./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/pals_floodmax.3.3.ufo.UNBOUNDED.pals.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 b7a355896b8b65b5a2cb80c69f28000f566073d33b0003da7d28a637c6d5db6a --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:20:57,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:20:57,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:20:57,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:20:57,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:20:57,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:20:57,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:20:57,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:20:57,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:20:57,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:20:57,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:20:57,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:20:57,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:20:57,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:20:57,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:20:57,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:20:57,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:20:57,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:20:57,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:20:57,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:20:57,701 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:20:57,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:20:57,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:20:57,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:20:57,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:20:57,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:20:57,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:20:57,711 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:20:57,712 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:20:57,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:20:57,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:20:57,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:20:57,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:20:57,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:20:57,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:20:57,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:20:57,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:20:57,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:20:57,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:20:57,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:20:57,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:20:57,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:20:57,737 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:20:57,784 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:20:57,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:20:57,785 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:20:57,785 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:20:57,786 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:20:57,786 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:20:57,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:20:57,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:20:57,787 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:20:57,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:20:57,788 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:20:57,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:20:57,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:20:57,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:20:57,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:20:57,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:20:57,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:20:57,790 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:20:57,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:20:57,791 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:20:57,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:20:57,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:20:57,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:20:57,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:20:57,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:20:57,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:20:57,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:20:57,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:20:57,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:20:57,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:20:57,794 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:20:57,794 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:20:57,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:20:57,794 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7a355896b8b65b5a2cb80c69f28000f566073d33b0003da7d28a637c6d5db6a [2022-07-13 18:20:58,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:20:58,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:20:58,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:20:58,171 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:20:58,172 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:20:58,173 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c [2022-07-13 18:20:58,282 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28413d5aa/16f26ac189ab4858afd0d7d0008f920b/FLAG394c83ffd [2022-07-13 18:20:58,882 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:20:58,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c [2022-07-13 18:20:58,927 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28413d5aa/16f26ac189ab4858afd0d7d0008f920b/FLAG394c83ffd [2022-07-13 18:20:59,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28413d5aa/16f26ac189ab4858afd0d7d0008f920b [2022-07-13 18:20:59,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:20:59,206 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:20:59,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:20:59,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:20:59,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:20:59,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:20:59" (1/1) ... [2022-07-13 18:20:59,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f28b974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:20:59, skipping insertion in model container [2022-07-13 18:20:59,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:20:59" (1/1) ... [2022-07-13 18:20:59,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:20:59,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:20:59,694 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/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c[12968,12981] [2022-07-13 18:20:59,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:20:59,722 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:20:59,806 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/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c[12968,12981] [2022-07-13 18:20:59,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:20:59,825 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:20:59,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:20:59 WrapperNode [2022-07-13 18:20:59,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:20:59,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:20:59,828 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:20:59,828 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:20:59,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:20:59" (1/1) ... [2022-07-13 18:20:59,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:20:59" (1/1) ... [2022-07-13 18:20:59,926 INFO L137 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 443 [2022-07-13 18:20:59,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:20:59,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:20:59,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:20:59,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:20:59,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:20:59" (1/1) ... [2022-07-13 18:20:59,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:20:59" (1/1) ... [2022-07-13 18:20:59,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:20:59" (1/1) ... [2022-07-13 18:20:59,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:20:59" (1/1) ... [2022-07-13 18:20:59,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:20:59" (1/1) ... [2022-07-13 18:20:59,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:20:59" (1/1) ... [2022-07-13 18:20:59,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:20:59" (1/1) ... [2022-07-13 18:20:59,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:20:59,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:21:00,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:21:00,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:21:00,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:20:59" (1/1) ... [2022-07-13 18:21:00,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:21:00,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:21:00,041 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) [2022-07-13 18:21:00,064 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 [2022-07-13 18:21:00,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:21:00,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:21:00,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:21:00,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:21:00,276 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:21:00,277 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:21:00,728 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:21:00,741 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:21:00,741 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 