./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e88e261bdd8209c6645351b9246697a266f2a89be3660180d29cb5cfb2f2528f --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 07:38:51,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 07:38:51,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 07:38:51,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 07:38:51,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 07:38:51,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 07:38:51,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 07:38:51,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 07:38:51,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 07:38:51,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 07:38:51,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 07:38:51,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 07:38:51,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 07:38:51,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 07:38:51,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 07:38:51,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 07:38:51,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 07:38:51,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 07:38:51,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 07:38:51,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 07:38:51,519 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 07:38:51,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 07:38:51,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 07:38:51,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 07:38:51,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 07:38:51,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 07:38:51,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 07:38:51,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 07:38:51,527 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 07:38:51,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 07:38:51,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 07:38:51,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 07:38:51,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 07:38:51,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 07:38:51,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 07:38:51,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 07:38:51,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 07:38:51,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 07:38:51,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 07:38:51,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 07:38:51,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 07:38:51,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 07:38:51,535 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 07:38:51,554 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 07:38:51,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 07:38:51,555 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 07:38:51,556 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 07:38:51,556 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 07:38:51,557 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 07:38:51,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 07:38:51,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 07:38:51,558 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 07:38:51,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 07:38:51,558 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 07:38:51,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 07:38:51,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 07:38:51,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 07:38:51,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 07:38:51,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 07:38:51,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 07:38:51,561 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 07:38:51,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 07:38:51,562 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 07:38:51,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 07:38:51,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 07:38:51,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 07:38:51,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 07:38:51,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:38:51,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 07:38:51,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 07:38:51,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 07:38:51,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 07:38:51,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 07:38:51,566 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 07:38:51,566 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 07:38:51,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 07:38:51,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e88e261bdd8209c6645351b9246697a266f2a89be3660180d29cb5cfb2f2528f [2022-07-12 07:38:51,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 07:38:51,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 07:38:51,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 07:38:51,836 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 07:38:51,836 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 07:38:51,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-07-12 07:38:51,891 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74eeef0c0/f4d20e6bc0674a18a278d27ba12af037/FLAG15301802d [2022-07-12 07:38:52,502 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 07:38:52,503 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-07-12 07:38:52,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74eeef0c0/f4d20e6bc0674a18a278d27ba12af037/FLAG15301802d [2022-07-12 07:38:52,874 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74eeef0c0/f4d20e6bc0674a18a278d27ba12af037 [2022-07-12 07:38:52,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 07:38:52,881 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 07:38:52,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 07:38:52,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 07:38:52,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 07:38:52,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:38:52" (1/1) ... [2022-07-12 07:38:52,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7661bf8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:38:52, skipping insertion in model container [2022-07-12 07:38:52,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:38:52" (1/1) ... [2022-07-12 07:38:52,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 07:38:52,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 07:38:53,278 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[22673,22686] [2022-07-12 07:38:53,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:38:53,465 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 07:38:53,663 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[22673,22686] [2022-07-12 07:38:53,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:38:53,789 INFO L208 MainTranslator]: Completed translation [2022-07-12 07:38:53,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:38:53 WrapperNode [2022-07-12 07:38:53,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 07:38:53,792 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 07:38:53,792 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 07:38:53,792 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 07:38:53,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:38:53" (1/1) ... [2022-07-12 07:38:53,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:38:53" (1/1) ... [2022-07-12 07:38:53,948 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2818 [2022-07-12 07:38:53,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 07:38:53,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 07:38:53,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 07:38:53,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 07:38:53,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:38:53" (1/1) ... [2022-07-12 07:38:53,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:38:53" (1/1) ... [2022-07-12 07:38:53,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:38:53" (1/1) ... [2022-07-12 