./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 35987657 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 75fd132a1a39ad1f2927845122893235fdf65fe2225472c79a2e84525dcd60fe --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 17:55:18,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 17:55:18,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 17:55:18,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 17:55:18,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 17:55:18,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 17:55:18,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 17:55:18,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 17:55:18,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 17:55:18,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 17:55:18,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 17:55:18,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 17:55:18,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 17:55:18,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 17:55:18,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 17:55:18,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 17:55:18,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 17:55:18,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 17:55:18,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 17:55:18,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 17:55:18,843 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 17:55:18,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 17:55:18,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 17:55:18,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 17:55:18,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 17:55:18,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 17:55:18,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 17:55:18,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 17:55:18,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 17:55:18,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 17:55:18,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 17:55:18,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 17:55:18,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 17:55:18,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 17:55:18,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 17:55:18,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 17:55:18,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 17:55:18,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 17:55:18,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 17:55:18,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 17:55:18,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 17:55:18,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 17:55:18,863 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-21 17:55:18,882 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 17:55:18,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 17:55:18,882 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 17:55:18,883 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 17:55:18,883 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 17:55:18,883 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 17:55:18,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 17:55:18,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 17:55:18,884 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 17:55:18,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 17:55:18,885 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 17:55:18,885 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-21 17:55:18,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 17:55:18,885 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 17:55:18,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 17:55:18,886 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-21 17:55:18,886 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-21 17:55:18,886 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-21 17:55:18,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 17:55:18,886 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 17:55:18,886 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 17:55:18,887 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 17:55:18,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 17:55:18,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 17:55:18,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 17:55:18,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 17:55:18,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 17:55:18,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 17:55:18,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 17:55:18,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 17:55:18,888 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75fd132a1a39ad1f2927845122893235fdf65fe2225472c79a2e84525dcd60fe [2022-07-21 17:55:19,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 17:55:19,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 17:55:19,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 17:55:19,157 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 17:55:19,158 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 17:55:19,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-2.c [2022-07-21 17:55:19,205 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7ca26612/d3a65e79f7ab4941a74beb83ee070cee/FLAG8378f74b6 [2022-07-21 17:55:19,684 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 17:55:19,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-2.c [2022-07-21 17:55:19,703 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7ca26612/d3a65e79f7ab4941a74beb83ee070cee/FLAG8378f74b6 [2022-07-21 17:55:20,011 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7ca26612/d3a65e79f7ab4941a74beb83ee070cee [2022-07-21 17:55:20,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 17:55:20,014 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 17:55:20,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 17:55:20,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 17:55:20,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 17:55:20,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:55:20" (1/1) ... [2022-07-21 17:55:20,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e265331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:55:20, skipping insertion in model container [2022-07-21 17:55:20,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:55:20" (1/1) ... [2022-07-21 17:55:20,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 17:55:20,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 17:55:20,145 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/ntdrivers-simplified/cdaudio_simpl1.cil-2.c[2073,2086] [2022-07-21 17:55:20,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 17:55:20,318 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 17:55:20,338 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/ntdrivers-simplified/cdaudio_simpl1.cil-2.c[2073,2086] [2022-07-21 17:55:20,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 17:55:20,421 INFO L208 MainTranslator]: Completed translation [2022-07-21 17:55:20,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:55:20 WrapperNode [2022-07-21 17:55:20,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 17:55:20,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 17:55:20,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 17:55:20,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 17:55:20,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:55:20" (1/1) ... [2022-07-21 17:55:20,442 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:55:20" (1/1) ... [2022-07-21 17:55:20,501 INFO L137 Inliner]: procedures = 41, calls = 107, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 1581 [2022-07-21 17:55:20,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 17:55:20,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 17:55:20,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 17:55:20,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 17:55:20,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:55:20" (1/1) ... [2022-07-21 17:55:20,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:55:20" (1/1) ... [2022-07-21 17:55:20,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:55:20" (1/1) ... [2022-07-21 17:55:20,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:55:20" (1/1) ... [2022-07-21 17:55:20,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:55:20" (1/1) ... [2022-07-21 17:55:20,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:55:20" (1/1) ... [2022-07-21 17:55:20,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:55:20" (1/1) ... [2022-07-21 17:55:20,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 17:55:20,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 17:55:20,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 17:55:20,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 17:55:20,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:55:20" (1/1) ... [2022-07-21 17:55:20,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 17:55:20,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:55:20,643 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) [2022-07-21 17:55:20,667 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 [2022-07-21 17:55:20,673 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-07-21 17:55:20,674 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-07-21 17:55:20,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 17:55:20,674 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2022-07-21 17:55:20,674 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2022-07-21 17:55:20,674 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-07-21 17:55:20,675 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-07-21 17:55:20,675 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-07-21 17:55:20,675 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-07-21 17:55:20,675 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-07-21 17:55:20,675 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-07-21 17:55:20,676 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-07-21 17:55:20,676 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-07-21 17:55:20,676 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-07-21 17:55:20,676 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-07-21 17:55:20,677 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-07-21 17:55:20,677 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-07-21 17:55:20,677 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-07-21 17:55:20,677 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-07-21 17:55:20,677 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-07-21 17:55:20,677 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-07-21 17:55:20,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 17:55:20,677 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-07-21 17:55:20,678 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-07-21 17:55:20,678 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-07-21 17:55:20,678 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-07-21 17:55:20,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 17:55:20,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 17:55:20,678 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-07-21 17:55:20,678 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-07-21 17:55:20,884 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 17:55:20,885 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 17:55:20,960 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:55:20,988 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-07-21 17:55:20,989 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-07-21 17:55:21,041 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:55:21,050 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-07-21 17:55:21,051 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-07-21 17:55:21,055 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:55:21,055 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:55:21,057 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:55:21,062 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:55:21,068 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:55:21,070 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:55:21,071 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:55:21,488 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: CdAudioPnp_#res#1 := 0; [2022-07-21 17:55:21,489 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##258: assume !false; [2022-07-21 17:55:21,489 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##257: assume false; [2022-07-21 17:55:21,489 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##286: assume !false; [2022-07-21 17:55:21,489 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##285: assume false; [2022-07-21 17:55:21,489 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume !false; [2022-07-21 17:55:21,489 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume false; [2022-07-21 17:55:21,490 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##133: assume false; [2022-07-21 17:55:21,490 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##134: assume !false; [2022-07-21 17:55:21,490 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume !false; [2022-07-21 17:55:21,490 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume false; [2022-07-21 17:55:21,490 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-07-21 17:55:21,491 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-07-21 17:55:21,491 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##331: assume false; [2022-07-21 17:55:21,491 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##332: assume !false; [2022-07-21 17:55:21,522 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 17:55:21,530 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 17:55:21,530 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 17:55:21,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:55:21 BoogieIcfgContainer [2022-07-21 17:55:21,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 17:55:21,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 17:55:21,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 17:55:21,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 17:55:21,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:55:20" (1/3) ... [2022-07-21 17:55:21,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27953184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:55:21, skipping insertion in model container [2022-07-21 17:55:21,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:55:20" (2/3) ... [2022-07-21 17:55:21,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27953184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:55:21, skipping insertion in model container [2022-07-21 17:55:21,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:55:21" (3/3) ... [2022-07-21 17:55:21,536 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-2.c [2022-07-21 17:55:21,545 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 17:55:21,545 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 17:55:21,591 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 17:55:21,597 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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@2c9c9ec6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6f71fa42 [2022-07-21 17:55:21,598 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 17:55:21,602 INFO L276 IsEmpty]: Start isEmpty. Operand has 469 states, 367 states have (on average 1.5095367847411445) internal successors, (554), 386 states have internal predecessors, (554), 86 states have call successors, (86), 13 states have call predecessors, (86), 13 states have return successors, (86), 82 states have call predecessors, (86), 86 states have call successors, (86) [2022-07-21 17:55:21,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-21 17:55:21,607 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:21,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:21,607 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:21,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:21,611 INFO L85 PathProgramCache]: Analyzing trace with hash 2107937654, now seen corresponding path program 1 times [2022-07-21 17:55:21,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:21,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666766156] [2022-07-21 17:55:21,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:21,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:21,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:21,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:21,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666766156] [2022-07-21 17:55:21,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666766156] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:21,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:21,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 17:55:21,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901421291] [2022-07-21 17:55:21,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:21,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:55:21,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:21,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:55:21,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:55:21,789 INFO L87 Difference]: Start difference. First operand has 469 states, 367 states have (on average 1.5095367847411445) internal successors, (554), 386 states have internal predecessors, (554), 86 states have call successors, (86), 13 states have call predecessors, (86), 13 states have return successors, (86), 82 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-07-21 17:55:21,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:21,936 INFO L93 Difference]: Finished difference Result 621 states and 922 transitions. [2022-07-21 17:55:21,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:55:21,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-07-21 17:55:21,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:21,954 INFO L225 Difference]: With dead ends: 621 [2022-07-21 17:55:21,957 INFO L226 Difference]: Without dead ends: 617 [2022-07-21 17:55:21,958 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 [2022-07-21 17:55:21,961 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 690 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:21,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 946 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:55:21,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-07-21 17:55:22,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 601. [2022-07-21 17:55:22,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 485 states have (on average 1.4721649484536083) internal successors, (714), 492 states have internal predecessors, (714), 93 states have call successors, (93), 18 states have call predecessors, (93), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2022-07-21 17:55:22,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 901 transitions. [2022-07-21 17:55:22,054 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 901 transitions. Word has length 8 [2022-07-21 17:55:22,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:22,057 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 901 transitions. [2022-07-21 17:55:22,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-07-21 17:55:22,057 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 901 transitions. [2022-07-21 17:55:22,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-21 17:55:22,059 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:22,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:22,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 17:55:22,060 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:22,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:22,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1313128949, now seen corresponding path program 1 times [2022-07-21 17:55:22,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:22,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415539740] [2022-07-21 17:55:22,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:22,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:22,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:22,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:22,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415539740] [2022-07-21 17:55:22,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415539740] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:22,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:22,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 17:55:22,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555961221] [2022-07-21 17:55:22,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:22,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:55:22,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:22,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:55:22,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:55:22,135 INFO L87 Difference]: Start difference. First operand 601 states and 901 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-07-21 17:55:22,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:22,169 INFO L93 Difference]: Finished difference Result 603 states and 901 transitions. [2022-07-21 17:55:22,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:55:22,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2022-07-21 17:55:22,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:22,175 INFO L225 Difference]: With dead ends: 603 [2022-07-21 17:55:22,175 INFO L226 Difference]: Without dead ends: 603 [2022-07-21 17:55:22,178 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 [2022-07-21 17:55:22,179 INFO L413 NwaCegarLoop]: 701 mSDtfsCounter, 384 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:22,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 942 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:55:22,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2022-07-21 17:55:22,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 601. [2022-07-21 17:55:22,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 485 states have (on average 1.4701030927835053) internal successors, (713), 492 states have internal predecessors, (713), 93 states have call successors, (93), 18 states have call predecessors, (93), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2022-07-21 17:55:22,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 900 transitions. [2022-07-21 17:55:22,210 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 900 transitions. Word has length 9 [2022-07-21 17:55:22,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:22,211 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 900 transitions. [2022-07-21 17:55:22,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-07-21 17:55:22,212 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 900 transitions. [2022-07-21 17:55:22,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-21 17:55:22,212 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:22,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:22,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 17:55:22,212 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:22,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:22,218 INFO L85 PathProgramCache]: Analyzing trace with hash 929451779, now seen corresponding path program 1 times [2022-07-21 17:55:22,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:22,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639592470] [2022-07-21 17:55:22,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:22,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:22,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:22,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:22,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639592470] [2022-07-21 17:55:22,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639592470] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:22,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:22,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 17:55:22,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671147615] [2022-07-21 17:55:22,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:22,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:55:22,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:22,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:55:22,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:55:22,268 INFO L87 Difference]: Start difference. First operand 601 states and 900 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-07-21 17:55:22,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:22,351 INFO L93 Difference]: Finished difference Result 600 states and 899 transitions. [2022-07-21 17:55:22,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:55:22,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2022-07-21 17:55:22,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:22,354 INFO L225 Difference]: With dead ends: 600 [2022-07-21 17:55:22,354 INFO L226 Difference]: Without dead ends: 597 [2022-07-21 17:55:22,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:55:22,355 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 416 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:22,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 847 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:55:22,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2022-07-21 17:55:22,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 591. [2022-07-21 17:55:22,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 476 states have (on average 1.4516806722689075) internal successors, (691), 482 states have internal predecessors, (691), 93 states have call successors, (93), 18 states have call predecessors, (93), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2022-07-21 17:55:22,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 878 transitions. [2022-07-21 17:55:22,370 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 878 transitions. Word has length 9 [2022-07-21 17:55:22,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:22,370 