18:21:00,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:21:00 BoogieIcfgContainer [2022-07-13 18:21:00,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:21:00,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:21:00,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:21:00,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:21:00,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:20:59" (1/3) ... [2022-07-13 18:21:00,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651554fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:21:00, skipping insertion in model container [2022-07-13 18:21:00,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:20:59" (2/3) ... [2022-07-13 18:21:00,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651554fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:21:00, skipping insertion in model container [2022-07-13 18:21:00,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:21:00" (3/3) ... [2022-07-13 18:21:00,754 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.UNBOUNDED.pals.c [2022-07-13 18:21:00,769 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:21:00,769 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:21:00,819 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:21:00,834 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@93d5a2c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@230867d1 [2022-07-13 18:21:00,847 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:21:00,852 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 135 states have (on average 1.7481481481481482) internal successors, (236), 136 states have internal predecessors, (236), 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) [2022-07-13 18:21:00,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-13 18:21:00,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:00,869 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] [2022-07-13 18:21:00,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:00,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:00,877 INFO L85 PathProgramCache]: Analyzing trace with hash 298975739, now seen corresponding path program 1 times [2022-07-13 18:21:00,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:00,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996938509] [2022-07-13 18:21:00,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:00,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:01,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:21:01,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:01,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996938509] [2022-07-13 18:21:01,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996938509] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:21:01,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:21:01,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 18:21:01,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076377103] [2022-07-13 18:21:01,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:21:01,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 18:21:01,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:01,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 18:21:01,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 18:21:01,300 INFO L87 Difference]: Start difference. First operand has 137 states, 135 states have (on average 1.7481481481481482) internal successors, (236), 136 states have internal predecessors, (236), 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 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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) [2022-07-13 18:21:01,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:01,340 INFO L93 Difference]: Finished difference Result 214 states and 367 transitions. [2022-07-13 18:21:01,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 18:21:01,342 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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 37 [2022-07-13 18:21:01,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:01,354 INFO L225 Difference]: With dead ends: 214 [2022-07-13 18:21:01,354 INFO L226 Difference]: Without dead ends: 133 [2022-07-13 18:21:01,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 18:21:01,362 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:01,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:21:01,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-07-13 18:21:01,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-07-13 18:21:01,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.7348484848484849) internal successors, (229), 132 states have internal predecessors, (229), 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) [2022-07-13 18:21:01,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 229 transitions. [2022-07-13 18:21:01,413 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 229 transitions. Word has length 37 [2022-07-13 18:21:01,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:01,414 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 229 transitions. [2022-07-13 18:21:01,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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) [2022-07-13 18:21:01,415 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 229 transitions. [2022-07-13 18:21:01,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-13 18:21:01,417 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:01,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:21:01,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 18:21:01,418 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:01,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:01,420 INFO L85 PathProgramCache]: Analyzing trace with hash -518672711, now seen corresponding path program 1 times [2022-07-13 18:21:01,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:01,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782246614] [2022-07-13 18:21:01,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:01,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:01,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:21:01,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:01,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782246614] [2022-07-13 18:21:01,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782246614] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:21:01,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:21:01,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:21:01,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257780079] [2022-07-13 18:21:01,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:21:01,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:21:01,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:01,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:21:01,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:21:01,594 INFO L87 Difference]: Start difference. First operand 133 states and 229 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2022-07-13 18:21:01,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:01,695 INFO L93 Difference]: Finished difference Result 213 states and 360 transitions. [2022-07-13 18:21:01,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:21:01,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 37 [2022-07-13 18:21:01,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:01,704 INFO L225 Difference]: With dead ends: 213 [2022-07-13 18:21:01,704 INFO L226 Difference]: Without dead ends: 133 [2022-07-13 18:21:01,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:21:01,710 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 3 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:01,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 878 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:21:01,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-07-13 18:21:01,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-07-13 18:21:01,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.5303030303030303) internal successors, (202), 132 states have internal predecessors, (202), 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) [2022-07-13 18:21:01,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 202 transitions. [2022-07-13 18:21:01,721 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 202 transitions. Word has length 37 [2022-07-13 18:21:01,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:01,721 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 202 transitions. [2022-07-13 18:21:01,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2022-07-13 18:21:01,721 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 202 transitions. [2022-07-13 18:21:01,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-13 18:21:01,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:01,723 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] [2022-07-13 18:21:01,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 18:21:01,723 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:01,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:01,724 INFO L85 PathProgramCache]: Analyzing trace with hash -707453694, now seen corresponding path program 1 times [2022-07-13 18:21:01,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:01,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023836701] [2022-07-13 18:21:01,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:01,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:01,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:21:01,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:01,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023836701] [2022-07-13 