07:38:53,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:38:53" (1/1) ... [2022-07-12 07:38:54,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:38:53" (1/1) ... [2022-07-12 07:38:54,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:38:53" (1/1) ... [2022-07-12 07:38:54,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:38:53" (1/1) ... [2022-07-12 07:38:54,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 07:38:54,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 07:38:54,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 07:38:54,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 07:38:54,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:38:53" (1/1) ... [2022-07-12 07:38:54,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:38:54,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:38:54,107 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) [2022-07-12 07:38:54,122 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 [2022-07-12 07:38:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 07:38:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 07:38:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 07:38:54,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 07:38:54,382 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 07:38:54,401 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 07:38:55,902 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 07:38:55,916 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 07:38:55,916 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 07:38:55,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:38:55 BoogieIcfgContainer [2022-07-12 07:38:55,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 07:38:55,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 07:38:55,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 07:38:55,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 07:38:55,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 07:38:52" (1/3) ... [2022-07-12 07:38:55,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5205516e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:38:55, skipping insertion in model container [2022-07-12 07:38:55,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:38:53" (2/3) ... [2022-07-12 07:38:55,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5205516e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:38:55, skipping insertion in model container [2022-07-12 07:38:55,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:38:55" (3/3) ... [2022-07-12 07:38:55,928 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-07-12 07:38:55,941 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 07:38:55,942 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 07:38:56,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 07:38:56,035 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6b728c32, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@63794413 [2022-07-12 07:38:56,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 07:38:56,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 750 states, 748 states have (on average 1.8328877005347595) internal successors, (1371), 749 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:38:56,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-12 07:38:56,066 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:38:56,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:38:56,068 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:38:56,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:38:56,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1759621140, now seen corresponding path program 1 times [2022-07-12 07:38:56,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:38:56,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048802727] [2022-07-12 07:38:56,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:38:56,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:38:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:38:56,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:38:56,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:38:56,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048802727] [2022-07-12 07:38:56,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048802727] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:38:56,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:38:56,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:38:56,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572287115] [2022-07-12 07:38:56,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:38:56,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:38:56,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:38:56,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:38:56,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:38:56,711 INFO L87 Difference]: Start difference. First operand has 750 states, 748 states have (on average 1.8328877005347595) internal successors, (1371), 749 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:38:56,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:38:56,847 INFO L93 Difference]: Finished difference Result 1180 states and 2099 transitions. [2022-07-12 07:38:56,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:38:56,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2022-07-12 07:38:56,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:38:56,869 INFO L225 Difference]: With dead ends: 1180 [2022-07-12 07:38:56,869 INFO L226 Difference]: Without dead ends: 952 [2022-07-12 07:38:56,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:38:56,876 INFO L413 NwaCegarLoop]: 1367 mSDtfsCounter, 372 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 2660 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:38:56,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 2660 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:38:56,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2022-07-12 07:38:56,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 950. [2022-07-12 07:38:56,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 949 states have (on average 1.7513171759747101) internal successors, (1662), 949 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:38:56,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1662 transitions. [2022-07-12 07:38:56,979 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1662 transitions. Word has length 193 [2022-07-12 07:38:56,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:38:56,980 INFO L495 AbstractCegarLoop]: Abstraction has 950 states and 1662 transitions. [2022-07-12 07:38:56,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:38:56,981 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1662 transitions. [2022-07-12 07:38:56,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-07-12 07:38:56,988 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:38:56,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:38:56,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 07:38:56,989 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:38:56,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:38:56,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1458857433, now seen corresponding path program 1 times [2022-07-12 07:38:56,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:38:56,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250692056] [2022-07-12 07:38:56,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:38:56,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:38:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:38:57,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:38:57,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:38:57,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250692056] [2022-07-12 07:38:57,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250692056] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:38:57,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:38:57,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:38:57,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325176814] [2022-07-12 07:38:57,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:38:57,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:38:57,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:38:57,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:38:57,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:38:57,170 INFO L87 Difference]: Start