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 878 transitions. [2022-07-21 17:55:22,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-07-21 17:55:22,370 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 878 transitions. [2022-07-21 17:55:22,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-21 17:55:22,371 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:22,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:22,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 17:55:22,371 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:22,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:22,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1469618303, now seen corresponding path program 1 times [2022-07-21 17:55:22,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:22,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789196691] [2022-07-21 17:55:22,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:22,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:22,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:22,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:22,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789196691] [2022-07-21 17:55:22,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789196691] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:22,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:22,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 17:55:22,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118646170] [2022-07-21 17:55:22,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:22,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:55:22,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:22,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:55:22,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:55:22,404 INFO L87 Difference]: Start difference. First operand 591 states and 878 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:22,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:22,443 INFO L93 Difference]: Finished difference Result 594 states and 880 transitions. [2022-07-21 17:55:22,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:55:22,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-21 17:55:22,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:22,445 INFO L225 Difference]: With dead ends: 594 [2022-07-21 17:55:22,446 INFO L226 Difference]: Without dead ends: 591 [2022-07-21 17:55:22,446 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 [2022-07-21 17:55:22,447 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 0 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:22,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1329 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:55:22,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-07-21 17:55:22,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2022-07-21 17:55:22,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 476 states have (on average 1.449579831932773) internal successors, (690), 482 states have internal predecessors, (690), 93 states have call successors, (93), 18 states have call predecessors, (93), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2022-07-21 17:55:22,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 877 transitions. [2022-07-21 17:55:22,459 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 877 transitions. Word has length 13 [2022-07-21 17:55:22,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:22,459 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 877 transitions. [2022-07-21 17:55:22,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:22,460 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 877 transitions. [2022-07-21 17:55:22,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-21 17:55:22,460 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:22,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:22,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 17:55:22,461 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:22,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:22,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1712839995, now seen corresponding path program 1 times [2022-07-21 17:55:22,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:22,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765344032] [2022-07-21 17:55:22,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:22,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:22,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:22,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:22,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765344032] [2022-07-21 17:55:22,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765344032] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:22,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:22,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 17:55:22,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98810992] [2022-07-21 17:55:22,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:22,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:55:22,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:22,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:55:22,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:55:22,487 INFO L87 Difference]: Start difference. First operand 591 states and 877 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:22,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:22,604 INFO L93 Difference]: Finished difference Result 835 states and 1220 transitions. [2022-07-21 17:55:22,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:55:22,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-07-21 17:55:22,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:22,609 INFO L225 Difference]: With dead ends: 835 [2022-07-21 17:55:22,609 INFO L226 Difference]: Without dead ends: 834 [2022-07-21 17:55:22,610 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 [2022-07-21 17:55:22,610 INFO L413 NwaCegarLoop]: 818 mSDtfsCounter, 564 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:22,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 1040 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:55:22,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-07-21 17:55:22,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 791. [2022-07-21 17:55:22,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 649 states have (on average 1.4206471494607087) internal successors, (922), 641 states have internal predecessors, (922), 106 states have call successors, (106), 31 states have call predecessors, (106), 35 states have return successors, (136), 122 states have call predecessors, (136), 96 states have call successors, (136) [2022-07-21 17:55:22,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1164 transitions. [2022-07-21 17:55:22,628 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1164 transitions. Word has length 15 [2022-07-21 17:55:22,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:22,628 INFO L495 AbstractCegarLoop]: Abstraction has 791 states and 1164 transitions. [2022-07-21 17:55:22,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:22,628 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1164 transitions. [2022-07-21 17:55:22,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-21 17:55:22,629 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:22,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:22,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 17:55:22,630 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:22,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:22,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1752786185, now seen corresponding path program 1 times [2022-07-21 17:55:22,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:22,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537240170] [2022-07-21 17:55:22,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:22,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:22,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:22,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:22,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537240170] [2022-07-21 17:55:22,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537240170] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:22,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:22,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 17:55:22,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172701075] [2022-07-21 17:55:22,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:22,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:55:22,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:22,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:55:22,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:55:22,660 INFO L87 Difference]: Start difference. First operand 791 states and 1164 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:22,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:22,677 INFO L93 Difference]: Finished difference Result 867 states and 1260 transitions. [2022-07-21 17:55:22,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:55:22,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-21 17:55:22,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:22,681 INFO L225 Difference]: With dead ends: 867 [2022-07-21 17:55:22,681 INFO L226 Difference]: Without dead ends: 867 [2022-07-21 17:55:22,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:55:22,682 INFO L413 NwaCegarLoop]: 679 mSDtfsCounter, 601 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:22,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 864 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:55:22,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2022-07-21 17:55:22,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 839. [2022-07-21 17:55:22,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 692 states have (on average 1.439306358381503) internal successors, (996), 695 states have internal predecessors, (996), 105 states have call successors, (105), 35 states have call predecessors, (105), 41 states have return successors, (127), 108 states have call predecessors, (127), 98 states have call successors, (127) [2022-07-21 17:55:22,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1228 transitions. [2022-07-21 17:55:22,716 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1228 transitions. Word has length 19 [2022-07-21 17:55:22,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:22,717 INFO L495 AbstractCegarLoop]: Abstraction has 839 states and 1228 transitions. [2022-07-21 17:55:22,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:22,717 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1228 transitions. [2022-07-21 17:55:22,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-21 17:55:22,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:22,718 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] [2022-07-21 17:55:22,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 17:55:22,719 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:22,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:22,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1868596178, now seen corresponding path program 1 times [2022-07-21 17:55:22,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:22,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886727403] [2022-07-21 17:55:22,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:22,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:22,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:22,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:22,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886727403] [2022-07-21 17:55:22,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886727403] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:22,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:22,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 17:55:22,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96662419] [2022-07-21 17:55:22,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:22,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:55:22,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:22,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:55:22,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:55:22,740 INFO L87 Difference]: Start difference. First operand 839 states and 1228 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:22,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:22,827 INFO L93 Difference]: Finished difference Result 1332 states and 2008 transitions. [2022-07-21 17:55:22,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:55:22,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-07-21 17:55:22,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:22,832 INFO L225 Difference]: With dead ends: 1332 [2022-07-21 17:55:22,832 INFO L226 Difference]: Without dead ends: 1332 [2022-07-21 17:55:22,832 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 [2022-07-21 17:55:22,833 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 336 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:22,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 1616 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:55:22,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2022-07-21 17:55:22,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1027. [2022-07-21 17:55:22,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 848 states have (on average 1.4375) internal successors, (1219), 849 states have internal predecessors, (1219), 122 states have call successors, (122), 47 states have call predecessors, (122), 56 states have return successors, (205), 130 states have call predecessors, (205), 115 states have call successors, (205) [2022-07-21 17:55:22,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1546 transitions. [2022-07-21 17:55:22,857 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1546 transitions. Word has length 21 [2022-07-21 17:55:22,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:22,857 INFO L495 AbstractCegarLoop]: Abstraction has 1027 states and 1546 transitions. [2022-07-21 17:55:22,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:22,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1546 transitions. [2022-07-21 17:55:22,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-21 17:55:22,858 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:22,858 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] [2022-07-21 17:55:22,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 17:55:22,858 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:22,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:22,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1853359414, now seen corresponding path program 1 times [2022-07-21 17:55:22,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:22,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675011647] [2022-07-21 17:55:22,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:22,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:22,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:22,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:22,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675011647] [2022-07-21 17:55:22,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675011647] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:22,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:22,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:55:22,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343861237] [2022-07-21 17:55:22,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:22,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 17:55:22,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:22,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 17:55:22,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 17:55:22,904 INFO L87 Difference]: Start difference. First operand 1027 states and 1546 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:23,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:23,174 INFO L93 Difference]: Finished difference Result 1060 states and 1579 transitions. [2022-07-21 17:55:23,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 17:55:23,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-07-21 17:55:23,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:23,178 INFO L225 Difference]: With dead ends: 1060 [2022-07-21 17:55:23,179 INFO L226 Difference]: Without dead ends: 1060 [2022-07-21 17:55:23,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:55:23,180 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 1036 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:23,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 854 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:23,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2022-07-21 17:55:23,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1009. [2022-07-21 17:55:23,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 833 states have (on average 1.4309723889555823) internal successors, (1192), 834 states have internal predecessors, (1192), 119 states have call successors, (119), 44 states have call predecessors, (119), 56 states have return successors, (199), 130 states have call predecessors, (199), 112 states have call successors, (199) [2022-07-21 17:55:23,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1510 transitions. [2022-07-21 17:55:23,201 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1510 transitions. Word has length 22 [2022-07-21 17:55:23,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:23,201 INFO L495 AbstractCegarLoop]: Abstraction has 1009 states and 1510 transitions. [2022-07-21 17:55:23,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:23,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1510 transitions. [2022-07-21 17:55:23,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-21 17:55:23,203 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:23,203 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] [2022-07-21 17:55:23,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 17:55:23,203 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:23,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:23,204 INFO L85 PathProgramCache]: Analyzing trace with hash -401986613, now seen corresponding path program 1 times [2022-07-21 17:55:23,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:23,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365683315] [2022-07-21 17:55:23,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:23,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:23,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:23,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:23,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365683315] [2022-07-21 17:55:23,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365683315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:23,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:23,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 17:55:23,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502333599] [2022-07-21 17:55:23,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:23,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:55:23,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:23,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:55:23,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:55:23,242 INFO L87 Difference]: Start difference. First operand 1009 states and 1510 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:23,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:23,279 INFO L93 Difference]: Finished difference Result 1008 states and 1507 transitions. [2022-07-21 17:55:23,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:55:23,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-07-21 17:55:23,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:23,283 INFO L225 Difference]: With dead ends: 1008 [2022-07-21 17:55:23,283 INFO L226 Difference]: Without dead ends: 1008 [2022-07-21 17:55:23,283 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 [2022-07-21 17:55:23,285 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 22 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:23,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1248 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:55:23,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2022-07-21 17:55:23,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 1008. [2022-07-21 17:55:23,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 833 states have (on average 1.4285714285714286) internal successors, (1190), 833 states have internal predecessors, (1190), 118 states have call successors, (118), 44 states have call predecessors, (118), 56 states have return successors, (199), 130 states have call predecessors, (199), 112 states have call successors, (199) [2022-07-21 17:55:23,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1507 transitions. [2022-07-21 17:55:23,312 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1507 transitions. Word has length 23 [2022-07-21 17:55:23,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:23,312 INFO L495 AbstractCegarLoop]: Abstraction has 1008 states and 1507 transitions. [2022-07-21 17:55:23,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:23,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1507 transitions. [2022-07-21 17:55:23,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-21 17:55:23,314 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:23,314 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] [2022-07-21 17:55:23,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 17:55:23,314 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:23,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:23,315 INFO L85 PathProgramCache]: Analyzing trace with hash -411805955, now seen corresponding path program 1 times [2022-07-21 17:55:23,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:23,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714478671] [2022-07-21 17:55:23,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:23,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:23,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 17:55:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:23,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:23,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:23,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714478671] [2022-07-21 17:55:23,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714478671] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:23,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:23,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:55:23,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309967681] [2022-07-21 17:55:23,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:23,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 17:55:23,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:23,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 17:55:23,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 17:55:23,359 INFO L87 Difference]: Start difference. First operand 1008 states and 1507 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:23,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:23,539 INFO L93 Difference]: Finished difference Result 1305 states and 1930 transitions. [2022-07-21 17:55:23,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:55:23,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-07-21 17:55:23,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:23,543 INFO L225 Difference]: With dead ends: 1305 [2022-07-21 17:55:23,543 INFO L226 Difference]: Without dead ends: 1305 [2022-07-21 17:55:23,544 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 [2022-07-21 17:55:23,544 INFO L413 NwaCegarLoop]: 725 mSDtfsCounter, 768 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:23,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1390 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:23,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2022-07-21 17:55:23,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1065. [2022-07-21 17:55:23,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 881 states have (on average 1.41316685584563) internal successors, (1245), 886 states have internal predecessors, (1245), 115 states have call successors, (115), 49 states have call predecessors, (115), 68 states have return successors, (178), 129 states have call predecessors, (178), 109 states have call successors, (178) [2022-07-21 17:55:23,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1538 transitions. [2022-07-21 17:55:23,567 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1538 transitions. Word has length 36 [2022-07-21 17:55:23,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:23,568 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1538 transitions. [2022-07-21 17:55:23,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:23,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1538 transitions. [2022-07-21 17:55:23,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-21 17:55:23,570 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:23,570 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] [2022-07-21 17:55:23,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 17:55:23,570 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:23,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:23,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2014058946, now seen corresponding path program 1 times [2022-07-21 17:55:23,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:23,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127325237] [2022-07-21 17:55:23,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:23,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:23,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 17:55:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:23,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:23,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:23,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127325237] [2022-07-21 17:55:23,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127325237] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:23,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:23,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:55:23,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493680234] [2022-07-21 