18:21:01,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023836701] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:21:01,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:21:01,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:21:01,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471497194] [2022-07-13 18:21:01,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:21:01,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:21:01,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:01,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:21:01,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:21:01,876 INFO L87 Difference]: Start difference. First operand 133 states and 202 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-07-13 18:21:02,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:02,099 INFO L93 Difference]: Finished difference Result 276 states and 439 transitions. [2022-07-13 18:21:02,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:21:02,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2022-07-13 18:21:02,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:02,101 INFO L225 Difference]: With dead ends: 276 [2022-07-13 18:21:02,101 INFO L226 Difference]: Without dead ends: 200 [2022-07-13 18:21:02,102 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 [2022-07-13 18:21:02,103 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 101 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:02,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 355 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:21:02,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-07-13 18:21:02,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 197. [2022-07-13 18:21:02,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.5510204081632653) internal successors, (304), 196 states have internal predecessors, (304), 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) [2022-07-13 18:21:02,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 304 transitions. [2022-07-13 18:21:02,134 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 304 transitions. Word has length 63 [2022-07-13 18:21:02,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:02,134 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 304 transitions. [2022-07-13 18:21:02,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-07-13 18:21:02,134 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 304 transitions. [2022-07-13 18:21:02,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 18:21:02,153 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:02,153 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] [2022-07-13 18:21:02,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 18:21:02,154 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:02,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:02,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1995563601, now seen corresponding path program 1 times [2022-07-13 18:21:02,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:02,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605071380] [2022-07-13 18:21:02,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:02,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:02,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:21:02,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:02,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605071380] [2022-07-13 18:21:02,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605071380] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:21:02,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:21:02,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:21:02,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195054739] [2022-07-13 18:21:02,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:21:02,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:21:02,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:02,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:21:02,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:21:02,301 INFO L87 Difference]: Start difference. First operand 197 states and 304 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2022-07-13 18:21:02,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:02,344 INFO L93 Difference]: Finished difference Result 463 states and 736 transitions. [2022-07-13 18:21:02,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:21:02,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2022-07-13 18:21:02,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:02,347 INFO L225 Difference]: With dead ends: 463 [2022-07-13 18:21:02,347 INFO L226 Difference]: Without dead ends: 323 [2022-07-13 18:21:02,348 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 [2022-07-13 18:21:02,349 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 103 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:02,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 368 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:21:02,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-07-13 18:21:02,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2022-07-13 18:21:02,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 318 states have (on average 1.5723270440251573) internal successors, (500), 318 states have internal predecessors, (500), 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) [2022-07-13 18:21:02,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 500 transitions. [2022-07-13 18:21:02,380 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 500 transitions. Word has length 65 [2022-07-13 18:21:02,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:02,381 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 500 transitions. [2022-07-13 18:21:02,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2022-07-13 18:21:02,381 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 500 transitions. [2022-07-13 18:21:02,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 18:21:02,383 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:02,383 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] [2022-07-13 18:21:02,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 18:21:02,383 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:02,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:02,384 INFO L85 PathProgramCache]: Analyzing trace with hash -2137075392, now seen corresponding path program 1 times [2022-07-13 18:21:02,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:02,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760580729] [2022-07-13 18:21:02,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:02,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:02,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:21:02,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:02,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760580729] [2022-07-13 18:21:02,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760580729] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:21:02,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:21:02,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:21:02,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565885804] [2022-07-13 18:21:02,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:21:02,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:21:02,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:02,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:21:02,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:21:02,452 INFO L87 Difference]: Start difference. First operand 319 states and 500 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2022-07-13 18:21:02,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:02,485 INFO L93 Difference]: Finished difference Result 815 states and 1298 transitions. [2022-07-13 18:21:02,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:21:02,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2022-07-13 18:21:02,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:02,489 INFO L225 Difference]: With dead ends: 815 [2022-07-13 18:21:02,489 INFO L226 Difference]: Without dead ends: 553 [2022-07-13 18:21:02,490 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 [2022-07-13 18:21:02,493 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 97 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:02,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 369 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:21:02,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-07-13 18:21:02,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 547. [2022-07-13 18:21:02,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 546 states have (on average 1.575091575091575) internal successors, (860), 546 states have internal predecessors, (860), 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) [2022-07-13 18:21:02,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 860 transitions. [2022-07-13 18:21:02,520 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 860 transitions. Word has length 67 [2022-07-13 18:21:02,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:02,521 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 860 transitions. [2022-07-13 18:21:02,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2022-07-13 18:21:02,521 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 860 transitions. [2022-07-13 18:21:02,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-13 18:21:02,522 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:02,523 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] [2022-07-13 18:21:02,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 18:21:02,523 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:02,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:02,524 INFO L85 PathProgramCache]: Analyzing trace with hash -544230961, now seen corresponding path program 1 times [2022-07-13 