:50,318 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:20:50,318 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 06:20:50,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:20:50,371 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;@75be6f26, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:20:50,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 06:20:50,376 INFO L276 IsEmpty]: Start isEmpty. Operand has 165 states, 159 states have (on average 1.6981132075471699) internal successors, (270), 160 states have internal predecessors, (270), 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 06:20:50,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-02 06:20:50,386 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:20:50,386 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] [2023-04-02 06:20:50,387 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:20:50,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:20:50,391 INFO L85 PathProgramCache]: Analyzing trace with hash -431441751, now seen corresponding path program 1 times [2023-04-02 06:20:50,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:20:50,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560727754] [2023-04-02 06:20:50,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:20:50,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:20:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:20:51,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:20:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:20:51,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:20:51,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:20:51,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560727754] [2023-04-02 06:20:51,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560727754] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:20:51,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:20:51,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:20:51,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168658470] [2023-04-02 06:20:51,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:20:51,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:20:51,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:20:51,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:20:51,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:20:51,252 INFO L87 Difference]: Start difference. First operand has 165 states, 159 states have (on average 1.6981132075471699) internal successors, (270), 160 states have internal predecessors, (270), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:20:52,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:20:52,472 INFO L93 Difference]: Finished difference Result 383 states and 616 transitions. [2023-04-02 06:20:52,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:20:52,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 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 77 [2023-04-02 06:20:52,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:20:52,491 INFO L225 Difference]: With dead ends: 383 [2023-04-02 06:20:52,491 INFO L226 Difference]: Without dead ends: 258 [2023-04-02 06:20:52,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:20:52,500 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 202 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:20:52,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 586 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:20:52,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-04-02 06:20:52,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2023-04-02 06:20:52,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 252 states have (on average 1.496031746031746) internal successors, (377), 252 states have internal predecessors, (377), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:20:52,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 380 transitions. [2023-04-02 06:20:52,598 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 380 transitions. Word has length 77 [2023-04-02 06:20:52,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:20:52,599 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 380 transitions. [2023-04-02 06:20:52,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:20:52,599 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 380 transitions. [2023-04-02 06:20:52,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-04-02 06:20:52,606 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:20:52,606 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] [2023-04-02 06:20:52,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:20:52,607 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:20:52,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:20:52,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1218454865, now seen corresponding path program 1 times [2023-04-02 06:20:52,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:20:52,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064831274] [2023-04-02 06:20:52,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:20:52,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:20:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:20:52,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:20:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:20:52,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:20:52,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:20:52,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064831274] [2023-04-02 06:20:52,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064831274] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:20:52,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:20:52,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:20:52,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877734559] [2023-04-02 06:20:52,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:20:52,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:20:52,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:20:52,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:20:52,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:20:52,989 INFO L87 Difference]: Start difference. First operand 256 states and 380 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:20:53,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:20:53,816 INFO L93 Difference]: Finished difference Result 640 states and 992 transitions. [2023-04-02 06:20:53,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:20:53,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 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 78 [2023-04-02 06:20:53,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:20:53,820 INFO L225 Difference]: With dead ends: 640 [2023-04-02 06:20:53,820 INFO L226 Difference]: Without dead ends: 432 [2023-04-02 06:20:53,822 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 06:20:53,823 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 162 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:20:53,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 508 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:20:53,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-04-02 06:20:53,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 430. [2023-04-02 06:20:53,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 426 states have (on average 1.5352112676056338) internal successors, (654), 426 states have internal predecessors, (654), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:20:53,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 657 transitions. [2023-04-02 06:20:53,858 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 657 transitions. Word has length 78 [2023-04-02 06:20:53,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:20:53,859 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 657 transitions. [2023-04-02 06:20:53,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:20:53,859 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 657 transitions. [2023-04-02 06:20:53,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-02 06:20:53,863 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:20:53,863 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] [2023-04-02 06:20:53,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:20:53,864 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:20:53,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:20:53,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1791221548, now seen corresponding path program 1 times [2023-04-02 06:20:53,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:20:53,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948292538] [2023-04-02 06:20:53,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:20:53,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:20:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:20:54,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:20:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:20:54,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:20:54,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:20:54,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948292538] [2023-04-02 