17:55:23,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:23,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 17:55:23,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:23,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 17:55:23,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 17:55:23,597 INFO L87 Difference]: Start difference. First operand 1065 states and 1538 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:23,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:23,759 INFO L93 Difference]: Finished difference Result 836 states and 1213 transitions. [2022-07-21 17:55:23,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:55:23,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-07-21 17:55:23,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:23,762 INFO L225 Difference]: With dead ends: 836 [2022-07-21 17:55:23,763 INFO L226 Difference]: Without dead ends: 836 [2022-07-21 17:55:23,763 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 [2022-07-21 17:55:23,763 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 248 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:23,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 1763 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:55:23,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-07-21 17:55:23,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 797. [2022-07-21 17:55:23,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 659 states have (on average 1.4142640364188164) internal successors, (932), 666 states have internal predecessors, (932), 93 states have call successors, (93), 33 states have call predecessors, (93), 44 states have return successors, (121), 97 states have call predecessors, (121), 87 states have call successors, (121) [2022-07-21 17:55:23,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1146 transitions. [2022-07-21 17:55:23,778 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1146 transitions. Word has length 35 [2022-07-21 17:55:23,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:23,778 INFO L495 AbstractCegarLoop]: Abstraction has 797 states and 1146 transitions. [2022-07-21 17:55:23,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:23,778 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1146 transitions. [2022-07-21 17:55:23,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-21 17:55:23,779 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:23,780 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] [2022-07-21 17:55:23,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 17:55:23,780 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:23,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:23,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1008894196, now seen corresponding path program 1 times [2022-07-21 17:55:23,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:23,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060668200] [2022-07-21 17:55:23,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:23,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:23,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:23,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:23,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060668200] [2022-07-21 17:55:23,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060668200] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:23,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:23,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:55:23,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756836432] [2022-07-21 17:55:23,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:23,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 17:55:23,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:23,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 17:55:23,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 17:55:23,802 INFO L87 Difference]: Start difference. First operand 797 states and 1146 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:23,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:23,963 INFO L93 Difference]: Finished difference Result 813 states and 1164 transitions. [2022-07-21 17:55:23,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 17:55:23,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-07-21 17:55:23,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:23,966 INFO L225 Difference]: With dead ends: 813 [2022-07-21 17:55:23,966 INFO L226 Difference]: Without dead ends: 813 [2022-07-21 17:55:23,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:55:23,967 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 690 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:23,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 1099 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:55:23,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2022-07-21 17:55:23,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 797. [2022-07-21 17:55:23,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 659 states have (on average 1.4112291350531108) internal successors, (930), 666 states have internal predecessors, (930), 93 states have call successors, (93), 33 states have call predecessors, (93), 44 states have return successors, (121), 97 states have call predecessors, (121), 87 states have call successors, (121) [2022-07-21 17:55:23,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1144 transitions. [2022-07-21 17:55:23,979 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1144 transitions. Word has length 32 [2022-07-21 17:55:23,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:23,980 INFO L495 AbstractCegarLoop]: Abstraction has 797 states and 1144 transitions. [2022-07-21 17:55:23,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:23,980 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1144 transitions. [2022-07-21 17:55:23,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-21 17:55:23,981 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:23,981 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] [2022-07-21 17:55:23,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 17:55:23,982 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:23,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:23,982 INFO L85 PathProgramCache]: Analyzing trace with hash -509252101, now seen corresponding path program 1 times [2022-07-21 17:55:23,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:23,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903351448] [2022-07-21 17:55:23,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:23,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:24,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 17:55:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:24,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:24,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:24,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903351448] [2022-07-21 17:55:24,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903351448] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:24,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:24,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 17:55:24,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110754431] [2022-07-21 17:55:24,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:24,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:55:24,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:24,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:55:24,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:55:24,014 INFO L87 Difference]: Start difference. First operand 797 states and 1144 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:24,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:24,386 INFO L93 Difference]: Finished difference Result 706 states and 1022 transitions. [2022-07-21 17:55:24,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:55:24,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-07-21 17:55:24,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:24,389 INFO L225 Difference]: With dead ends: 706 [2022-07-21 17:55:24,389 INFO L226 Difference]: Without dead ends: 706 [2022-07-21 17:55:24,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:55:24,390 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 843 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:24,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 1645 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 17:55:24,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-07-21 17:55:24,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 665. [2022-07-21 17:55:24,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 548 states have (on average 1.4087591240875912) internal successors, (772), 554 states have internal predecessors, (772), 85 states have call successors, (85), 26 states have call predecessors, (85), 31 states have return successors, (96), 84 states have call predecessors, (96), 79 states have call successors, (96) [2022-07-21 17:55:24,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 953 transitions. [2022-07-21 17:55:24,401 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 953 transitions. Word has length 36 [2022-07-21 17:55:24,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:24,401 INFO L495 AbstractCegarLoop]: Abstraction has 665 states and 953 transitions. [2022-07-21 17:55:24,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:24,402 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 953 transitions. [2022-07-21 17:55:24,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-21 17:55:24,403 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:24,403 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] [2022-07-21 17:55:24,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 17:55:24,403 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:24,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:24,404 INFO L85 PathProgramCache]: Analyzing trace with hash 138801863, now seen corresponding path program 1 times [2022-07-21 17:55:24,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:24,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158306690] [2022-07-21 17:55:24,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:24,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:24,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:24,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:24,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158306690] [2022-07-21 17:55:24,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158306690] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:24,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:24,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 17:55:24,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312143733] [2022-07-21 17:55:24,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:24,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:55:24,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:24,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:55:24,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:55:24,423 INFO L87 Difference]: Start difference. First operand 665 states and 953 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:24,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:24,468 INFO L93 Difference]: Finished difference Result 811 states and 1155 transitions. [2022-07-21 17:55:24,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:55:24,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-07-21 17:55:24,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:24,471 INFO L225 Difference]: With dead ends: 811 [2022-07-21 17:55:24,471 INFO L226 Difference]: Without dead ends: 811 [2022-07-21 17:55:24,471 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 [2022-07-21 17:55:24,472 INFO L413 NwaCegarLoop]: 771 mSDtfsCounter, 132 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:24,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 1384 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:55:24,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2022-07-21 17:55:24,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 713. [2022-07-21 17:55:24,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 592 states have (on average 1.385135135135135) internal successors, (820), 591 states have internal predecessors, (820), 85 states have call successors, (85), 26 states have call predecessors, (85), 35 states have return successors, (107), 95 states have call predecessors, (107), 79 states have call successors, (107) [2022-07-21 17:55:24,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1012 transitions. [2022-07-21 17:55:24,483 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1012 transitions. Word has length 34 [2022-07-21 17:55:24,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:24,484 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 1012 transitions. [2022-07-21 17:55:24,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:24,484 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1012 transitions. [2022-07-21 17:55:24,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-21 17:55:24,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:24,485 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] [2022-07-21 17:55:24,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 17:55:24,486 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:24,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:24,486 INFO L85 PathProgramCache]: Analyzing trace with hash -298326267, now seen corresponding path program 1 times [2022-07-21 17:55:24,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:24,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868544329] [2022-07-21 17:55:24,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:24,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:24,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:24,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:24,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868544329] [2022-07-21 17:55:24,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868544329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:24,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:24,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:55:24,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881566236] [2022-07-21 17:55:24,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:24,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 17:55:24,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:24,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 17:55:24,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 17:55:24,519 INFO L87 Difference]: Start difference. First operand 713 states and 1012 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:24,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:24,688 INFO L93 Difference]: Finished difference Result 694 states and 982 transitions. [2022-07-21 17:55:24,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 17:55:24,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-07-21 17:55:24,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:24,690 INFO L225 Difference]: With dead ends: 694 [2022-07-21 17:55:24,690 INFO L226 Difference]: Without dead ends: 694 [2022-07-21 17:55:24,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:55:24,691 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 670 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:24,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 1099 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:24,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-07-21 17:55:24,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 694. [2022-07-21 17:55:24,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 575 states have (on average 1.3895652173913045) internal successors, (799), 581 states have internal predecessors, (799), 85 states have call successors, (85), 26 states have call predecessors, (85), 33 states have return successors, (98), 86 states have call predecessors, (98), 79 states have call successors, (98) [2022-07-21 17:55:24,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 982 transitions. [2022-07-21 17:55:24,701 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 982 transitions. Word has length 34 [2022-07-21 17:55:24,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:24,702 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 982 transitions. [2022-07-21 17:55:24,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:24,702 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 982 transitions. [2022-07-21 17:55:24,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-21 17:55:24,703 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:24,703 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] [2022-07-21 17:55:24,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 17:55:24,704 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:24,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:24,704 INFO L85 PathProgramCache]: Analyzing trace with hash 452395465, now seen corresponding path program 1 times [2022-07-21 17:55:24,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:24,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672426607] [2022-07-21 17:55:24,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:24,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:24,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:24,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:24,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672426607] [2022-07-21 17:55:24,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672426607] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:24,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:24,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:55:24,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938817767] [2022-07-21 17:55:24,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:24,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 17:55:24,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:24,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 17:55:24,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 17:55:24,734 INFO L87 Difference]: Start difference. First operand 694 states and 982 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:24,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:24,941 INFO L93 Difference]: Finished difference Result 788 states and 1120 transitions. [2022-07-21 17:55:24,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 17:55:24,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-07-21 17:55:24,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:24,944 INFO L225 Difference]: With dead ends: 788 [2022-07-21 17:55:24,944 INFO L226 Difference]: Without dead ends: 788 [2022-07-21 17:55:24,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:55:24,945 INFO L413 NwaCegarLoop]: 736 mSDtfsCounter, 742 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:24,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 1192 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:24,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-07-21 17:55:24,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 696. [2022-07-21 17:55:24,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 577 states have (on average 1.3882149046793761) internal successors, (801), 583 states have internal predecessors, (801), 85 states have call successors, (85), 26 states have call predecessors, (85), 33 states have return successors, (98), 86 states have call predecessors, (98), 79 states have call successors, (98) [2022-07-21 17:55:24,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 984 transitions. [2022-07-21 17:55:24,955 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 984 transitions. Word has length 35 [2022-07-21 17:55:24,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:24,955 INFO L495 AbstractCegarLoop]: Abstraction has 696 states and 984 transitions. [2022-07-21 17:55:24,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:24,956 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 984 transitions. [2022-07-21 17:55:24,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-21 17:55:24,957 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:24,957 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] [2022-07-21 17:55:24,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 17:55:24,957 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:24,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:24,958 INFO L85 PathProgramCache]: Analyzing trace with hash 452672295, now seen corresponding path program 1 times [2022-07-21 17:55:24,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:24,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438399891] [2022-07-21 17:55:24,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:24,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:24,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:24,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:24,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438399891] [2022-07-21 17:55:24,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438399891] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:24,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:24,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:55:24,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400739205] [2022-07-21 17:55:24,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:24,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:55:24,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:24,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:55:24,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:55:24,984 INFO L87 Difference]: Start difference. First operand 696 states and 984 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:25,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:25,024 INFO L93 Difference]: Finished difference Result 706 states and 994 transitions. [2022-07-21 17:55:25,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:55:25,024 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-07-21 17:55:25,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:25,026 INFO L225 Difference]: With dead ends: 706 [2022-07-21 17:55:25,026 INFO L226 Difference]: Without dead ends: 679 [2022-07-21 17:55:25,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:55:25,027 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 38 mSDsluCounter, 2545 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3193 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:25,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3193 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:55:25,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-07-21 17:55:25,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 679. [2022-07-21 17:55:25,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 560 states have (on average 1.394642857142857) internal successors, (781), 566 states have internal predecessors, (781), 85 states have call successors, (85), 26 states have call predecessors, (85), 33 states have return successors, (98), 86 states have call predecessors, (98), 79 states have call successors, (98) [2022-07-21 17:55:25,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 964 transitions. [2022-07-21 17:55:25,037 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 964 transitions. Word has length 35 [2022-07-21 17:55:25,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:25,037 INFO L495 AbstractCegarLoop]: Abstraction has 679 states and 964 transitions. [2022-07-21 17:55:25,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:25,038 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 964 transitions. [2022-07-21 17:55:25,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-21 17:55:25,039 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:25,039 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] [2022-07-21 17:55:25,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 17:55:25,039 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:25,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:25,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1898283434, now seen corresponding path program 1 times [2022-07-21 17:55:25,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:25,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939004576] [2022-07-21 17:55:25,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:25,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:25,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 17:55:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:25,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:25,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:25,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939004576] [2022-07-21 17:55:25,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939004576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:25,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:25,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:55:25,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68593800] [2022-07-21 17:55:25,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:25,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 17:55:25,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:25,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 17:55:25,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 17:55:25,063 INFO L87 Difference]: Start difference. First operand 679 states and 964 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:25,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:25,220 INFO L93 Difference]: Finished difference Result 712 states and 1022 transitions. [2022-07-21 17:55:25,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:55:25,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-07-21 17:55:25,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:25,223 INFO L225 Difference]: With dead ends: 712 [2022-07-21 17:55:25,223 INFO L226 Difference]: Without dead ends: 710 [2022-07-21 17:55:25,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:55:25,223 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 150 