18:21:02,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:02,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167057349] [2022-07-13 18:21:02,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:02,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:02,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:21:02,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:02,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167057349] [2022-07-13 18:21:02,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167057349] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:21:02,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:21:02,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:21:02,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349591450] [2022-07-13 18:21:02,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:21:02,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:21:02,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:02,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:21:02,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:21:02,616 INFO L87 Difference]: Start difference. First operand 547 states and 860 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-13 18:21:02,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:02,809 INFO L93 Difference]: Finished difference Result 2339 states and 3782 transitions. [2022-07-13 18:21:02,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 18:21:02,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 69 [2022-07-13 18:21:02,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:02,817 INFO L225 Difference]: With dead ends: 2339 [2022-07-13 18:21:02,818 INFO L226 Difference]: Without dead ends: 1849 [2022-07-13 18:21:02,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:21:02,820 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 861 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:02,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 1129 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:21:02,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2022-07-13 18:21:02,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 975. [2022-07-13 18:21:02,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 1.5882956878850103) internal successors, (1547), 974 states have internal predecessors, (1547), 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) [2022-07-13 18:21:02,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1547 transitions. [2022-07-13 18:21:02,884 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1547 transitions. Word has length 69 [2022-07-13 18:21:02,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:02,885 INFO L495 AbstractCegarLoop]: Abstraction has 975 states and 1547 transitions. [2022-07-13 18:21:02,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-13 18:21:02,886 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1547 transitions. [2022-07-13 18:21:02,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-13 18:21:02,887 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:02,888 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] [2022-07-13 18:21:02,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 18:21:02,888 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:02,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:02,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1614123231, now seen corresponding path program 1 times [2022-07-13 18:21:02,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:02,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513507970] [2022-07-13 18:21:02,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:02,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:02,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:21:02,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:02,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513507970] [2022-07-13 18:21:02,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513507970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:21:02,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:21:02,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:21:02,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345288196] [2022-07-13 18:21:02,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:21:02,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:21:02,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:02,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:21:02,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:21:02,979 INFO L87 Difference]: Start difference. First operand 975 states and 1547 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2022-07-13 18:21:03,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:03,075 INFO L93 Difference]: Finished difference Result 2837 states and 4577 transitions. [2022-07-13 18:21:03,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:21:03,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 70 [2022-07-13 18:21:03,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:03,083 INFO L225 Difference]: With dead ends: 2837 [2022-07-13 18:21:03,084 INFO L226 Difference]: Without dead ends: 1919 [2022-07-13 18:21:03,086 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 [2022-07-13 18:21:03,087 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 365 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:03,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 585 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:21:03,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2022-07-13 18:21:03,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1438. [2022-07-13 18:21:03,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1437 states have (on average 1.5984690327070286) internal successors, (2297), 1437 states have internal predecessors, (2297), 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) [2022-07-13 18:21:03,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2297 transitions. [2022-07-13 18:21:03,153 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2297 transitions. Word has length 70 [2022-07-13 18:21:03,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:03,153 INFO L495 AbstractCegarLoop]: Abstraction has 1438 states and 2297 transitions. [2022-07-13 18:21:03,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2022-07-13 18:21:03,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2297 transitions. [2022-07-13 18:21:03,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-13 18:21:03,155 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:03,155 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] [2022-07-13 18:21:03,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 18:21:03,156 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:03,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:03,156 INFO L85 PathProgramCache]: Analyzing trace with hash -252040890, now seen corresponding path program 1 times [2022-07-13 18:21:03,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:03,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027922023] [2022-07-13 18:21:03,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:03,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:03,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:21:03,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:03,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027922023] [2022-07-13 18:21:03,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027922023] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:21:03,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:21:03,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:21:03,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407870551] [2022-07-13 18:21:03,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:21:03,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:21:03,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:03,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:21:03,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:21:03,237 INFO L87 Difference]: Start difference. First operand 1438 states and 2297 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2022-07-13 18:21:03,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:03,379 INFO L93 Difference]: Finished difference Result 4165 states and 6715 transitions. [2022-07-13 18:21:03,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:21:03,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 71 [2022-07-13 18:21:03,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:03,390 INFO L225 Difference]: With dead ends: 4165 [2022-07-13 18:21:03,390 INFO L226 Difference]: Without dead ends: 2784 [2022-07-13 18:21:03,392 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 [2022-07-13 18:21:03,393 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 363 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:03,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 661 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:21:03,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2022-07-13 18:21:03,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 2099. [2022-07-13 18:21:03,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2099 states, 2098 states have (on average 1.5986653956148713) internal successors, (3354), 2098 states have internal predecessors, (3354), 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) [2022-07-13 18:21:03,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 3354 transitions. [2022-07-13 18:21:03,525 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 3354 transitions. Word has length 71 [2022-07-13 18:21:03,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:03,525 INFO L495 AbstractCegarLoop]: Abstraction has 2099 states and 3354 transitions. [2022-07-13 18:21:03,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2022-07-13 18:21:03,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 