06:20:54,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948292538] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:20:54,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:20:54,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:20:54,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71233897] [2023-04-02 06:20:54,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:20:54,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:20:54,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:20:54,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:20:54,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:20:54,138 INFO L87 Difference]: Start difference. First operand 430 states and 657 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:20:54,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:20:54,864 INFO L93 Difference]: Finished difference Result 1130 states and 1771 transitions. [2023-04-02 06:20:54,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:20:54,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 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 79 [2023-04-02 06:20:54,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:20:54,868 INFO L225 Difference]: With dead ends: 1130 [2023-04-02 06:20:54,868 INFO L226 Difference]: Without dead ends: 748 [2023-04-02 06:20:54,870 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 06:20:54,871 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 157 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:20:54,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 493 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:20:54,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2023-04-02 06:20:54,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 746. [2023-04-02 06:20:54,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 742 states have (on average 1.5552560646900269) internal successors, (1154), 742 states have internal predecessors, (1154), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:20:54,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1157 transitions. [2023-04-02 06:20:54,928 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1157 transitions. Word has length 79 [2023-04-02 06:20:54,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:20:54,928 INFO L495 AbstractCegarLoop]: Abstraction has 746 states and 1157 transitions. [2023-04-02 06:20:54,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:20:54,929 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1157 transitions. [2023-04-02 06:20:54,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-02 06:20:54,929 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:20:54,930 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] [2023-04-02 06:20:54,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:20:54,930 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:20:54,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:20:54,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1906101690, now seen corresponding path program 1 times [2023-04-02 06:20:54,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:20:54,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26724487] [2023-04-02 06:20:54,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:20:54,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:20:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:20:55,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:20:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:20:55,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:20:55,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:20:55,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26724487] [2023-04-02 06:20:55,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26724487] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:20:55,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:20:55,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:20:55,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049306569] [2023-04-02 06:20:55,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:20:55,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:20:55,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:20:55,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:20:55,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:20:55,165 INFO L87 Difference]: Start difference. First operand 746 states and 1157 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:20:55,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:20:55,986 INFO L93 Difference]: Finished difference Result 2014 states and 3167 transitions. [2023-04-02 06:20:55,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:20:55,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 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 80 [2023-04-02 06:20:55,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:20:55,993 INFO L225 Difference]: With dead ends: 2014 [2023-04-02 06:20:55,993 INFO L226 Difference]: Without dead ends: 1316 [2023-04-02 06:20:55,995 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 06:20:56,003 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 152 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:20:56,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 478 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:20:56,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2023-04-02 06:20:56,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1314. [2023-04-02 06:20:56,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1314 states, 1310 states have (on average 1.5618320610687022) internal successors, (2046), 1310 states have internal predecessors, (2046), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:20:56,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 2049 transitions. [2023-04-02 06:20:56,138 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 2049 transitions. Word has length 80 [2023-04-02 06:20:56,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:20:56,139 INFO L495 AbstractCegarLoop]: Abstraction has 1314 states and 2049 transitions. [2023-04-02 06:20:56,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:20:56,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 2049 transitions. [2023-04-02 06:20:56,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 06:20:56,140 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:20:56,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:20:56,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:20:56,141 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:20:56,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:20:56,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1793097965, now seen corresponding path program 1 times [2023-04-02 06:20:56,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:20:56,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115295331] [2023-04-02 06:20:56,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:20:56,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:20:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:20:56,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:20:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:20:56,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:20:56,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:20:56,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115295331] [2023-04-02 06:20:56,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115295331] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:20:56,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:20:56,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:20:56,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118139348] [2023-04-02 06:20:56,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:20:56,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:20:56,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:20:56,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:20:56,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:20:56,424 INFO L87 Difference]: Start difference. First operand 1314 states and 2049 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:20:57,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:20:57,253 INFO L93 Difference]: Finished difference Result 3590 states and 5635 transitions. [2023-04-02 06:20:57,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:20:57,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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 81 [2023-04-02 06:20:57,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:20:57,263 INFO L225 Difference]: With dead ends: 3590 [2023-04-02 06:20:57,263 INFO L226 Difference]: Without dead ends: 2324 [2023-04-02 06:20:57,266 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 06:20:57,267 