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:25,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1540 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:55:25,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-07-21 17:55:25,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 692. [2022-07-21 17:55:25,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 573 states have (on average 1.3891797556719023) internal successors, (796), 579 states have internal predecessors, (796), 85 states have call successors, (85), 26 states have call predecessors, (85), 33 states have return successors, (98), 86 states have call predecessors, (98), 79 states have call successors, (98) [2022-07-21 17:55:25,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 979 transitions. [2022-07-21 17:55:25,234 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 979 transitions. Word has length 37 [2022-07-21 17:55:25,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:25,234 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 979 transitions. [2022-07-21 17:55:25,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:25,235 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 979 transitions. [2022-07-21 17:55:25,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-21 17:55:25,236 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:25,236 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] [2022-07-21 17:55:25,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 17:55:25,236 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:25,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:25,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1374369595, now seen corresponding path program 1 times [2022-07-21 17:55:25,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:25,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845203327] [2022-07-21 17:55:25,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:25,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:25,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 17:55:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:25,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:25,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:25,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845203327] [2022-07-21 17:55:25,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845203327] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:25,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:25,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:55:25,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82938592] [2022-07-21 17:55:25,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:25,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:55:25,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:25,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:55:25,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:55:25,287 INFO L87 Difference]: Start difference. First operand 692 states and 979 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:25,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:25,608 INFO L93 Difference]: Finished difference Result 710 states and 1019 transitions. [2022-07-21 17:55:25,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:55:25,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-07-21 17:55:25,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:25,611 INFO L225 Difference]: With dead ends: 710 [2022-07-21 17:55:25,611 INFO L226 Difference]: Without dead ends: 710 [2022-07-21 17:55:25,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:55:25,612 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 745 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:25,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 1870 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 17:55:25,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-07-21 17:55:25,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 692. [2022-07-21 17:55:25,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 573 states have (on average 1.387434554973822) internal successors, (795), 579 states have internal predecessors, (795), 85 states have call successors, (85), 26 states have call predecessors, (85), 33 states have return successors, (98), 86 states have call predecessors, (98), 79 states have call successors, (98) [2022-07-21 17:55:25,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 978 transitions. [2022-07-21 17:55:25,622 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 978 transitions. Word has length 39 [2022-07-21 17:55:25,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:25,623 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 978 transitions. [2022-07-21 17:55:25,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:25,623 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 978 transitions. [2022-07-21 17:55:25,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-21 17:55:25,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:25,624 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] [2022-07-21 17:55:25,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 17:55:25,624 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:25,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:25,625 INFO L85 PathProgramCache]: Analyzing trace with hash -31152669, now seen corresponding path program 1 times [2022-07-21 17:55:25,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:25,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895138926] [2022-07-21 17:55:25,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:25,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:25,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 17:55:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:25,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:25,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:25,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895138926] [2022-07-21 17:55:25,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895138926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:25,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:25,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 17:55:25,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204504477] [2022-07-21 17:55:25,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:25,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 17:55:25,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:25,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 17:55:25,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:55:25,665 INFO L87 Difference]: Start difference. First operand 692 states and 978 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:25,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:25,929 INFO L93 Difference]: Finished difference Result 728 states and 1040 transitions. [2022-07-21 17:55:25,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:55:25,929 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-07-21 17:55:25,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:25,931 INFO L225 Difference]: With dead ends: 728 [2022-07-21 17:55:25,931 INFO L226 Difference]: Without dead ends: 699 [2022-07-21 17:55:25,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-07-21 17:55:25,932 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 158 mSDsluCounter, 3340 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 3958 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:25,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 3958 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:25,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-07-21 17:55:25,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 683. [2022-07-21 17:55:25,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 566 states have (on average 1.3692579505300353) internal successors, (775), 572 states have internal predecessors, (775), 83 states have call successors, (83), 26 states have call predecessors, (83), 33 states have return successors, (96), 84 states have call predecessors, (96), 77 states have call successors, (96) [2022-07-21 17:55:25,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 954 transitions. [2022-07-21 17:55:25,944 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 954 transitions. Word has length 40 [2022-07-21 17:55:25,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:25,944 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 954 transitions. [2022-07-21 17:55:25,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:25,945 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 954 transitions. [2022-07-21 17:55:25,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-21 17:55:25,946 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:25,946 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] [2022-07-21 17:55:25,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 17:55:25,946 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:25,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:25,947 INFO L85 PathProgramCache]: Analyzing trace with hash 128291846, now seen corresponding path program 1 times [2022-07-21 17:55:25,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:25,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892219436] [2022-07-21 17:55:25,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:25,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:25,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 17:55:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:25,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 17:55:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:25,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:25,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:25,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892219436] [2022-07-21 17:55:25,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892219436] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:25,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:25,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 17:55:25,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139395395] [2022-07-21 17:55:25,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:25,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:55:25,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:25,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:55:25,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:55:25,972 INFO L87 Difference]: Start difference. First operand 683 states and 954 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:55:26,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:26,290 INFO L93 Difference]: Finished difference Result 678 states and 964 transitions. [2022-07-21 17:55:26,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:55:26,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2022-07-21 17:55:26,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:26,293 INFO L225 Difference]: With dead ends: 678 [2022-07-21 17:55:26,293 INFO L226 Difference]: Without dead ends: 678 [2022-07-21 17:55:26,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:55:26,294 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 252 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:26,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 1790 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 17:55:26,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2022-07-21 17:55:26,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 662. [2022-07-21 17:55:26,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 548 states have (on average 1.364963503649635) internal successors, (748), 553 states have internal predecessors, (748), 82 states have call successors, (82), 26 states have call predecessors, (82), 31 states have return successors, (94), 82 states have call predecessors, (94), 77 states have call successors, (94) [2022-07-21 17:55:26,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 924 transitions. [2022-07-21 17:55:26,305 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 924 transitions. Word has length 43 [2022-07-21 17:55:26,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:26,306 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 924 transitions. [2022-07-21 17:55:26,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:55:26,306 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 924 transitions. [2022-07-21 17:55:26,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-21 17:55:26,307 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:26,308 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] [2022-07-21 17:55:26,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 17:55:26,308 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:26,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:26,308 INFO L85 PathProgramCache]: Analyzing trace with hash -37716100, now seen corresponding path program 1 times [2022-07-21 17:55:26,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:26,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110200292] [2022-07-21 17:55:26,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:26,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:26,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 17:55:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:26,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:26,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:26,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:26,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110200292] [2022-07-21 17:55:26,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110200292] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:26,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:26,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 17:55:26,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880843039] [2022-07-21 17:55:26,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:26,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 17:55:26,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:26,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 17:55:26,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 17:55:26,404 INFO L87 Difference]: Start difference. First operand 662 states and 924 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:55:26,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:26,977 INFO L93 Difference]: Finished difference Result 689 states and 975 transitions. [2022-07-21 17:55:26,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 17:55:26,979 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2022-07-21 17:55:26,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:26,981 INFO L225 Difference]: With dead ends: 689 [2022-07-21 17:55:26,981 INFO L226 Difference]: Without dead ends: 676 [2022-07-21 17:55:26,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-07-21 17:55:26,982 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 98 mSDsluCounter, 3829 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 4437 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:26,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 4437 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 17:55:26,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2022-07-21 17:55:26,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 660. [2022-07-21 17:55:26,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 547 states have (on average 1.363802559414991) internal successors, (746), 552 states have internal predecessors, (746), 81 states have call successors, (81), 26 states have call predecessors, (81), 31 states have return successors, (93), 81 states have call predecessors, (93), 76 states have call successors, (93) [2022-07-21 17:55:26,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 920 transitions. [2022-07-21 17:55:26,992 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 920 transitions. Word has length 44 [2022-07-21 17:55:26,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:26,992 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 920 transitions. [2022-07-21 17:55:26,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:55:26,992 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 920 transitions. [2022-07-21 17:55:26,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-21 17:55:26,994 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:26,994 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] [2022-07-21 17:55:26,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 17:55:26,994 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:26,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:26,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1983772567, now seen corresponding path program 1 times [2022-07-21 17:55:26,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:26,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736188830] [2022-07-21 17:55:26,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:26,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:27,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 17:55:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:27,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:27,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:27,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:27,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736188830] [2022-07-21 17:55:27,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736188830] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:27,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:27,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 17:55:27,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632949] [2022-07-21 17:55:27,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:27,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 17:55:27,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:27,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 17:55:27,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 17:55:27,081 INFO L87 Difference]: Start difference. First operand 660 states and 920 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:55:27,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:27,660 INFO L93 Difference]: Finished difference Result 686 states and 970 transitions. [2022-07-21 17:55:27,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 17:55:27,661 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2022-07-21 17:55:27,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:27,663 INFO L225 Difference]: With dead ends: 686 [2022-07-21 17:55:27,663 INFO L226 Difference]: Without dead ends: 673 [2022-07-21 17:55:27,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-07-21 17:55:27,664 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 98 mSDsluCounter, 3786 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 4386 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:27,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 4386 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 17:55:27,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-07-21 17:55:27,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 657. [2022-07-21 17:55:27,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 545 states have (on average 1.363302752293578) internal successors, (743), 550 states have internal predecessors, (743), 80 states have call successors, (80), 26 states have call predecessors, (80), 31 states have return successors, (92), 80 states have call predecessors, (92), 75 states have call successors, (92) [2022-07-21 17:55:27,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 915 transitions. [2022-07-21 17:55:27,673 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 915 transitions. Word has length 43 [2022-07-21 17:55:27,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:27,673 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 915 transitions. [2022-07-21 17:55:27,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:55:27,674 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 915 transitions. [2022-07-21 17:55:27,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-21 17:55:27,675 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:27,675 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] [2022-07-21 17:55:27,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 17:55:27,675 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:27,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:27,676 INFO L85 PathProgramCache]: Analyzing trace with hash 724634571, now seen corresponding path program 1 times [2022-07-21 17:55:27,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:27,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225064574] [2022-07-21 17:55:27,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:27,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:27,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 17:55:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:27,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:27,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:27,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:27,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225064574] [2022-07-21 17:55:27,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225064574] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:27,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:27,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 17:55:27,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786170322] [2022-07-21 17:55:27,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:27,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 17:55:27,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:27,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 17:55:27,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-21 17:55:27,761 INFO L87 Difference]: Start difference. First operand 657 states and 915 transitions. Second operand has 13 states, 12 states have (on average 3.5) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:28,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:28,497 INFO L93 Difference]: Finished difference Result 706 states and 990 transitions. [2022-07-21 17:55:28,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 17:55:28,498 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2022-07-21 17:55:28,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:28,500 INFO L225 Difference]: With dead ends: 706 [2022-07-21 17:55:28,500 INFO L226 Difference]: Without dead ends: 689 [2022-07-21 17:55:28,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-07-21 17:55:28,501 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 244 mSDsluCounter, 4512 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 5102 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:28,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 5102 Invalid, 1714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 17:55:28,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-07-21 17:55:28,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 655. [2022-07-21 17:55:28,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 544 states have (on average 1.3621323529411764) internal successors, (741), 549 states have internal predecessors, (741), 79 states have call successors, (79), 26 states have call predecessors, (79), 31 states have return successors, (91), 79 states have call predecessors, (91), 74 states have call successors, (91) [2022-07-21 17:55:28,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 911 transitions. [2022-07-21 17:55:28,510 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 911 transitions. Word has length 47 [2022-07-21 17:55:28,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:28,511 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 911 transitions. [2022-07-21 17:55:28,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:28,511 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 911 transitions. [2022-07-21 17:55:28,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-21 17:55:28,512 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:28,512 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:28,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 17:55:28,513 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:28,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:28,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1637865694, now seen corresponding path program 1 times [2022-07-21 17:55:28,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:28,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622540960] [2022-07-21 17:55:28,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:28,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:28,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 17:55:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:28,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:28,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:28,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:28,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622540960] [2022-07-21 17:55:28,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622540960] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:28,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:28,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 17:55:28,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252499743] [2022-07-21 17:55:28,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:28,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 17:55:28,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:28,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 17:55:28,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-21 17:55:28,594 INFO L87 Difference]: Start difference. First operand 655 states and 911 transitions. Second operand has 13 states, 12 states have (on average 3.25) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:29,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:29,283 INFO L93 Difference]: Finished difference Result 704 states and 986 transitions. [2022-07-21 17:55:29,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 17:55:29,283 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.25) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-07-21 17:55:29,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:29,285 INFO L225 Difference]: With dead ends: 704 [2022-07-21 17:55:29,285 INFO L226 Difference]: Without dead