3354 transitions. [2022-07-13 18:21:03,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-13 18:21:03,527 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:03,527 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] [2022-07-13 18:21:03,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 18:21:03,528 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:03,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:03,529 INFO L85 PathProgramCache]: Analyzing trace with hash -630566449, now seen corresponding path program 1 times [2022-07-13 18:21:03,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:03,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848393649] [2022-07-13 18:21:03,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:03,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:03,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:21:03,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:03,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848393649] [2022-07-13 18:21:03,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848393649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:21:03,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:21:03,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:21:03,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264228131] [2022-07-13 18:21:03,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:21:03,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:21:03,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:03,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:21:03,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:21:03,578 INFO L87 Difference]: Start difference. First operand 2099 states and 3354 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2022-07-13 18:21:03,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:03,747 INFO L93 Difference]: Finished difference Result 4342 states and 6948 transitions. [2022-07-13 18:21:03,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:21:03,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2022-07-13 18:21:03,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:03,768 INFO L225 Difference]: With dead ends: 4342 [2022-07-13 18:21:03,769 INFO L226 Difference]: Without dead ends: 3126 [2022-07-13 18:21:03,770 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 [2022-07-13 18:21:03,771 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 96 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 415 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 [2022-07-13 18:21:03,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 415 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:21:03,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2022-07-13 18:21:03,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 3124. [2022-07-13 18:21:03,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3124 states, 3123 states have (on average 1.585014409221902) internal successors, (4950), 3123 states have internal predecessors, (4950), 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) [2022-07-13 18:21:03,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3124 states to 3124 states and 4950 transitions. [2022-07-13 18:21:03,935 INFO L78 Accepts]: Start accepts. Automaton has 3124 states and 4950 transitions. Word has length 72 [2022-07-13 18:21:03,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:03,935 INFO L495 AbstractCegarLoop]: Abstraction has 3124 states and 4950 transitions. [2022-07-13 18:21:03,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2022-07-13 18:21:03,935 INFO L276 IsEmpty]: Start isEmpty. Operand 3124 states and 4950 transitions. [2022-07-13 18:21:03,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-13 18:21:03,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:03,937 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] [2022-07-13 18:21:03,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 18:21:03,937 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:03,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:03,938 INFO L85 PathProgramCache]: Analyzing trace with hash -808156936, now seen corresponding path program 1 times [2022-07-13 18:21:03,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:03,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943171442] [2022-07-13 18:21:03,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:03,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:03,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:21:03,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:03,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943171442] [2022-07-13 18:21:03,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943171442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:21:03,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:21:03,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:21:03,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876817978] [2022-07-13 18:21:03,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:21:03,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:21:03,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:03,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:21:03,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:21:03,994 INFO L87 Difference]: Start difference. First operand 3124 states and 4950 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2022-07-13 18:21:04,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:04,265 INFO L93 Difference]: Finished difference Result 9396 states and 15009 transitions. [2022-07-13 18:21:04,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:21:04,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 72 [2022-07-13 18:21:04,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:04,293 INFO L225 Difference]: With dead ends: 9396 [2022-07-13 18:21:04,293 INFO L226 Difference]: Without dead ends: 6460 [2022-07-13 18:21:04,299 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 [2022-07-13 18:21:04,300 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 361 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:04,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 661 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:21:04,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6460 states. [2022-07-13 18:21:04,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6460 to 4776. [2022-07-13 18:21:04,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4776 states, 4775 states have (on average 1.584083769633508) internal successors, (7564), 4775 states have internal predecessors, (7564), 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) [2022-07-13 18:21:04,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4776 states to 4776 states and 7564 transitions. [2022-07-13 18:21:04,532 INFO L78 Accepts]: Start accepts. Automaton has 4776 states and 7564 transitions. Word has length 72 [2022-07-13 18:21:04,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:04,532 INFO L495 AbstractCegarLoop]: Abstraction has 4776 states and 7564 transitions. [2022-07-13 18:21:04,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2022-07-13 18:21:04,533 INFO L276 IsEmpty]: Start isEmpty. Operand 4776 states and 7564 transitions. [2022-07-13 18:21:04,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-13 18:21:04,534 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:04,534 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] [2022-07-13 18:21:04,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 18:21:04,535 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:04,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:04,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1968035874, now seen corresponding path program 1 times [2022-07-13 18:21:04,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:04,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533535550] [2022-07-13 18:21:04,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:04,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:04,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:21:04,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:04,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533535550] [2022-07-13 18:21:04,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533535550] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:21:04,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:21:04,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:21:04,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093991624] [2022-07-13 18:21:04,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:21:04,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:21:04,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:04,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:21:04,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:21:04,569 INFO L87 Difference]: Start difference. First operand 4776 states and 7564 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2022-07-13 18:21:04,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:04,832 INFO L93 Difference]: Finished difference Result 10472 states and 16650 transitions. [2022-07-13 18:21:04,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:21:04,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2022-07-13 18:21:04,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:04,862 INFO L225 Difference]: With dead ends: 10472 [2022-07-13 18:21:04,862 INFO L226 Difference]: Without dead ends: 7115 [2022-07-13 18:21:04,868 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 [2022-07-13 18:21:04,868 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 102 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 443 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 [2022-07-13 18:21:04,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 