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 147 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:20:57,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 463 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:20:57,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2324 states. [2023-04-02 06:20:57,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2324 to 2322. [2023-04-02 06:20:57,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2322 states, 2318 states have (on average 1.5591026747195857) internal successors, (3614), 2318 states have internal predecessors, (3614), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:20:57,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 3617 transitions. [2023-04-02 06:20:57,417 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 3617 transitions. Word has length 81 [2023-04-02 06:20:57,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:20:57,417 INFO L495 AbstractCegarLoop]: Abstraction has 2322 states and 3617 transitions. [2023-04-02 06:20:57,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:20:57,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 3617 transitions. [2023-04-02 06:20:57,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-02 06:20:57,418 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:20:57,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:20:57,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:20:57,419 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:20:57,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:20:57,419 INFO L85 PathProgramCache]: Analyzing trace with hash 900389199, now seen corresponding path program 1 times [2023-04-02 06:20:57,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:20:57,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942827281] [2023-04-02 06:20:57,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:20:57,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:20:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:20:57,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:20:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:20:57,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:20:57,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:20:57,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942827281] [2023-04-02 06:20:57,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942827281] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:20:57,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:20:57,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:20:57,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011811062] [2023-04-02 06:20:57,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:20:57,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:20:57,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:20:57,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:20:57,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:20:57,821 INFO L87 Difference]: Start difference. First operand 2322 states and 3617 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:20:59,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:20:59,984 INFO L93 Difference]: Finished difference Result 18240 states and 28600 transitions. [2023-04-02 06:20:59,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:20:59,985 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 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 82 [2023-04-02 06:20:59,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:21:00,058 INFO L225 Difference]: With dead ends: 18240 [2023-04-02 06:21:00,059 INFO L226 Difference]: Without dead ends: 15966 [2023-04-02 06:21:00,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:21:00,075 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 2496 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2496 SdHoareTripleChecker+Valid, 2950 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:21:00,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2496 Valid, 2950 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:21:00,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15966 states. [2023-04-02 06:21:00,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15966 to 4594. [2023-04-02 06:21:00,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4594 states, 4590 states have (on average 1.5507625272331154) internal successors, (7118), 4590 states have internal predecessors, (7118), 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 06:21:00,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4594 states to 4594 states and 7121 transitions. [2023-04-02 06:21:00,897 INFO L78 Accepts]: Start accepts. Automaton has 4594 states and 7121 transitions. Word has length 82 [2023-04-02 06:21:00,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:21:00,897 INFO L495 AbstractCegarLoop]: Abstraction has 4594 states and 7121 transitions. [2023-04-02 06:21:00,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 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 06:21:00,898 INFO L276 IsEmpty]: Start isEmpty. Operand 4594 states and 7121 transitions. [2023-04-02 06:21:00,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-02 06:21:00,899 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:21:00,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:21:00,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:21:00,899 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:21:00,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:21:00,900 INFO L85 PathProgramCache]: Analyzing trace with hash 2123728720, now seen corresponding path program 1 times [2023-04-02 06:21:00,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:21:00,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139099065] [2023-04-02 06:21:00,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:21:00,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:21:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:01,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:21:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:01,342 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 06:21:01,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:21:01,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139099065] [2023-04-02 06:21:01,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139099065] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:21:01,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:21:01,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:21:01,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218846971] [2023-04-02 06:21:01,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:21:01,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:21:01,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:21:01,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:21:01,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:21:01,345 INFO L87 Difference]: Start difference. First operand 4594 states and 7121 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:21:05,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:21:05,768 INFO L93 Difference]: Finished difference Result 28190 states and 43479 transitions. [2023-04-02 06:21:05,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:21:05,769 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-02 06:21:05,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:21:05,862 INFO L225 Difference]: With dead ends: 28190 [2023-04-02 06:21:05,862 INFO L226 Difference]: Without dead ends: 23644 [2023-04-02 06:21:05,883 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 06:21:05,883 INFO L413 NwaCegarLoop]: 707 mSDtfsCounter, 933 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 1842 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:21:05,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 1842 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-02 06:21:05,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23644 states. [2023-04-02 06:21:09,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23644 to 23634. [2023-04-02 06:21:09,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23634 states, 23630 states have (on average 1.5376216673719847) internal successors, (36334), 23630 states have internal predecessors, (36334), 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 06:21:09,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23634 states to 23634 states and 36337 transitions. [2023-04-02 06:21:09,653 INFO L78 Accepts]: Start accepts. Automaton has 23634 states and 36337 transitions. Word has length 83 [2023-04-02 06:21:09,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:21:09,653 INFO L495 AbstractCegarLoop]: Abstraction has 23634 states and 36337 transitions. [2023-04-02 06:21:09,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:21:09,654 INFO L276 IsEmpty]: Start isEmpty. Operand 23634 states and 36337 transitions. [2023-04-02 06:21:09,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-02 06:21:09,656 