ends: 686 [2022-07-21 17:55:29,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-07-21 17:55:29,286 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 259 mSDsluCounter, 4050 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 4624 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:29,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 4624 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 17:55:29,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-07-21 17:55:29,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 654. [2022-07-21 17:55:29,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 543 states have (on average 1.3443830570902393) internal successors, (730), 548 states have internal predecessors, (730), 79 states have call successors, (79), 26 states have call predecessors, (79), 31 states have return successors, (91), 79 states have call predecessors, (91), 74 states have call successors, (91) [2022-07-21 17:55:29,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 900 transitions. [2022-07-21 17:55:29,296 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 900 transitions. Word has length 44 [2022-07-21 17:55:29,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:29,296 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 900 transitions. [2022-07-21 17:55:29,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.25) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:29,297 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 900 transitions. [2022-07-21 17:55:29,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-21 17:55:29,298 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:29,298 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] [2022-07-21 17:55:29,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 17:55:29,298 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:29,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:29,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1376070278, now seen corresponding path program 1 times [2022-07-21 17:55:29,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:29,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900978278] [2022-07-21 17:55:29,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:29,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:29,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 17:55:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:29,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:29,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:29,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900978278] [2022-07-21 17:55:29,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900978278] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:29,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:29,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 17:55:29,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469536507] [2022-07-21 17:55:29,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:29,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 17:55:29,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:29,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 17:55:29,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:55:29,346 INFO L87 Difference]: Start difference. First operand 654 states and 900 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:29,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:29,643 INFO L93 Difference]: Finished difference Result 700 states and 969 transitions. [2022-07-21 17:55:29,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 17:55:29,643 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-07-21 17:55:29,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:29,645 INFO L225 Difference]: With dead ends: 700 [2022-07-21 17:55:29,646 INFO L226 Difference]: Without dead ends: 658 [2022-07-21 17:55:29,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-07-21 17:55:29,646 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 235 mSDsluCounter, 3083 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 3665 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:29,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 3665 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:29,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-07-21 17:55:29,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 642. [2022-07-21 17:55:29,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 534 states have (on average 1.3389513108614233) internal successors, (715), 539 states have internal predecessors, (715), 76 states have call successors, (76), 26 states have call predecessors, (76), 31 states have return successors, (88), 76 states have call predecessors, (88), 71 states have call successors, (88) [2022-07-21 17:55:29,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 879 transitions. [2022-07-21 17:55:29,656 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 879 transitions. Word has length 44 [2022-07-21 17:55:29,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:29,656 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 879 transitions. [2022-07-21 17:55:29,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:29,656 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 879 transitions. [2022-07-21 17:55:29,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-21 17:55:29,657 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:29,657 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] [2022-07-21 17:55:29,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 17:55:29,658 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:29,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:29,658 INFO L85 PathProgramCache]: Analyzing trace with hash -766417177, now seen corresponding path program 1 times [2022-07-21 17:55:29,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:29,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969151310] [2022-07-21 17:55:29,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:29,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:29,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 17:55:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:29,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 17:55:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:29,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:29,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969151310] [2022-07-21 17:55:29,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969151310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:29,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:29,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:55:29,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326968103] [2022-07-21 17:55:29,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:29,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:55:29,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:29,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:55:29,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:55:29,687 INFO L87 Difference]: Start difference. First operand 642 states and 879 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:29,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:29,959 INFO L93 Difference]: Finished difference Result 693 states and 983 transitions. [2022-07-21 17:55:29,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:55:29,959 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-21 17:55:29,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:29,961 INFO L225 Difference]: With dead ends: 693 [2022-07-21 17:55:29,962 INFO L226 Difference]: Without dead ends: 693 [2022-07-21 17:55:29,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:55:29,962 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 134 mSDsluCounter, 1653 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:29,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 2188 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:29,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2022-07-21 17:55:29,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 649. [2022-07-21 17:55:29,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 539 states have (on average 1.339517625231911) internal successors, (722), 545 states have internal predecessors, (722), 77 states have call successors, (77), 26 states have call predecessors, (77), 32 states have return successors, (95), 77 states have call predecessors, (95), 72 states have call successors, (95) [2022-07-21 17:55:29,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 894 transitions. [2022-07-21 17:55:29,972 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 894 transitions. Word has length 45 [2022-07-21 17:55:29,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:29,972 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 894 transitions. [2022-07-21 17:55:29,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:29,973 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 894 transitions. [2022-07-21 17:55:29,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-21 17:55:29,974 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:29,974 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] [2022-07-21 17:55:29,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-21 17:55:29,974 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:29,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:29,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1275890267, now seen corresponding path program 1 times [2022-07-21 17:55:29,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:29,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068422533] [2022-07-21 17:55:29,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:29,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:30,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 17:55:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:30,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 17:55:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:30,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:30,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:30,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068422533] [2022-07-21 17:55:30,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068422533] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:30,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:30,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 17:55:30,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873563445] [2022-07-21 17:55:30,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:30,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 17:55:30,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:30,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 17:55:30,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:55:30,021 INFO L87 Difference]: Start difference. First operand 649 states and 894 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:30,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:30,347 INFO L93 Difference]: Finished difference Result 684 states and 959 transitions. [2022-07-21 17:55:30,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 17:55:30,347 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-21 17:55:30,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:30,350 INFO L225 Difference]: With dead ends: 684 [2022-07-21 17:55:30,350 INFO L226 Difference]: Without dead ends: 667 [2022-07-21 17:55:30,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-07-21 17:55:30,350 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 245 mSDsluCounter, 2866 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 3430 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:30,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 3430 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 17:55:30,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-07-21 17:55:30,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 647. [2022-07-21 17:55:30,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 538 states have (on average 1.338289962825279) internal successors, (720), 544 states have internal predecessors, (720), 76 states have call successors, (76), 26 states have call predecessors, (76), 32 states have return successors, (94), 76 states have call predecessors, (94), 71 states have call successors, (94) [2022-07-21 17:55:30,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 890 transitions. [2022-07-21 17:55:30,360 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 890 transitions. Word has length 45 [2022-07-21 17:55:30,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:30,360 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 890 transitions. [2022-07-21 17:55:30,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:30,360 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 890 transitions. [2022-07-21 17:55:30,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-21 17:55:30,361 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:30,362 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] [2022-07-21 17:55:30,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-21 17:55:30,362 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:30,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:30,362 INFO L85 PathProgramCache]: Analyzing trace with hash -499982008, now seen corresponding path program 1 times [2022-07-21 17:55:30,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:30,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379666205] [2022-07-21 17:55:30,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:30,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:30,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 17:55:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:30,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:30,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:30,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379666205] [2022-07-21 17:55:30,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379666205] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:30,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:30,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 17:55:30,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25582093] [2022-07-21 17:55:30,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:30,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 17:55:30,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:30,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 17:55:30,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:55:30,397 INFO L87 Difference]: Start difference. First operand 647 states and 890 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:30,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:30,635 INFO L93 Difference]: Finished difference Result 691 states and 969 transitions. [2022-07-21 17:55:30,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:55:30,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2022-07-21 17:55:30,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:30,638 INFO L225 Difference]: With dead ends: 691 [2022-07-21 17:55:30,638 INFO L226 Difference]: Without dead ends: 659 [2022-07-21 17:55:30,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-07-21 17:55:30,638 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 166 mSDsluCounter, 2963 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 3513 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:30,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 3513 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:30,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-07-21 17:55:30,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 639. [2022-07-21 17:55:30,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 532 states have (on average 1.330827067669173) internal successors, (708), 538 states have internal predecessors, (708), 74 states have call successors, (74), 26 states have call predecessors, (74), 32 states have return successors, (92), 74 states have call predecessors, (92), 69 states have call successors, (92) [2022-07-21 17:55:30,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 874 transitions. [2022-07-21 17:55:30,648 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 874 transitions. Word has length 45 [2022-07-21 17:55:30,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:30,648 INFO L495 AbstractCegarLoop]: Abstraction has 639 states and 874 transitions. [2022-07-21 17:55:30,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:30,649 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 874 transitions. [2022-07-21 17:55:30,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-21 17:55:30,650 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:30,650 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] [2022-07-21 17:55:30,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-21 17:55:30,650 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:30,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:30,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1469834137, now seen corresponding path program 1 times [2022-07-21 17:55:30,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:30,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419642002] [2022-07-21 17:55:30,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:30,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:30,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 17:55:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:30,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:30,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:30,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:30,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419642002] [2022-07-21 17:55:30,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419642002] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:30,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:30,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 17:55:30,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252246422] [2022-07-21 17:55:30,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:30,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 17:55:30,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:30,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 17:55:30,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-21 17:55:30,745 INFO L87 Difference]: Start difference. First operand 639 states and 874 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:55:31,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:31,353 INFO L93 Difference]: Finished difference Result 671 states and 936 transitions. [2022-07-21 17:55:31,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 17:55:31,354 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2022-07-21 17:55:31,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:31,356 INFO L225 Difference]: With dead ends: 671 [2022-07-21 17:55:31,356 INFO L226 Difference]: Without dead ends: 656 [2022-07-21 17:55:31,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-21 17:55:31,357 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 110 mSDsluCounter, 3749 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 4290 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:31,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 4290 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 17:55:31,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-07-21 17:55:31,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 636. [2022-07-21 17:55:31,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 530 states have (on average 1.330188679245283) internal successors, (705), 536 states have internal predecessors, (705), 73 states have call successors, (73), 26 states have call predecessors, (73), 32 states have return successors, (91), 73 states have call predecessors, (91), 68 states have call successors, (91) [2022-07-21 17:55:31,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 869 transitions. [2022-07-21 17:55:31,383 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 869 transitions. Word has length 46 [2022-07-21 17:55:31,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:31,383 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 869 transitions. [2022-07-21 17:55:31,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:55:31,384 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 869 transitions. [2022-07-21 17:55:31,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-21 17:55:31,385 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:31,385 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] [2022-07-21 17:55:31,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-21 17:55:31,385 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:31,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:31,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1528127283, now seen corresponding path program 1 times [2022-07-21 17:55:31,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:31,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587635233] [2022-07-21 17:55:31,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:31,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:31,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 17:55:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:31,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 17:55:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:31,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:31,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:31,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587635233] [2022-07-21 17:55:31,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587635233] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:31,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:31,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:55:31,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495423176] [2022-07-21 17:55:31,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:31,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:55:31,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:31,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:55:31,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:55:31,440 INFO L87 Difference]: Start difference. First operand 636 states and 869 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:31,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:31,685 INFO L93 Difference]: Finished difference Result 668 states and 950 transitions. [2022-07-21 17:55:31,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:55:31,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2022-07-21 17:55:31,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:31,688 INFO L225 Difference]: With dead ends: 668 [2022-07-21 17:55:31,688 INFO L226 Difference]: Without dead ends: 666 [2022-07-21 17:55:31,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:55:31,689 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 102 mSDsluCounter, 2103 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 2632 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:31,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 2632 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:31,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-07-21 17:55:31,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 640. [2022-07-21 17:55:31,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 532 states have (on average 1.3289473684210527) internal successors, (707), 540 states have internal predecessors, (707), 73 states have call successors, (73), 26 states have call predecessors, (73), 34 states have return successors, (107), 73 states have call predecessors, (107), 68 states have call successors, (107) [2022-07-21 17:55:31,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 887 transitions. [2022-07-21 17:55:31,700 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 887 transitions. Word has length 46 [2022-07-21 17:55:31,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:31,700 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 887 transitions. [2022-07-21 17:55:31,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:31,701 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 887 transitions. [2022-07-21 17:55:31,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-21 17:55:31,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:31,702 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] [2022-07-21 17:55:31,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-21 17:55:31,703 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:31,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:31,703 INFO L85 PathProgramCache]: Analyzing trace with hash -250939957, now seen corresponding path program 1 times [2022-07-21 17:55:31,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:31,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594681299] [2022-07-21 17:55:31,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:31,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:31,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 17:55:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:31,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:31,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:31,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594681299] [2022-07-21 17:55:31,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594681299] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:31,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:31,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 17:55:31,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488918614] [2022-07-21 17:55:31,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:31,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 17:55:31,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:31,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 17:55:31,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-21 17:55:31,811 INFO L87 Difference]: Start difference. First operand 640 states and 887 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:55:32,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:32,479 INFO L93 Difference]: Finished difference Result 672 states and 949 transitions. [2022-07-21 17:55:32,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 17:55:32,480 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 