443 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:21:04,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7115 states. [2022-07-13 18:21:05,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7115 to 7113. [2022-07-13 18:21:05,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7113 states, 7112 states have (on average 1.5752249718785152) internal successors, (11203), 7112 states have internal predecessors, (11203), 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) [2022-07-13 18:21:05,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7113 states to 7113 states and 11203 transitions. [2022-07-13 18:21:05,213 INFO L78 Accepts]: Start accepts. Automaton has 7113 states and 11203 transitions. Word has length 72 [2022-07-13 18:21:05,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:05,214 INFO L495 AbstractCegarLoop]: Abstraction has 7113 states and 11203 transitions. [2022-07-13 18:21:05,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2022-07-13 18:21:05,214 INFO L276 IsEmpty]: Start isEmpty. Operand 7113 states and 11203 transitions. [2022-07-13 18:21:05,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-13 18:21:05,215 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:05,215 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] [2022-07-13 18:21:05,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 18:21:05,216 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:05,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:05,216 INFO L85 PathProgramCache]: Analyzing trace with hash 134390635, now seen corresponding path program 1 times [2022-07-13 18:21:05,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:05,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391629882] [2022-07-13 18:21:05,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:05,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:05,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:21:05,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:05,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391629882] [2022-07-13 18:21:05,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391629882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:21:05,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:21:05,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:21:05,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444153721] [2022-07-13 18:21:05,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:21:05,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:21:05,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:05,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:21:05,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:21:05,251 INFO L87 Difference]: Start difference. First operand 7113 states and 11203 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2022-07-13 18:21:05,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:05,644 INFO L93 Difference]: Finished difference Result 15869 states and 25266 transitions. [2022-07-13 18:21:05,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:21:05,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2022-07-13 18:21:05,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:05,669 INFO L225 Difference]: With dead ends: 15869 [2022-07-13 18:21:05,670 INFO L226 Difference]: Without dead ends: 10691 [2022-07-13 18:21:05,678 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 [2022-07-13 18:21:05,679 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 108 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 464 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 [2022-07-13 18:21:05,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 464 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:21:05,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10691 states. [2022-07-13 18:21:06,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10691 to 10689. [2022-07-13 18:21:06,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10689 states, 10688 states have (on average 1.5716691616766467) internal successors, (16798), 10688 states have internal predecessors, (16798), 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) [2022-07-13 18:21:06,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10689 states to 10689 states and 16798 transitions. [2022-07-13 18:21:06,181 INFO L78 Accepts]: Start accepts. Automaton has 10689 states and 16798 transitions. Word has length 72 [2022-07-13 18:21:06,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:06,182 INFO L495 AbstractCegarLoop]: Abstraction has 10689 states and 16798 transitions. [2022-07-13 18:21:06,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2022-07-13 18:21:06,183 INFO L276 IsEmpty]: Start isEmpty. Operand 10689 states and 16798 transitions. [2022-07-13 18:21:06,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-13 18:21:06,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:06,184 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] [2022-07-13 18:21:06,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 18:21:06,184 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:06,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:06,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1377255792, now seen corresponding path program 1 times [2022-07-13 18:21:06,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:06,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358551105] [2022-07-13 18:21:06,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:06,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:06,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:21:06,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:06,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358551105] [2022-07-13 18:21:06,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358551105] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:21:06,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:21:06,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:21:06,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404606430] [2022-07-13 18:21:06,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:21:06,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:21:06,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:06,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:21:06,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:21:06,276 INFO L87 Difference]: Start difference. First operand 10689 states and 16798 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2022-07-13 18:21:06,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:06,804 INFO L93 Difference]: Finished difference Result 21301 states and 33492 transitions. [2022-07-13 18:21:06,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:21:06,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 74 [2022-07-13 18:21:06,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:06,827 INFO L225 Difference]: With dead ends: 21301 [2022-07-13 18:21:06,828 INFO L226 Difference]: Without dead ends: 10691 [2022-07-13 18:21:06,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:21:06,843 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 362 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:06,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 543 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:21:06,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10691 states. [2022-07-13 18:21:07,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10691 to 10689. [2022-07-13 18:21:07,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10689 states, 10688 states have (on average 1.5599738023952097) internal successors, (16673), 10688 states have internal predecessors, (16673), 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) [2022-07-13 18:21:07,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10689 states to 10689 states and 16673 transitions. [2022-07-13 18:21:07,291 INFO L78 Accepts]: Start accepts. Automaton has 10689 states and 16673 transitions. Word has length 74 [2022-07-13 18:21:07,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:07,291 INFO L495 AbstractCegarLoop]: Abstraction has 10689 states and 16673 transitions. [2022-07-13 18:21:07,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2022-07-13 18:21:07,292 INFO L276 IsEmpty]: Start isEmpty. Operand 10689 states and 16673 transitions. [2022-07-13 18:21:07,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-13 18:21:07,292 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:07,292 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] [2022-07-13 18:21:07,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 18:21:07,293 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:07,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:07,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1698241801, now seen corresponding path program 1 times [2022-07-13 18:21:07,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:07,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329900167] [2022-07-13 18:21:07,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:07,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:07,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:21:07,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:07,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329900167] [2022-07-13 18:21:07,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329900167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:21:07,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:21:07,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:21:07,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450241993] [2022-07-13 18:21:07,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:21:07,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:21:07,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:07,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:21:07,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:21:07,403 