difference. First operand 950 states and 1662 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:38:57,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:38:57,251 INFO L93 Difference]: Finished difference Result 1770 states and 3046 transitions. [2022-07-12 07:38:57,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:38:57,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2022-07-12 07:38:57,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:38:57,264 INFO L225 Difference]: With dead ends: 1770 [2022-07-12 07:38:57,264 INFO L226 Difference]: Without dead ends: 1348 [2022-07-12 07:38:57,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:38:57,267 INFO L413 NwaCegarLoop]: 1319 mSDtfsCounter, 339 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:38:57,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 2603 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:38:57,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2022-07-12 07:38:57,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1346. [2022-07-12 07:38:57,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 1.7315985130111524) internal successors, (2329), 1345 states have internal predecessors, (2329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:38:57,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 2329 transitions. [2022-07-12 07:38:57,345 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 2329 transitions. Word has length 197 [2022-07-12 07:38:57,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:38:57,347 INFO L495 AbstractCegarLoop]: Abstraction has 1346 states and 2329 transitions. [2022-07-12 07:38:57,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:38:57,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 2329 transitions. [2022-07-12 07:38:57,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-07-12 07:38:57,356 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:38:57,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:38:57,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 07:38:57,357 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:38:57,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:38:57,358 INFO L85 PathProgramCache]: Analyzing trace with hash -308666722, now seen corresponding path program 1 times [2022-07-12 07:38:57,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:38:57,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874247239] [2022-07-12 07:38:57,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:38:57,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:38:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:38:57,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:38:57,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:38:57,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874247239] [2022-07-12 07:38:57,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874247239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:38:57,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:38:57,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:38:57,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505156865] [2022-07-12 07:38:57,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:38:57,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:38:57,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:38:57,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:38:57,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:38:57,551 INFO L87 Difference]: Start difference. First operand 1346 states and 2329 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:38:57,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:38:57,627 INFO L93 Difference]: Finished difference Result 2934 states and 5003 transitions. [2022-07-12 07:38:57,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:38:57,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2022-07-12 07:38:57,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:38:57,639 INFO L225 Difference]: With dead ends: 2934 [2022-07-12 07:38:57,639 INFO L226 Difference]: Without dead ends: 2116 [2022-07-12 07:38:57,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:38:57,648 INFO L413 NwaCegarLoop]: 1319 mSDtfsCounter, 331 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:38:57,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 2604 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:38:57,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2022-07-12 07:38:57,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 2114. [2022-07-12 07:38:57,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2114 states, 2113 states have (on average 1.7117841930903928) internal successors, (3617), 2113 states have internal predecessors, (3617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:38:57,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3617 transitions. [2022-07-12 07:38:57,730 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3617 transitions. Word has length 201 [2022-07-12 07:38:57,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:38:57,731 INFO L495 AbstractCegarLoop]: Abstraction has 2114 states and 3617 transitions. [2022-07-12 07:38:57,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:38:57,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3617 transitions. [2022-07-12 07:38:57,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-12 07:38:57,735 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:38:57,735 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:38:57,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 07:38:57,736 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:38:57,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:38:57,737 INFO L85 PathProgramCache]: Analyzing trace with hash 422688099, now seen corresponding path program 1 times [2022-07-12 07:38:57,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:38:57,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104608346] [2022-07-12 07:38:57,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:38:57,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:38:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:38:57,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:38:57,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:38:57,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104608346] [2022-07-12 07:38:57,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104608346] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:38:57,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:38:57,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:38:57,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403482709] [2022-07-12 07:38:57,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:38:57,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:38:57,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:38:57,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:38:57,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:38:57,885 INFO L87 Difference]: Start difference. First operand 2114 states and 3617 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:38:57,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:38:57,987 INFO L93 Difference]: Finished difference Result 5190 states and 8779 transitions. [2022-07-12 07:38:57,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:38:57,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2022-07-12 07:38:57,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:38:58,002 INFO L225 Difference]: With dead ends: 5190 [2022-07-12 07:38:58,003 INFO L226 Difference]: Without dead ends: 3604 [2022-07-12 07:38:58,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:38:58,016 INFO L413 NwaCegarLoop]: 1319 mSDtfsCounter, 323 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:38:58,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 2605 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:38:58,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3604 states. [2022-07-12 07:38:58,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3604 to 3602. [2022-07-12 07:38:58,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3602 states, 3601 states have (on average 1.6942515967786727) internal successors, (6101), 3601 states have internal predecessors, (6101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:38:58,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3602 states to 3602 states and 6101 transitions. [2022-07-12 07:38:58,198 