54 [2022-07-21 17:55:32,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:32,482 INFO L225 Difference]: With dead ends: 672 [2022-07-21 17:55:32,482 INFO L226 Difference]: Without dead ends: 651 [2022-07-21 17:55:32,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-07-21 17:55:32,482 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 123 mSDsluCounter, 4143 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 4682 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:32,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 4682 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1354 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 17:55:32,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-07-21 17:55:32,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 631. [2022-07-21 17:55:32,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 525 states have (on average 1.3295238095238096) internal successors, (698), 533 states have internal predecessors, (698), 71 states have call successors, (71), 26 states have call predecessors, (71), 34 states have return successors, (105), 71 states have call predecessors, (105), 66 states have call successors, (105) [2022-07-21 17:55:32,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 874 transitions. [2022-07-21 17:55:32,491 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 874 transitions. Word has length 54 [2022-07-21 17:55:32,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:32,491 INFO L495 AbstractCegarLoop]: Abstraction has 631 states and 874 transitions. [2022-07-21 17:55:32,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:55:32,491 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 874 transitions. [2022-07-21 17:55:32,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-21 17:55:32,492 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:32,492 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] [2022-07-21 17:55:32,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-21 17:55:32,493 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:32,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:32,493 INFO L85 PathProgramCache]: Analyzing trace with hash 43125576, now seen corresponding path program 1 times [2022-07-21 17:55:32,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:32,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457873158] [2022-07-21 17:55:32,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:32,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:32,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 17:55:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:32,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:32,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:32,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:32,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457873158] [2022-07-21 17:55:32,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457873158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:32,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:32,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 17:55:32,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143567357] [2022-07-21 17:55:32,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:32,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 17:55:32,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:32,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 17:55:32,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-21 17:55:32,591 INFO L87 Difference]: Start difference. First operand 631 states and 874 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:55:33,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:33,238 INFO L93 Difference]: Finished difference Result 663 states and 935 transitions. [2022-07-21 17:55:33,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 17:55:33,238 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2022-07-21 17:55:33,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:33,241 INFO L225 Difference]: With dead ends: 663 [2022-07-21 17:55:33,241 INFO L226 Difference]: Without dead ends: 648 [2022-07-21 17:55:33,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-07-21 17:55:33,241 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 123 mSDsluCounter, 4027 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 4550 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:33,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 4550 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 17:55:33,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2022-07-21 17:55:33,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 628. [2022-07-21 17:55:33,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 523 states have (on average 1.3288718929254302) internal successors, (695), 531 states have internal predecessors, (695), 70 states have call successors, (70), 26 states have call predecessors, (70), 34 states have return successors, (104), 70 states have call predecessors, (104), 65 states have call successors, (104) [2022-07-21 17:55:33,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 869 transitions. [2022-07-21 17:55:33,250 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 869 transitions. Word has length 47 [2022-07-21 17:55:33,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:33,251 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 869 transitions. [2022-07-21 17:55:33,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:55:33,251 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 869 transitions. [2022-07-21 17:55:33,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-21 17:55:33,252 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:33,252 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] [2022-07-21 17:55:33,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-21 17:55:33,252 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:33,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:33,253 INFO L85 PathProgramCache]: Analyzing trace with hash 973189000, now seen corresponding path program 1 times [2022-07-21 17:55:33,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:33,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381298432] [2022-07-21 17:55:33,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:33,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:33,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 17:55:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:33,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 17:55:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:33,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 17:55:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:33,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:33,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:33,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381298432] [2022-07-21 17:55:33,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381298432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:33,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:33,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 17:55:33,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666341056] [2022-07-21 17:55:33,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:33,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:55:33,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:33,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:55:33,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:55:33,318 INFO L87 Difference]: Start difference. First operand 628 states and 869 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 17:55:33,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:33,553 INFO L93 Difference]: Finished difference Result 739 states and 1029 transitions. [2022-07-21 17:55:33,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:55:33,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2022-07-21 17:55:33,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:33,556 INFO L225 Difference]: With dead ends: 739 [2022-07-21 17:55:33,556 INFO L226 Difference]: Without dead ends: 739 [2022-07-21 17:55:33,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:55:33,557 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 315 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:33,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 1320 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:33,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-07-21 17:55:33,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 692. [2022-07-21 17:55:33,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 577 states have (on average 1.3275563258232235) internal successors, (766), 585 states have internal predecessors, (766), 73 states have call successors, (73), 30 states have call predecessors, (73), 41 states have return successors, (113), 76 states have call predecessors, (113), 69 states have call successors, (113) [2022-07-21 17:55:33,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 952 transitions. [2022-07-21 17:55:33,565 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 952 transitions. Word has length 50 [2022-07-21 17:55:33,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:33,566 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 952 transitions. [2022-07-21 17:55:33,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 17:55:33,566 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 952 transitions. [2022-07-21 17:55:33,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-21 17:55:33,567 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:33,567 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] [2022-07-21 17:55:33,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-21 17:55:33,568 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:33,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:33,568 INFO L85 PathProgramCache]: Analyzing trace with hash 721425391, now seen corresponding path program 1 times [2022-07-21 17:55:33,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:33,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336068733] [2022-07-21 17:55:33,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:33,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:33,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 17:55:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:33,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 17:55:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:33,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:33,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:33,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:33,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336068733] [2022-07-21 17:55:33,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336068733] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:33,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:33,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 17:55:33,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919378378] [2022-07-21 17:55:33,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:33,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 17:55:33,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:33,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 17:55:33,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-21 17:55:33,665 INFO L87 Difference]: Start difference. First operand 692 states and 952 transitions. Second operand has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 17:55:34,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:34,373 INFO L93 Difference]: Finished difference Result 753 states and 1044 transitions. [2022-07-21 17:55:34,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 17:55:34,373 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 51 [2022-07-21 17:55:34,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:34,383 INFO L225 Difference]: With dead ends: 753 [2022-07-21 17:55:34,383 INFO L226 Difference]: Without dead ends: 736 [2022-07-21 17:55:34,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-07-21 17:55:34,384 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 248 mSDsluCounter, 3683 mSDsCounter, 0 mSdLazyCounter, 1501 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 4193 SdHoareTripleChecker+Invalid, 1634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:34,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 4193 Invalid, 1634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1501 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 17:55:34,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-07-21 17:55:34,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 690. [2022-07-21 17:55:34,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 576 states have (on average 1.3263888888888888) internal successors, (764), 584 states have internal predecessors, (764), 72 states have call successors, (72), 30 states have call predecessors, (72), 41 states have return successors, (112), 75 states have call predecessors, (112), 68 states have call successors, (112) [2022-07-21 17:55:34,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 948 transitions. [2022-07-21 17:55:34,400 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 948 transitions. Word has length 51 [2022-07-21 17:55:34,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:34,400 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 948 transitions. [2022-07-21 17:55:34,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 17:55:34,400 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 948 transitions. [2022-07-21 17:55:34,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-21 17:55:34,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:34,421 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] [2022-07-21 17:55:34,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-21 17:55:34,421 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:34,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:34,424 INFO L85 PathProgramCache]: Analyzing trace with hash 618682838, now seen corresponding path program 1 times [2022-07-21 17:55:34,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:34,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601186977] [2022-07-21 17:55:34,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:34,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:34,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 17:55:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:34,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:34,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:34,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:34,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601186977] [2022-07-21 17:55:34,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601186977] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:34,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:34,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 17:55:34,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658275019] [2022-07-21 17:55:34,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:34,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 17:55:34,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:34,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 17:55:34,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-21 17:55:34,535 INFO L87 Difference]: Start difference. First operand 690 states and 948 transitions. Second operand has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:35,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:35,306 INFO L93 Difference]: Finished difference Result 735 states and 1023 transitions. [2022-07-21 17:55:35,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 17:55:35,306 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2022-07-21 17:55:35,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:35,309 INFO L225 Difference]: With dead ends: 735 [2022-07-21 17:55:35,309 INFO L226 Difference]: Without dead ends: 718 [2022-07-21 17:55:35,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-07-21 17:55:35,310 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 235 mSDsluCounter, 3716 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 4210 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:35,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 4210 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 17:55:35,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-07-21 17:55:35,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 688. [2022-07-21 17:55:35,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 575 states have (on average 1.325217391304348) internal successors, (762), 583 states have internal predecessors, (762), 71 states have call successors, (71), 30 states have call predecessors, (71), 41 states have return successors, (111), 74 states have call predecessors, (111), 67 states have call successors, (111) [2022-07-21 17:55:35,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 944 transitions. [2022-07-21 17:55:35,321 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 944 transitions. Word has length 48 [2022-07-21 17:55:35,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:35,321 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 944 transitions. [2022-07-21 17:55:35,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:35,321 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 944 transitions. [2022-07-21 17:55:35,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-21 17:55:35,323 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:35,323 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] [2022-07-21 17:55:35,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-21 17:55:35,323 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:35,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:35,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1166693008, now seen corresponding path program 1 times [2022-07-21 17:55:35,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:35,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424706489] [2022-07-21 17:55:35,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:35,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:35,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 17:55:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:35,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 17:55:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:35,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:35,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:35,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424706489] [2022-07-21 17:55:35,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424706489] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:35,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:35,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 17:55:35,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746232929] [2022-07-21 17:55:35,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:35,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:55:35,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:35,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:55:35,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:55:35,353 INFO L87 Difference]: Start difference. First operand 688 states and 944 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:35,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:35,596 INFO L93 Difference]: Finished difference Result 647 states and 868 transitions. [2022-07-21 17:55:35,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:55:35,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2022-07-21 17:55:35,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:35,598 INFO L225 Difference]: With dead ends: 647 [2022-07-21 17:55:35,598 INFO L226 Difference]: Without dead ends: 644 [2022-07-21 17:55:35,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:55:35,599 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 97 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:35,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 1554 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:35,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2022-07-21 17:55:35,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 615. [2022-07-21 17:55:35,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 518 states have (on average 1.3204633204633205) internal successors, (684), 524 states have internal predecessors, (684), 62 states have call successors, (62), 27 states have call predecessors, (62), 34 states have return successors, (75), 63 states have call predecessors, (75), 58 states have call successors, (75) [2022-07-21 17:55:35,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 821 transitions. [2022-07-21 17:55:35,605 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 821 transitions. Word has length 48 [2022-07-21 17:55:35,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:35,606 INFO L495 AbstractCegarLoop]: Abstraction has 615 states and 821 transitions. [2022-07-21 17:55:35,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:35,606 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 821 transitions. [2022-07-21 17:55:35,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-21 17:55:35,607 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:35,607 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] [2022-07-21 17:55:35,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-21 17:55:35,607 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:35,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:35,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1152872609, now seen corresponding path program 1 times [2022-07-21 17:55:35,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:35,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17024373] [2022-07-21 17:55:35,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:35,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:35,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 17:55:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:35,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:35,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:35,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:35,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17024373] [2022-07-21 17:55:35,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17024373] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:35,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:35,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 17:55:35,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93459401] [2022-07-21 17:55:35,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:35,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 17:55:35,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:35,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 17:55:35,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-21 17:55:35,726 INFO L87 Difference]: Start difference. First operand 615 states and 821 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:55:36,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:36,355 INFO L93 Difference]: Finished difference Result 640 states and 853 transitions. [2022-07-21 17:55:36,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 17:55:36,355 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2022-07-21 17:55:36,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:36,356 INFO L225 Difference]: With dead ends: 640 [2022-07-21 17:55:36,356 INFO L226 Difference]: Without dead ends: 625 [2022-07-21 17:55:36,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-07-21 17:55:36,357 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 116 mSDsluCounter, 3802 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 4294 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:36,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 4294 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 17:55:36,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2022-07-21 17:55:36,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 613. [2022-07-21 17:55:36,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 517 states have (on average 1.3191489361702127) internal successors, (682), 523 states have internal predecessors, (682), 61 states have call successors, (61), 27 states have call predecessors, (61), 34 states have return successors, (74), 62 states have call predecessors, (74), 57 states have call successors, (74) [2022-07-21 17:55:36,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 817 transitions. [2022-07-21 17:55:36,363 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 817 transitions. Word has length 57 [2022-07-21 17:55:36,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:36,363 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 817 transitions. [2022-07-21 17:55:36,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:55:36,364 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 817 transitions. [2022-07-21 17:55:36,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-21 17:55:36,365 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:36,365 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] [2022-07-21 17:55:36,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-21 17:55:36,365 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:36,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:36,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1985597816, now seen corresponding path program 1 times [2022-07-21 17:55:36,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:36,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486226423] [2022-07-21 17:55:36,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:36,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:36,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 17:55:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:36,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:36,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:36,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:36,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:36,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486226423] [2022-07-21 17:55:36,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486226423] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:36,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:36,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 