INFO L87 Difference]: Start difference. First operand 10689 states and 16673 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2022-07-13 18:21:08,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:08,092 INFO L93 Difference]: Finished difference Result 30615 states and 47912 transitions. [2022-07-13 18:21:08,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:21:08,092 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 77 [2022-07-13 18:21:08,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:08,187 INFO L225 Difference]: With dead ends: 30615 [2022-07-13 18:21:08,188 INFO L226 Difference]: Without dead ends: 20005 [2022-07-13 18:21:08,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:21:08,201 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 356 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:08,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 547 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:21:08,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20005 states. [2022-07-13 18:21:09,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20005 to 20003. [2022-07-13 18:21:09,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20003 states, 20002 states have (on average 1.5475452454754524) internal successors, (30954), 20002 states have internal predecessors, (30954), 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) [2022-07-13 18:21:09,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20003 states to 20003 states and 30954 transitions. [2022-07-13 18:21:09,189 INFO L78 Accepts]: Start accepts. Automaton has 20003 states and 30954 transitions. Word has length 77 [2022-07-13 18:21:09,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:09,190 INFO L495 AbstractCegarLoop]: Abstraction has 20003 states and 30954 transitions. [2022-07-13 18:21:09,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2022-07-13 18:21:09,190 INFO L276 IsEmpty]: Start isEmpty. Operand 20003 states and 30954 transitions. [2022-07-13 18:21:09,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-13 18:21:09,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:09,191 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] [2022-07-13 18:21:09,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 18:21:09,191 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:09,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:09,192 INFO L85 PathProgramCache]: Analyzing trace with hash 677312633, now seen corresponding path program 1 times [2022-07-13 18:21:09,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:09,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886032341] [2022-07-13 18:21:09,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:09,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:09,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:21:09,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:09,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886032341] [2022-07-13 18:21:09,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886032341] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:21:09,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:21:09,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 18:21:09,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660134974] [2022-07-13 18:21:09,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:21:09,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 18:21:09,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:09,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 18:21:09,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:21:09,291 INFO L87 Difference]: Start difference. First operand 20003 states and 30954 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2022-07-13 18:21:10,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:10,863 INFO L93 Difference]: Finished difference Result 39191 states and 60008 transitions. [2022-07-13 18:21:10,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 18:21:10,864 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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 78 [2022-07-13 18:21:10,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:10,929 INFO L225 Difference]: With dead ends: 39191 [2022-07-13 18:21:10,929 INFO L226 Difference]: Without dead ends: 39189 [2022-07-13 18:21:10,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-13 18:21:10,940 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 917 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:10,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 1064 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:21:10,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39189 states. [2022-07-13 18:21:12,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39189 to 21089. [2022-07-13 18:21:12,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21089 states, 21088 states have (on average 1.518920713201821) internal successors, (32031), 21088 states have internal predecessors, (32031), 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) [2022-07-13 18:21:12,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21089 states to 21089 states and 32031 transitions. [2022-07-13 18:21:12,304 INFO L78 Accepts]: Start accepts. Automaton has 21089 states and 32031 transitions. Word has length 78 [2022-07-13 18:21:12,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:12,305 INFO L495 AbstractCegarLoop]: Abstraction has 21089 states and 32031 transitions. [2022-07-13 18:21:12,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2022-07-13 18:21:12,305 INFO L276 IsEmpty]: Start isEmpty. Operand 21089 states and 32031 transitions. [2022-07-13 18:21:12,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 18:21:12,308 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:12,308 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:21:12,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 18:21:12,308 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:12,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:12,309 INFO L85 PathProgramCache]: Analyzing trace with hash -931565963, now seen corresponding path program 1 times [2022-07-13 18:21:12,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:12,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019672038] [2022-07-13 18:21:12,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:12,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:12,374 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 18:21:12,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:12,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019672038] [2022-07-13 18:21:12,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019672038] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:21:12,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:21:12,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:21:12,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878918717] [2022-07-13 18:21:12,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:21:12,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:21:12,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:12,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:21:12,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:21:12,379 INFO L87 Difference]: Start difference. First operand 21089 states and 32031 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2022-07-13 18:21:14,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:14,669 INFO L93 Difference]: Finished difference Result 51599 states and 78693 transitions. [2022-07-13 18:21:14,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:21:14,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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 105 [2022-07-13 18:21:14,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:14,793 INFO L225 Difference]: With dead ends: 51599 [2022-07-13 18:21:14,793 INFO L226 Difference]: Without dead ends: 41597 [2022-07-13 18:21:14,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:21:14,830 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 463 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:14,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 831 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:21:14,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41597 states. [2022-07-13 18:21:16,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41597 to 32429. [2022-07-13 18:21:16,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32429 states, 32428 states have (on average 1.5179782903663501) internal successors, (49225), 32428 states have internal predecessors, (49225), 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) [2022-07-13 18:21:16,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32429 states to 32429 states and 49225 transitions. [2022-07-13 18:21:16,906 INFO L78 Accepts]: Start accepts. Automaton has 32429 states and 49225 transitions. Word has length 105 [2022-07-13 18:21:16,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:16,906 INFO L495 AbstractCegarLoop]: Abstraction has 32429 states and 49225 transitions. [2022-07-13 18:21:16,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2022-07-13 18:21:16,907 INFO L276 IsEmpty]: Start isEmpty. Operand 32429 states and 49225 transitions. [2022-07-13 18:21:16,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 18:21:16,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:16,909 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:21:16,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 18:21:16,910 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:16,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:16,910 INFO L85 PathProgramCache]: Analyzing trace with hash 2025931908, now