INFO L78 Accepts]: Start accepts. Automaton has 3602 states and 6101 transitions. Word has length 205 [2022-07-12 07:38:58,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:38:58,198 INFO L495 AbstractCegarLoop]: Abstraction has 3602 states and 6101 transitions. [2022-07-12 07:38:58,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:38:58,199 INFO L276 IsEmpty]: Start isEmpty. Operand 3602 states and 6101 transitions. [2022-07-12 07:38:58,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-07-12 07:38:58,203 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:38:58,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:38:58,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 07:38:58,204 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:38:58,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:38:58,205 INFO L85 PathProgramCache]: Analyzing trace with hash 245335336, now seen corresponding path program 1 times [2022-07-12 07:38:58,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:38:58,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140073585] [2022-07-12 07:38:58,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:38:58,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:38:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:38:58,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:38:58,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:38:58,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140073585] [2022-07-12 07:38:58,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140073585] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:38:58,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:38:58,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:38:58,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313072433] [2022-07-12 07:38:58,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:38:58,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:38:58,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:38:58,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:38:58,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:38:58,308 INFO L87 Difference]: Start difference. First operand 3602 states and 6101 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:38:58,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:38:58,545 INFO L93 Difference]: Finished difference Result 9558 states and 16055 transitions. [2022-07-12 07:38:58,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:38:58,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2022-07-12 07:38:58,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:38:58,571 INFO L225 Difference]: With dead ends: 9558 [2022-07-12 07:38:58,571 INFO L226 Difference]: Without dead ends: 6484 [2022-07-12 07:38:58,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:38:58,578 INFO L413 NwaCegarLoop]: 1319 mSDtfsCounter, 315 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:38:58,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 2606 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:38:58,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6484 states. [2022-07-12 07:38:58,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6484 to 6482. [2022-07-12 07:38:58,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6482 states, 6481 states have (on average 1.6795247646968061) internal successors, (10885), 6481 states have internal predecessors, (10885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:38:58,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6482 states to 6482 states and 10885 transitions. [2022-07-12 07:38:58,857 INFO L78 Accepts]: Start accepts. Automaton has 6482 states and 10885 transitions. Word has length 209 [2022-07-12 07:38:58,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:38:58,858 INFO L495 AbstractCegarLoop]: Abstraction has 6482 states and 10885 transitions. [2022-07-12 07:38:58,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:38:58,861 INFO L276 IsEmpty]: Start isEmpty. Operand 6482 states and 10885 transitions. [2022-07-12 07:38:58,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-07-12 07:38:58,867 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:38:58,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:38:58,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 07:38:58,868 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:38:58,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:38:58,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1489856749, now seen corresponding path program 1 times [2022-07-12 07:38:58,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:38:58,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505651504] [2022-07-12 07:38:58,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:38:58,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:38:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:38:59,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:38:59,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:38:59,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505651504] [2022-07-12 07:38:59,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505651504] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:38:59,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:38:59,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 07:38:59,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389218656] [2022-07-12 07:38:59,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:38:59,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 07:38:59,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:38:59,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 07:38:59,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:38:59,047 INFO L87 Difference]: Start difference. First operand 6482 states and 10885 transitions. Second operand has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:39:01,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:39:01,013 INFO L93 Difference]: Finished difference Result 40006 states and 67167 transitions. [2022-07-12 07:39:01,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 07:39:01,013 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2022-07-12 07:39:01,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:39:01,142 INFO L225 Difference]: With dead ends: 40006 [2022-07-12 07:39:01,142 INFO L226 Difference]: Without dead ends: 34052 [2022-07-12 07:39:01,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-12 07:39:01,172 INFO L413 NwaCegarLoop]: 1309 mSDtfsCounter, 4630 mSDsluCounter, 10022 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4630 SdHoareTripleChecker+Valid, 11331 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:39:01,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4630 Valid, 11331 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:39:01,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34052 states. [2022-07-12 07:39:02,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34052 to 12219. [2022-07-12 07:39:02,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12219 states, 12218 states have (on average 1.6736781797348175) internal successors, (20449), 12218 states have internal predecessors, (20449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:39:02,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12219 states to 12219 states and 20449 transitions. [2022-07-12 07:39:02,400 INFO L78 Accepts]: Start accepts. Automaton has 12219 states and 20449 transitions. Word has length 213 [2022-07-12 07:39:02,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:39:02,400 INFO L495 AbstractCegarLoop]: Abstraction has 12219 states and 20449 transitions. [2022-07-12 07:39:02,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:39:02,401 INFO L276 IsEmpty]: Start isEmpty. Operand 12219 states and 20449 transitions. [2022-07-12 07:39:02,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-12 07:39:02,409 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:39:02,410 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:39:02,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 07:39:02,410 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:39:02,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:39:02,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1130700822, now seen corresponding path program 1 times [2022-07-12 07:39:02,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:39:02,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028541793] [2022-07-12 