17:55:36,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997276573] [2022-07-21 17:55:36,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:36,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 17:55:36,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:36,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 17:55:36,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-21 17:55:36,502 INFO L87 Difference]: Start difference. First operand 613 states and 817 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:55:36,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:36,996 INFO L93 Difference]: Finished difference Result 637 states and 848 transitions. [2022-07-21 17:55:36,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 17:55:36,996 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 48 [2022-07-21 17:55:36,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:37,001 INFO L225 Difference]: With dead ends: 637 [2022-07-21 17:55:37,001 INFO L226 Difference]: Without dead ends: 622 [2022-07-21 17:55:37,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-07-21 17:55:37,002 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 116 mSDsluCounter, 3755 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 4239 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:37,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 4239 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 17:55:37,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-07-21 17:55:37,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 610. [2022-07-21 17:55:37,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 515 states have (on average 1.3184466019417476) internal successors, (679), 521 states have internal predecessors, (679), 60 states have call successors, (60), 27 states have call predecessors, (60), 34 states have return successors, (73), 61 states have call predecessors, (73), 56 states have call successors, (73) [2022-07-21 17:55:37,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 812 transitions. [2022-07-21 17:55:37,012 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 812 transitions. Word has length 48 [2022-07-21 17:55:37,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:37,013 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 812 transitions. [2022-07-21 17:55:37,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:55:37,013 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 812 transitions. [2022-07-21 17:55:37,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-21 17:55:37,014 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:37,014 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] [2022-07-21 17:55:37,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-21 17:55:37,016 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:37,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:37,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1806708367, now seen corresponding path program 1 times [2022-07-21 17:55:37,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:37,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874195160] [2022-07-21 17:55:37,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:37,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:37,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 17:55:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:37,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 17:55:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:37,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:37,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:37,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874195160] [2022-07-21 17:55:37,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874195160] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:37,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:37,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:55:37,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544663600] [2022-07-21 17:55:37,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:37,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:55:37,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:37,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:55:37,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:55:37,064 INFO L87 Difference]: Start difference. First operand 610 states and 812 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:37,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:37,348 INFO L93 Difference]: Finished difference Result 678 states and 897 transitions. [2022-07-21 17:55:37,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:55:37,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2022-07-21 17:55:37,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:37,349 INFO L225 Difference]: With dead ends: 678 [2022-07-21 17:55:37,349 INFO L226 Difference]: Without dead ends: 678 [2022-07-21 17:55:37,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:55:37,350 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 334 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:37,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 2053 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 17:55:37,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2022-07-21 17:55:37,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 616. [2022-07-21 17:55:37,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 520 states have (on average 1.3173076923076923) internal successors, (685), 526 states have internal predecessors, (685), 61 states have call successors, (61), 27 states have call predecessors, (61), 34 states have return successors, (74), 62 states have call predecessors, (74), 57 states have call successors, (74) [2022-07-21 17:55:37,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 820 transitions. [2022-07-21 17:55:37,356 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 820 transitions. Word has length 50 [2022-07-21 17:55:37,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:37,357 INFO L495 AbstractCegarLoop]: Abstraction has 616 states and 820 transitions. [2022-07-21 17:55:37,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:37,357 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 820 transitions. [2022-07-21 17:55:37,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-21 17:55:37,358 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:37,358 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] [2022-07-21 17:55:37,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-21 17:55:37,358 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:37,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:37,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1801199632, now seen corresponding path program 1 times [2022-07-21 17:55:37,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:37,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467830736] [2022-07-21 17:55:37,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:37,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:37,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 17:55:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:37,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 17:55:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:37,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 17:55:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:37,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 17:55:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:37,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:37,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:37,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467830736] [2022-07-21 17:55:37,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467830736] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:37,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:37,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:55:37,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998430663] [2022-07-21 17:55:37,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:37,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:55:37,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:37,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:55:37,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:55:37,402 INFO L87 Difference]: Start difference. First operand 616 states and 820 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 17:55:37,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:37,723 INFO L93 Difference]: Finished difference Result 628 states and 837 transitions. [2022-07-21 17:55:37,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:55:37,724 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 53 [2022-07-21 17:55:37,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:37,725 INFO L225 Difference]: With dead ends: 628 [2022-07-21 17:55:37,725 INFO L226 Difference]: Without dead ends: 628 [2022-07-21 17:55:37,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:55:37,726 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 124 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:37,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1415 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 17:55:37,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-07-21 17:55:37,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 616. [2022-07-21 17:55:37,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 520 states have (on average 1.3134615384615385) internal successors, (683), 526 states have internal predecessors, (683), 61 states have call successors, (61), 27 states have call predecessors, (61), 34 states have return successors, (74), 62 states have call predecessors, (74), 57 states have call successors, (74) [2022-07-21 17:55:37,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 818 transitions. [2022-07-21 17:55:37,733 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 818 transitions. Word has length 53 [2022-07-21 17:55:37,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:37,734 INFO L495 AbstractCegarLoop]: Abstraction has 616 states and 818 transitions. [2022-07-21 17:55:37,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 17:55:37,734 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 818 transitions. [2022-07-21 17:55:37,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-21 17:55:37,736 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:37,736 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] [2022-07-21 17:55:37,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-21 17:55:37,737 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:37,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:37,737 INFO L85 PathProgramCache]: Analyzing trace with hash -261050894, now seen corresponding path program 1 times [2022-07-21 17:55:37,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:37,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689457011] [2022-07-21 17:55:37,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:37,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:37,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 17:55:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:37,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 17:55:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:37,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:37,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:37,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:37,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689457011] [2022-07-21 17:55:37,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689457011] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:37,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:37,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 17:55:37,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565949176] [2022-07-21 17:55:37,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:37,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 17:55:37,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:37,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 17:55:37,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-21 17:55:37,828 INFO L87 Difference]: Start difference. First operand 616 states and 818 transitions. Second operand has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 10 states have internal predecessors, (45), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 17:55:38,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:38,532 INFO L93 Difference]: Finished difference Result 643 states and 852 transitions. [2022-07-21 17:55:38,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 17:55:38,532 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 10 states have internal predecessors, (45), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2022-07-21 17:55:38,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:38,533 INFO L225 Difference]: With dead ends: 643 [2022-07-21 17:55:38,533 INFO L226 Difference]: Without dead ends: 626 [2022-07-21 17:55:38,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-07-21 17:55:38,534 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 325 mSDsluCounter, 3520 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 3993 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:38,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 3993 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 17:55:38,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2022-07-21 17:55:38,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 614. [2022-07-21 17:55:38,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 519 states have (on average 1.3121387283236994) internal successors, (681), 525 states have internal predecessors, (681), 60 states have call successors, (60), 27 states have call predecessors, (60), 34 states have return successors, (73), 61 states have call predecessors, (73), 56 states have call successors, (73) [2022-07-21 17:55:38,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 814 transitions. [2022-07-21 17:55:38,540 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 814 transitions. Word has length 52 [2022-07-21 17:55:38,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:38,540 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 814 transitions. [2022-07-21 17:55:38,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 10 states have internal predecessors, (45), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 17:55:38,540 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 814 transitions. [2022-07-21 17:55:38,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-21 17:55:38,541 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:38,541 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] [2022-07-21 17:55:38,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-21 17:55:38,541 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:38,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:38,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1698213256, now seen corresponding path program 1 times [2022-07-21 17:55:38,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:38,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557382487] [2022-07-21 17:55:38,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:38,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:38,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 17:55:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:38,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 17:55:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:38,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:38,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:38,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557382487] [2022-07-21 17:55:38,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557382487] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:38,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:38,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 17:55:38,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021524839] [2022-07-21 17:55:38,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:38,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 17:55:38,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:38,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 17:55:38,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:55:38,587 INFO L87 Difference]: Start difference. First operand 614 states and 814 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:38,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:38,911 INFO L93 Difference]: Finished difference Result 657 states and 870 transitions. [2022-07-21 17:55:38,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 17:55:38,912 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 51 [2022-07-21 17:55:38,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:38,913 INFO L225 Difference]: With dead ends: 657 [2022-07-21 17:55:38,913 INFO L226 Difference]: Without dead ends: 606 [2022-07-21 17:55:38,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-07-21 17:55:38,914 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 262 mSDsluCounter, 2289 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 2760 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:38,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 2760 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 17:55:38,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2022-07-21 17:55:38,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 587. [2022-07-21 17:55:38,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 497 states have (on average 1.2977867203219315) internal successors, (645), 503 states have internal predecessors, (645), 55 states have call successors, (55), 27 states have call predecessors, (55), 34 states have return successors, (67), 56 states have call predecessors, (67), 51 states have call successors, (67) [2022-07-21 17:55:38,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 767 transitions. [2022-07-21 17:55:38,920 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 767 transitions. Word has length 51 [2022-07-21 17:55:38,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:38,921 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 767 transitions. [2022-07-21 17:55:38,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:38,922 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 767 transitions. [2022-07-21 17:55:38,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-21 17:55:38,923 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:38,923 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] [2022-07-21 17:55:38,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-21 17:55:38,923 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:38,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:38,923 INFO L85 PathProgramCache]: Analyzing trace with hash 673526006, now seen corresponding path program 1 times [2022-07-21 17:55:38,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:38,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995248768] [2022-07-21 17:55:38,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:38,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:38,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 17:55:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:38,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 17:55:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:38,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:38,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:38,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995248768] [2022-07-21 17:55:38,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995248768] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:38,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:38,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:55:38,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220146564] [2022-07-21 17:55:38,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:38,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:55:38,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:38,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:55:38,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:55:38,963 INFO L87 Difference]: Start difference. First operand 587 states and 767 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:39,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:39,188 INFO L93 Difference]: Finished difference Result 593 states and 774 transitions. [2022-07-21 17:55:39,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:55:39,189 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 51 [2022-07-21 17:55:39,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:39,190 INFO L225 Difference]: With dead ends: 593 [2022-07-21 17:55:39,190 INFO L226 Difference]: Without dead ends: 593 [2022-07-21 17:55:39,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:55:39,191 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 98 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:39,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 1982 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:39,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-07-21 17:55:39,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 577. [2022-07-21 17:55:39,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 489 states have (on average 1.294478527607362) internal successors, (633), 495 states have internal predecessors, (633), 53 states have call successors, (53), 27 states have call predecessors, (53), 34 states have return successors, (65), 54 states have call predecessors, (65), 49 states have call successors, (65) [2022-07-21 17:55:39,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 751 transitions. [2022-07-21 17:55:39,197 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 751 transitions. Word has length 51 [2022-07-21 17:55:39,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:39,198 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 751 transitions. [2022-07-21 17:55:39,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:39,198 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 751 transitions. [2022-07-21 17:55:39,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-21 17:55:39,199 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:39,199 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] [2022-07-21 17:55:39,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-21 17:55:39,199 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:39,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:39,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1072773224, now seen corresponding path program 1 times [2022-07-21 17:55:39,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:39,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257851402] [2022-07-21 17:55:39,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:39,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:39,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 17:55:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:39,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 17:55:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:39,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:39,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:39,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257851402] [2022-07-21 17:55:39,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257851402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:39,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:39,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:55:39,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557252396] [2022-07-21 17:55:39,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:39,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:55:39,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:39,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:55:39,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:55:39,237 INFO L87 Difference]: Start difference. First operand 577 states and 751 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:39,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:39,418 INFO L93 Difference]: Finished difference Result 589 states and 768 transitions. [2022-07-21 17:55:39,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:55:39,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2022-07-21 17:55:39,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:39,419 INFO L225 Difference]: With dead ends: 589 [2022-07-21 17:55:39,420 INFO L226 Difference]: Without dead ends: 584 [2022-07-21 17:55:39,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:55:39,420 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 171 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:39,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 1738 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:39,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-07-21 17:55:39,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 572. [2022-07-21 17:55:39,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 485 states have (on average 1.2948453608247423) internal successors, (628), 491 states have internal predecessors, (628), 52 states have call successors, (52), 27 states have call predecessors, (52), 34 states have return successors, (64), 53 states have call predecessors, (64), 48 states have call successors, (64) [2022-07-21 17:55:39,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 744 transitions. [2022-07-21 17:55:39,436 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 744 transitions. Word has length 52 [2022-07-21 17:55:39,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:39,436 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 744 transitions. [2022-07-21 17:55:39,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:39,437 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 744 transitions. [2022-07-21 17:55:39,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-21 17:55:39,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:39,438 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] [2022-07-21 17:55:39,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-21 17:55:39,438 