seen corresponding path program 1 times [2022-07-13 18:21:16,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:16,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33902693] [2022-07-13 18:21:16,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:16,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:16,965 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 18:21:16,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:16,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33902693] [2022-07-13 18:21:16,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33902693] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:21:16,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:21:16,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:21:16,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141879981] [2022-07-13 18:21:16,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:21:16,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:21:16,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:16,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:21:16,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:21:16,968 INFO L87 Difference]: Start difference. First operand 32429 states and 49225 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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) [2022-07-13 18:21:19,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:19,187 INFO L93 Difference]: Finished difference Result 55607 states and 84829 transitions. [2022-07-13 18:21:19,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:21:19,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 105 [2022-07-13 18:21:19,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:19,272 INFO L225 Difference]: With dead ends: 55607 [2022-07-13 18:21:19,272 INFO L226 Difference]: Without dead ends: 45605 [2022-07-13 18:21:19,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:21:19,336 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 457 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:19,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 891 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:21:19,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45605 states. [2022-07-13 18:21:21,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45605 to 43951. [2022-07-13 18:21:21,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43951 states, 43950 states have (on average 1.5191581342434586) internal successors, (66767), 43950 states have internal predecessors, (66767), 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) [2022-07-13 18:21:22,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43951 states to 43951 states and 66767 transitions. [2022-07-13 18:21:22,352 INFO L78 Accepts]: Start accepts. Automaton has 43951 states and 66767 transitions. Word has length 105 [2022-07-13 18:21:22,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:22,352 INFO L495 AbstractCegarLoop]: Abstraction has 43951 states and 66767 transitions. [2022-07-13 18:21:22,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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) [2022-07-13 18:21:22,353 INFO L276 IsEmpty]: Start isEmpty. Operand 43951 states and 66767 transitions. [2022-07-13 18:21:22,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 18:21:22,356 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:22,356 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:21:22,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 18:21:22,356 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:22,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:22,357 INFO L85 PathProgramCache]: Analyzing trace with hash -166608879, now seen corresponding path program 1 times [2022-07-13 18:21:22,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:22,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045669291] [2022-07-13 18:21:22,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:22,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:22,407 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 18:21:22,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:22,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045669291] [2022-07-13 18:21:22,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045669291] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:21:22,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:21:22,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:21:22,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794620183] [2022-07-13 18:21:22,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:21:22,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:21:22,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:22,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:21:22,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:21:22,409 INFO L87 Difference]: Start difference. First operand 43951 states and 66767 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2022-07-13 18:21:25,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:25,225 INFO L93 Difference]: Finished difference Result 91773 states and 140139 transitions. [2022-07-13 18:21:25,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:21:25,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 105 [2022-07-13 18:21:25,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:25,345 INFO L225 Difference]: With dead ends: 91773 [2022-07-13 18:21:25,345 INFO L226 Difference]: Without dead ends: 81511 [2022-07-13 18:21:25,374 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 [2022-07-13 18:21:25,374 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 85 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:25,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 373 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:21:25,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81511 states. [2022-07-13 18:21:30,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81511 to 81394. [2022-07-13 18:21:30,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81394 states, 81393 states have (on average 1.5231285245659947) internal successors, (123972), 81393 states have internal predecessors, (123972), 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) [2022-07-13 18:21:30,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81394 states to 81394 states and 123972 transitions. [2022-07-13 18:21:30,404 INFO L78 Accepts]: Start accepts. Automaton has 81394 states and 123972 transitions. Word has length 105 [2022-07-13 18:21:30,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:30,404 INFO L495 AbstractCegarLoop]: Abstraction has 81394 states and 123972 transitions. [2022-07-13 18:21:30,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2022-07-13 18:21:30,404 INFO L276 IsEmpty]: Start isEmpty. Operand 81394 states and 123972 transitions. [2022-07-13 18:21:30,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 18:21:30,433 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:30,435 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:21:30,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 18:21:30,436 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:30,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:30,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1581376920, now seen corresponding path program 1 times [2022-07-13 18:21:30,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:30,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932754838] [2022-07-13 18:21:30,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:30,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:30,499 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:21:30,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:30,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932754838] [2022-07-13 18:21:30,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932754838] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:21:30,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:21:30,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:21:30,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054828755] [2022-07-13 18:21:30,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:21:30,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:21:30,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:30,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:21:30,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:21:30,503 INFO L87 Difference]: Start difference. First operand 81394 states and 123972 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-07-13 18:21:38,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:38,617 INFO L93 Difference]: Finished difference Result 241522 states and 367567 transitions. [2022-07-13 18:21:38,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:21:38,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2022-07-13 18:21:38,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:38,922 INFO L225 Difference]: With dead ends: 241522 [2022-07-13 18:21:38,923 INFO L226 Difference]: Without dead ends: 160199 [2022-07-13 18:21:39,009 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 [2022-07-13 18:21:39,011 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 131 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:39,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 451 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:21:39,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160199 states. [2022-07-13 18:21:48,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160199 to 160197. [2022-07-13 18:21:48,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160197 states, 160196 states have (on average 1.5108804214836824) internal successors, (242037), 160196 states have internal predecessors, (242037), 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)