07:39:02,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:39:02,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:39:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:39:02,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:39:02,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:39:02,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028541793] [2022-07-12 07:39:02,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028541793] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:39:02,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:39:02,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:39:02,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024851337] [2022-07-12 07:39:02,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:39:02,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 07:39:02,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:39:02,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 07:39:02,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 07:39:02,514 INFO L87 Difference]: Start difference. First operand 12219 states and 20449 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:39:03,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:39:03,821 INFO L93 Difference]: Finished difference Result 35928 states and 60192 transitions. [2022-07-12 07:39:03,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 07:39:03,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 214 [2022-07-12 07:39:03,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:39:03,891 INFO L225 Difference]: With dead ends: 35928 [2022-07-12 07:39:03,891 INFO L226 Difference]: Without dead ends: 24237 [2022-07-12 07:39:03,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:39:03,917 INFO L413 NwaCegarLoop]: 1312 mSDtfsCounter, 1087 mSDsluCounter, 2936 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 4248 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:39:03,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 4248 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:39:03,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24237 states. [2022-07-12 07:39:05,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24237 to 18195. [2022-07-12 07:39:05,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18195 states, 18194 states have (on average 1.6733538529185445) internal successors, (30445), 18194 states have internal predecessors, (30445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:39:05,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18195 states to 18195 states and 30445 transitions. [2022-07-12 07:39:05,218 INFO L78 Accepts]: Start accepts. Automaton has 18195 states and 30445 transitions. Word has length 214 [2022-07-12 07:39:05,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:39:05,218 INFO L495 AbstractCegarLoop]: Abstraction has 18195 states and 30445 transitions. [2022-07-12 07:39:05,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:39:05,219 INFO L276 IsEmpty]: Start isEmpty. Operand 18195 states and 30445 transitions. [2022-07-12 07:39:05,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-12 07:39:05,231 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:39:05,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:39:05,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 07:39:05,232 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:39:05,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:39:05,232 INFO L85 PathProgramCache]: Analyzing trace with hash 534456548, now seen corresponding path program 1 times [2022-07-12 07:39:05,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:39:05,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376324213] [2022-07-12 07:39:05,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:39:05,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:39:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:39:05,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:39:05,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:39:05,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376324213] [2022-07-12 07:39:05,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376324213] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:39:05,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:39:05,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:39:05,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380105196] [2022-07-12 07:39:05,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:39:05,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:39:05,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:39:05,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:39:05,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:39:05,342 INFO L87 Difference]: Start difference. First operand 18195 states and 30445 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:39:06,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:39:06,592 INFO L93 Difference]: Finished difference Result 35159 states and 58816 transitions. [2022-07-12 07:39:06,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:39:06,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2022-07-12 07:39:06,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:39:06,672 INFO L225 Difference]: With dead ends: 35159 [2022-07-12 07:39:06,672 INFO L226 Difference]: Without dead ends: 25877 [2022-07-12 07:39:06,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:39:06,701 INFO L413 NwaCegarLoop]: 1491 mSDtfsCounter, 332 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2755 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:39:06,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 2755 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:39:06,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25877 states. [2022-07-12 07:39:08,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25877 to 25875. [2022-07-12 07:39:08,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25875 states, 25874 states have (on average 1.6694751487980213) internal successors, (43196), 25874 states have internal predecessors, (43196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:39:08,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25875 states to 25875 states and 43196 transitions. [2022-07-12 07:39:08,351 INFO L78 Accepts]: Start accepts. Automaton has 25875 states and 43196 transitions. Word has length 215 [2022-07-12 07:39:08,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:39:08,352 INFO L495 AbstractCegarLoop]: Abstraction has 25875 states and 43196 transitions. [2022-07-12 07:39:08,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:39:08,353 INFO L276 IsEmpty]: Start isEmpty. Operand 25875 states and 43196 transitions. [2022-07-12 07:39:08,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-12 07:39:08,360 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:39:08,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:39:08,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 07:39:08,361 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:39:08,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:39:08,362 INFO L85 PathProgramCache]: Analyzing trace with hash -759048876, now seen corresponding path program 1 times [2022-07-12 07:39:08,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:39:08,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052997879] [2022-07-12 07:39:08,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:39:08,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:39:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:39:08,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:39:08,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:39:08,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052997879] [2022-07-12 07:39:08,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052997879] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:39:08,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:39:08,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:39:08,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409457842] [2022-07-12 07:39:08,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:39:08,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 07:39:08,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:39:08,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 07:39:08,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 