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:21:09,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:21:09,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:21:09,656 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:21:09,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:21:09,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1368170688, now seen corresponding path program 1 times [2023-04-02 06:21:09,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:21:09,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905494034] [2023-04-02 06:21:09,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:21:09,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:21:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:09,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:21:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:09,928 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 06:21:09,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:21:09,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905494034] [2023-04-02 06:21:09,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905494034] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:21:09,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:21:09,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:21:09,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306881109] [2023-04-02 06:21:09,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:21:09,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:21:09,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:21:09,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:21:09,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:21:09,930 INFO L87 Difference]: Start difference. First operand 23634 states and 36337 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 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 06:21:16,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:21:16,962 INFO L93 Difference]: Finished difference Result 65814 states and 100851 transitions. [2023-04-02 06:21:16,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:21:16,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 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 85 [2023-04-02 06:21:16,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:21:17,106 INFO L225 Difference]: With dead ends: 65814 [2023-04-02 06:21:17,107 INFO L226 Difference]: Without dead ends: 42228 [2023-04-02 06:21:17,159 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 06:21:17,160 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 168 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:21:17,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 556 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:21:17,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42228 states. [2023-04-02 06:21:22,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42228 to 42226. [2023-04-02 06:21:22,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42226 states, 42222 states have (on average 1.5199185258869783) internal successors, (64174), 42222 states have internal predecessors, (64174), 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 06:21:22,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42226 states to 42226 states and 64177 transitions. [2023-04-02 06:21:22,985 INFO L78 Accepts]: Start accepts. Automaton has 42226 states and 64177 transitions. Word has length 85 [2023-04-02 06:21:22,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:21:22,985 INFO L495 AbstractCegarLoop]: Abstraction has 42226 states and 64177 transitions. [2023-04-02 06:21:22,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 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 06:21:22,986 INFO L276 IsEmpty]: Start isEmpty. Operand 42226 states and 64177 transitions. [2023-04-02 06:21:22,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-02 06:21:22,987 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:21:22,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:21:22,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:21:22,987 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:21:22,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:21:22,988 INFO L85 PathProgramCache]: Analyzing trace with hash 325156089, now seen corresponding path program 1 times [2023-04-02 06:21:22,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:21:22,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602721699] [2023-04-02 06:21:22,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:21:22,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:21:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:23,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:21:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:23,305 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 06:21:23,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:21:23,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602721699] [2023-04-02 06:21:23,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602721699] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:21:23,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:21:23,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:21:23,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886808548] [2023-04-02 06:21:23,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:21:23,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:21:23,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:21:23,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:21:23,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:21:23,307 INFO L87 Difference]: Start difference. First operand 42226 states and 64177 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:21:35,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:21:35,676 INFO L93 Difference]: Finished difference Result 126582 states and 192435 transitions. [2023-04-02 06:21:35,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:21:35,677 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2023-04-02 06:21:35,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:21:35,973 INFO L225 Difference]: With dead ends: 126582 [2023-04-02 06:21:35,973 INFO L226 Difference]: Without dead ends: 84404 [2023-04-02 06:21:36,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:21:36,060 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 957 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:21:36,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 266 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:21:36,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84404 states. [2023-04-02 06:21:48,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84404 to 84402. [2023-04-02 06:21:48,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84402 states, 84398 states have (on average 1.5126187824356028) internal successors, (127662), 84398 states have internal predecessors, (127662), 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 06:21:48,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84402 states to 84402 states and 127665 transitions. [2023-04-02 06:21:48,526 INFO L78 Accepts]: Start accepts. Automaton has 84402 states and 127665 transitions. Word has length 85 [2023-04-02 06:21:48,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:21:48,526 INFO L495 AbstractCegarLoop]: Abstraction has 84402 states and 127665 transitions. [2023-04-02 06:21:48,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:21:48,527 INFO L276 IsEmpty]: Start isEmpty. Operand 84402 states and 127665 transitions. [2023-04-02 06:21:48,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-02 06:21:48,528 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:21:48,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:21:48,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:21:48,528 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:21:48,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:21:48,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1071799842, now seen corresponding path program 1 times [2023-04-02 06:21:48,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:21:48,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934743186] [2023-04-02 06:21:48,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:21:48,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:21:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:48,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:21:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:48,994 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 06:21:48,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:21:48,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934743186] [2023-04-02 06:21:48,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934743186] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:21:48,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:21:48,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:21:48,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604233935] [2023-04-02 06:21:48,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:21:48,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:21:48,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:21:48,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:21:48,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:21:48,996 INFO L87 Difference]: Start difference. First operand 84402 states and 127665 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 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 06:22:13,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:13,500 INFO L93 Difference]: Finished difference Result 171828 states and 258354 transitions. [2023-04-02 06:22:13,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:22:13,501 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 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 85 [2023-04-02 06:22:13,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:14,001 INFO L225 Difference]: With dead ends: 171828 [2023-04-02 06:22:14,002 INFO L226 Difference]: Without dead ends: 171826 [2023-04-02 06:22:14,270 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 06:22:14,273 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 348 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:14,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 1108 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:22:14,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171826 states. [2023-04-02 06:22:28,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171826 to 87474. [2023-04-02 06:22:28,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87474 states, 87470 states have (on average 1.4946152966731452) internal successors, (130734), 87470 states have internal predecessors, (130734), 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 06:22:28,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87474 states to 87474 states and 130737 transitions. [2023-04-02 06:22:28,828 INFO L78 Accepts]: Start accepts. Automaton has 87474 states and 130737 transitions. Word has length 85 [2023-04-02 06:22:28,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:28,828 INFO L495 AbstractCegarLoop]: Abstraction has 87474 states and 130737 transitions. [2023-04-02 06:22:28,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 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 06:22:28,829 INFO L276 IsEmpty]: Start isEmpty. Operand 87474 states and 130737 transitions. [2023-04-02 06:22:28,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-02 06:22:28,832 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:28,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:22:28,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:22:28,832 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:22:28,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:28,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1143563088, now seen corresponding path program 1 times [2023-04-02 06:22:28,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:28,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079080959] [2023-04-02 06:22:28,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:28,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:29,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:29,101 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 06:22:29,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:29,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079080959] [2023-04-02 06:22:29,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079080959] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:29,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:29,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:22:29,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830443869] [2023-04-02 06:22:29,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:29,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:22:29,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:29,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:22:29,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:22:29,103 INFO L87 Difference]: Start difference. First operand 87474 states and 130737 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:49,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:49,959 INFO L93 Difference]: Finished difference Result 214904 states and 321061 transitions. [2023-04-02 06:22:49,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:22:49,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 86 [2023-04-02 06:22:49,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:50,307 INFO L225 Difference]: With dead ends: 214904 [2023-04-02 06:22:50,308 INFO L226 Difference]: Without dead ends: 127478 [2023-04-02 06:22:50,401 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 06:22:50,402 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 136 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:50,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 400 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:22:50,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127478 states. [2023-04-02 06:23:10,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127478 to 126772. [2023-04-02 06:23:10,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126772 states, 126768 states have (on average 1.4850435441120788) internal successors, (188256), 126768 states have internal predecessors, (188256), 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 06:23:10,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126772 states to 126772 states and 188259 transitions. [2023-04-02 06:23:10,832 INFO L78 Accepts]: Start accepts. Automaton has 126772 states and 188259 transitions. Word has length 86 [2023-04-02 06:23:10,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:23:10,832 INFO L495 AbstractCegarLoop]: Abstraction has 126772 states and 188259 transitions. [2023-04-02 06:23:10,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:23:10,832 INFO L276 IsEmpty]: Start isEmpty. Operand 126772 states and 188259 transitions. [2023-04-02 06:23:10,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-02 06:23:10,877 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:23:10,877 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:10,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:23:10,878 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:23:10,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:23:10,878 INFO L85 PathProgramCache]: Analyzing trace with hash 273843619, now seen corresponding path program 1 times [2023-04-02 06:23:10,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:23:10,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983868594] [2023-04-02 06:23:10,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:23:10,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:23:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:23:11,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:23:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:23:11,518 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-02 06:23:11,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:23:11,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983868594] [2023-04-02 06:23:11,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983868594] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:23:11,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:23:11,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:23:11,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956633085] [2023-04-02 06:23:11,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:23:11,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:23:11,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:23:11,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:23:11,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:23:11,521 INFO L87 Difference]: Start difference. First operand 126772 states and 188259 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:23:57,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:23:57,861 INFO L93 Difference]: Finished difference Result 335586 states and 502778 transitions. [2023-04-02 06:23:57,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:23:57,862 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 116 [2023-04-02 06:23:57,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:23:58,692 INFO L225 Difference]: With dead ends: 335586 [2023-04-02 06:23:58,693 INFO L226 Difference]: Without dead ends: 280064 [2023-04-02 06:23:58,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:23:58,812 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 2219 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2219 SdHoareTripleChecker+Valid, 2059 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:23:58,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2219 Valid, 2059 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:23:59,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280064 states.