07:39:08,489 INFO L87 Difference]: Start difference. First operand 25875 states and 43196 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:39:11,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:39:11,314 INFO L93 Difference]: Finished difference Result 76635 states and 128034 transitions. [2022-07-12 07:39:11,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 07:39:11,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2022-07-12 07:39:11,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:39:11,428 INFO L225 Difference]: With dead ends: 76635 [2022-07-12 07:39:11,429 INFO L226 Difference]: Without dead ends: 51512 [2022-07-12 07:39:11,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:39:11,485 INFO L413 NwaCegarLoop]: 1333 mSDtfsCounter, 1085 mSDsluCounter, 2742 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 4075 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:39:11,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 4075 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:39:11,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51512 states. [2022-07-12 07:39:14,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51512 to 38626. [2022-07-12 07:39:14,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38626 states, 38625 states have (on average 1.66715857605178) internal successors, (64394), 38625 states have internal predecessors, (64394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:39:14,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38626 states to 38626 states and 64394 transitions. [2022-07-12 07:39:14,380 INFO L78 Accepts]: Start accepts. Automaton has 38626 states and 64394 transitions. Word has length 215 [2022-07-12 07:39:14,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:39:14,384 INFO L495 AbstractCegarLoop]: Abstraction has 38626 states and 64394 transitions. [2022-07-12 07:39:14,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:39:14,385 INFO L276 IsEmpty]: Start isEmpty. Operand 38626 states and 64394 transitions. [2022-07-12 07:39:14,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-12 07:39:14,396 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:39:14,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:39:14,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 07:39:14,397 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:39:14,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:39:14,398 INFO L85 PathProgramCache]: Analyzing trace with hash -296680176, now seen corresponding path program 1 times [2022-07-12 07:39:14,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:39:14,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964070272] [2022-07-12 07:39:14,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:39:14,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:39:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:39:14,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:39:14,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:39:14,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964070272] [2022-07-12 07:39:14,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964070272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:39:14,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:39:14,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:39:14,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898880661] [2022-07-12 07:39:14,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:39:14,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:39:14,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:39:14,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:39:14,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:39:14,517 INFO L87 Difference]: Start difference. First operand 38626 states and 64394 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:39:18,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:39:18,086 INFO L93 Difference]: Finished difference Result 75334 states and 125638 transitions. [2022-07-12 07:39:18,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:39:18,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2022-07-12 07:39:18,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:39:18,188 INFO L225 Difference]: With dead ends: 75334 [2022-07-12 07:39:18,189 INFO L226 Difference]: Without dead ends: 55424 [2022-07-12 07:39:18,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:39:18,222 INFO L413 NwaCegarLoop]: 1380 mSDtfsCounter, 316 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2646 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:39:18,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 2646 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:39:18,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55424 states. [2022-07-12 07:39:22,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55424 to 55422. [2022-07-12 07:39:22,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55422 states, 55421 states have (on average 1.6632323487486693) internal successors, (92178), 55421 states have internal predecessors, (92178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:39:22,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55422 states to 55422 states and 92178 transitions. [2022-07-12 07:39:22,362 INFO L78 Accepts]: Start accepts. Automaton has 55422 states and 92178 transitions. Word has length 215 [2022-07-12 07:39:22,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:39:22,362 INFO L495 AbstractCegarLoop]: Abstraction has 55422 states and 92178 transitions. [2022-07-12 07:39:22,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:39:22,363 INFO L276 IsEmpty]: Start isEmpty. Operand 55422 states and 92178 transitions. [2022-07-12 07:39:22,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-12 07:39:22,375 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:39:22,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:39:22,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 07:39:22,376 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:39:22,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:39:22,376 INFO L85 PathProgramCache]: Analyzing trace with hash -920100294, now seen corresponding path program 1 times [2022-07-12 07:39:22,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:39:22,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324015904] [2022-07-12 07:39:22,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:39:22,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:39:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:39:22,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:39:22,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:39:22,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324015904] [2022-07-12 07:39:22,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324015904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:39:22,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:39:22,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:39:22,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054732528] [2022-07-12 07:39:22,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:39:22,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:39:22,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:39:22,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:39:22,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:39:22,486 INFO L87 Difference]: Start difference. First operand 55422 states and 92178 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:39:27,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:39:27,011 INFO L93 Difference]: Finished difference Result 105538 states and 175718 transitions. [2022-07-12 07:39:27,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:39:27,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2022-07-12 07:39:27,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:39:27,154 INFO L225 Difference]: With dead ends: 105538 [2022-07-12 07:39:27,154 INFO L226 Difference]: Without dead ends: 77194 [2022-07-12 07:39:27,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:39:27,195 INFO L413 NwaCegarLoop]: 1447 mSDtfsCounter, 324 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 2712 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:39:27,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 2712 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:39:27,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77194 states.