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:39,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:39,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1299527003, now seen corresponding path program 1 times [2022-07-21 17:55:39,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:39,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139015659] [2022-07-21 17:55:39,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:39,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:39,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 17:55:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:39,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:39,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:39,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:39,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139015659] [2022-07-21 17:55:39,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139015659] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:39,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:39,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 17:55:39,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406114199] [2022-07-21 17:55:39,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:39,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:55:39,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:39,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:55:39,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:55:39,473 INFO L87 Difference]: Start difference. First operand 572 states and 744 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:55:39,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:39,666 INFO L93 Difference]: Finished difference Result 681 states and 887 transitions. [2022-07-21 17:55:39,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:55:39,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 52 [2022-07-21 17:55:39,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:39,669 INFO L225 Difference]: With dead ends: 681 [2022-07-21 17:55:39,669 INFO L226 Difference]: Without dead ends: 681 [2022-07-21 17:55:39,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:55:39,670 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 217 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:39,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 1318 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:39,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-07-21 17:55:39,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 600. [2022-07-21 17:55:39,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 511 states have (on average 1.289628180039139) internal successors, (659), 517 states have internal predecessors, (659), 52 states have call successors, (52), 27 states have call predecessors, (52), 36 states have return successors, (66), 55 states have call predecessors, (66), 48 states have call successors, (66) [2022-07-21 17:55:39,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 777 transitions. [2022-07-21 17:55:39,677 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 777 transitions. Word has length 52 [2022-07-21 17:55:39,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:39,677 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 777 transitions. [2022-07-21 17:55:39,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:55:39,677 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 777 transitions. [2022-07-21 17:55:39,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-21 17:55:39,678 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:39,678 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] [2022-07-21 17:55:39,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-21 17:55:39,679 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:39,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:39,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2075413267, now seen corresponding path program 1 times [2022-07-21 17:55:39,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:39,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125143510] [2022-07-21 17:55:39,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:39,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:39,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 17:55:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:39,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:39,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:39,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:39,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125143510] [2022-07-21 17:55:39,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125143510] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:39,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:39,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:55:39,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981055594] [2022-07-21 17:55:39,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:39,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:55:39,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:39,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:55:39,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:55:39,732 INFO L87 Difference]: Start difference. First operand 600 states and 777 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:40,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:40,180 INFO L93 Difference]: Finished difference Result 679 states and 884 transitions. [2022-07-21 17:55:40,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 17:55:40,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 53 [2022-07-21 17:55:40,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:40,181 INFO L225 Difference]: With dead ends: 679 [2022-07-21 17:55:40,182 INFO L226 Difference]: Without dead ends: 679 [2022-07-21 17:55:40,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-07-21 17:55:40,182 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 712 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:40,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 1524 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 17:55:40,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-07-21 17:55:40,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 600. [2022-07-21 17:55:40,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 511 states have (on average 1.2876712328767124) internal successors, (658), 517 states have internal predecessors, (658), 52 states have call successors, (52), 27 states have call predecessors, (52), 36 states have return successors, (66), 55 states have call predecessors, (66), 48 states have call successors, (66) [2022-07-21 17:55:40,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 776 transitions. [2022-07-21 17:55:40,192 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 776 transitions. Word has length 53 [2022-07-21 17:55:40,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:40,192 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 776 transitions. [2022-07-21 17:55:40,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:40,192 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 776 transitions. [2022-07-21 17:55:40,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-21 17:55:40,193 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:40,193 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] [2022-07-21 17:55:40,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-21 17:55:40,193 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:40,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:40,194 INFO L85 PathProgramCache]: Analyzing trace with hash 726957118, now seen corresponding path program 1 times [2022-07-21 17:55:40,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:40,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948028320] [2022-07-21 17:55:40,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:40,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:40,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 17:55:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:40,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 17:55:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:40,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 17:55:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:40,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:40,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:40,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:40,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948028320] [2022-07-21 17:55:40,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948028320] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:40,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:40,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 17:55:40,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476387418] [2022-07-21 17:55:40,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:40,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 17:55:40,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:40,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 17:55:40,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-21 17:55:40,326 INFO L87 Difference]: Start difference. First operand 600 states and 776 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 10 states have internal predecessors, (50), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-21 17:55:41,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:41,077 INFO L93 Difference]: Finished difference Result 652 states and 840 transitions. [2022-07-21 17:55:41,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 17:55:41,078 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 10 states have internal predecessors, (50), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 59 [2022-07-21 17:55:41,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:41,079 INFO L225 Difference]: With dead ends: 652 [2022-07-21 17:55:41,079 INFO L226 Difference]: Without dead ends: 635 [2022-07-21 17:55:41,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-07-21 17:55:41,079 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 243 mSDsluCounter, 3596 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 4027 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:41,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 4027 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1604 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 17:55:41,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2022-07-21 17:55:41,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 598. [2022-07-21 17:55:41,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 510 states have (on average 1.2862745098039217) internal successors, (656), 516 states have internal predecessors, (656), 51 states have call successors, (51), 27 states have call predecessors, (51), 36 states have return successors, (65), 54 states have call predecessors, (65), 47 states have call successors, (65) [2022-07-21 17:55:41,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 772 transitions. [2022-07-21 17:55:41,085 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 772 transitions. Word has length 59 [2022-07-21 17:55:41,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:41,085 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 772 transitions. [2022-07-21 17:55:41,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 10 states have internal predecessors, (50), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-21 17:55:41,085 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 772 transitions. [2022-07-21 17:55:41,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-21 17:55:41,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:41,086 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] [2022-07-21 17:55:41,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-21 17:55:41,086 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:41,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:41,087 INFO L85 PathProgramCache]: Analyzing trace with hash -2135115312, now seen corresponding path program 1 times [2022-07-21 17:55:41,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:41,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175545685] [2022-07-21 17:55:41,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:41,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:41,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 17:55:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:41,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 17:55:41,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:41,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:41,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:41,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:41,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175545685] [2022-07-21 17:55:41,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175545685] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:41,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:41,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-21 17:55:41,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237347613] [2022-07-21 17:55:41,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:41,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 17:55:41,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:41,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 17:55:41,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-07-21 17:55:41,251 INFO L87 Difference]: Start difference. First operand 598 states and 772 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 17:55:41,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:41,775 INFO L93 Difference]: Finished difference Result 627 states and 808 transitions. [2022-07-21 17:55:41,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 17:55:41,776 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2022-07-21 17:55:41,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:41,777 INFO L225 Difference]: With dead ends: 627 [2022-07-21 17:55:41,777 INFO L226 Difference]: Without dead ends: 606 [2022-07-21 17:55:41,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2022-07-21 17:55:41,778 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 235 mSDsluCounter, 3444 mSDsCounter, 0 mSdLazyCounter, 1612 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 3852 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:41,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 3852 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1612 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 17:55:41,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2022-07-21 17:55:41,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 594. [2022-07-21 17:55:41,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 507 states have (on average 1.2859960552268244) internal successors, (652), 513 states have internal predecessors, (652), 50 states have call successors, (50), 27 states have call predecessors, (50), 36 states have return successors, (64), 53 states have call predecessors, (64), 46 states have call successors, (64) [2022-07-21 17:55:41,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 766 transitions. [2022-07-21 17:55:41,783 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 766 transitions. Word has length 55 [2022-07-21 17:55:41,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:41,784 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 766 transitions. [2022-07-21 17:55:41,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 17:55:41,784 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 766 transitions. [2022-07-21 17:55:41,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-21 17:55:41,785 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:41,785 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] [2022-07-21 17:55:41,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-21 17:55:41,785 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:41,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:41,786 INFO L85 PathProgramCache]: Analyzing trace with hash 538585810, now seen corresponding path program 1 times [2022-07-21 17:55:41,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:41,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060388636] [2022-07-21 17:55:41,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:41,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:41,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 17:55:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:41,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 17:55:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:41,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:41,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:41,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060388636] [2022-07-21 17:55:41,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060388636] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:41,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:41,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:55:41,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541202102] [2022-07-21 17:55:41,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:41,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:55:41,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:41,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:55:41,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:55:41,850 INFO L87 Difference]: Start difference. First operand 594 states and 766 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:42,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:42,062 INFO L93 Difference]: Finished difference Result 606 states and 783 transitions. [2022-07-21 17:55:42,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:55:42,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2022-07-21 17:55:42,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:42,064 INFO L225 Difference]: With dead ends: 606 [2022-07-21 17:55:42,064 INFO L226 Difference]: Without dead ends: 601 [2022-07-21 17:55:42,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:55:42,064 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 171 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:42,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 1662 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:42,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-07-21 17:55:42,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 589. [2022-07-21 17:55:42,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 503 states have (on average 1.286282306163022) internal successors, (647), 509 states have internal predecessors, (647), 49 states have call successors, (49), 27 states have call predecessors, (49), 36 states have return successors, (63), 52 states have call predecessors, (63), 45 states have call successors, (63) [2022-07-21 17:55:42,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 759 transitions. [2022-07-21 17:55:42,069 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 759 transitions. Word has length 54 [2022-07-21 17:55:42,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:42,069 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 759 transitions. [2022-07-21 17:55:42,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:42,070 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 759 transitions. [2022-07-21 17:55:42,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-21 17:55:42,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:42,070 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] [2022-07-21 17:55:42,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-21 17:55:42,071 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:42,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:42,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1724995102, now seen corresponding path program 1 times [2022-07-21 17:55:42,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:42,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333900347] [2022-07-21 17:55:42,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:42,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:42,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 17:55:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:42,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 17:55:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:42,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:42,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:42,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333900347] [2022-07-21 17:55:42,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333900347] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:42,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:42,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 17:55:42,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300867105] [2022-07-21 17:55:42,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:42,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 17:55:42,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:42,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 17:55:42,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 17:55:42,144 INFO L87 Difference]: Start difference. First operand 589 states and 759 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:42,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:42,490 INFO L93 Difference]: Finished difference Result 621 states and 799 transitions. [2022-07-21 17:55:42,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 17:55:42,490 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2022-07-21 17:55:42,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:42,492 INFO L225 Difference]: With dead ends: 621 [2022-07-21 17:55:42,492 INFO L226 Difference]: Without dead ends: 598 [2022-07-21 17:55:42,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-07-21 17:55:42,492 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 232 mSDsluCounter, 2644 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 3051 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:42,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 3051 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 17:55:42,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-07-21 17:55:42,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 586. [2022-07-21 17:55:42,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 501 states have (on average 1.2854291417165669) internal successors, (644), 507 states have internal predecessors, (644), 48 states have call successors, (48), 27 states have call predecessors, (48), 36 states have return successors, (62), 51 states have call predecessors, (62), 44 states have call successors, (62) [2022-07-21 17:55:42,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 754 transitions. [2022-07-21 17:55:42,499 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 754 transitions. Word has length 54 [2022-07-21 17:55:42,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:42,499 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 754 transitions. [2022-07-21 17:55:42,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:42,499 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 754 transitions. [2022-07-21 17:55:42,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-21 17:55:42,502 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:42,502 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] [2022-07-21 17:55:42,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-21 17:55:42,502 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:42,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:42,503 INFO L85 PathProgramCache]: Analyzing trace with hash -726384384, now seen corresponding path program 1 times [2022-07-21 17:55:42,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:42,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669683667] [2022-07-21 17:55:42,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:42,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:42,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 17:55:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:42,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:42,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:42,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:42,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669683667] [2022-07-21 17:55:42,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669683667] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:42,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:42,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:55:42,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276015846] [2022-07-21 17:55:42,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:42,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:55:42,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:42,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:55:42,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:55:42,577 INFO L87 Difference]: Start difference. First operand 586 states and 754 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:42,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:42,987 INFO L93 Difference]: Finished difference Result 665 states and 860 transitions. [2022-07-21 17:55:42,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 17:55:42,987 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2022-07-21 17:55:42,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:42,989 INFO L225 Difference]: With dead ends: 665 [2022-07-21 17:55:42,989 INFO L226 Difference]: Without dead ends: 665 [2022-07-21 17:55:42,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-21 17:55:42,990 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 688 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:42,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 1442 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 17:55:42,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-07-21 17:55:42,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 584. [2022-07-21 17:55:42,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 499 states have (on average 1.2845691382765532) internal successors, (641), 505 states have internal predecessors, (641), 48 states have call successors, (48), 27 states have call predecessors, (48), 36 states have return successors, (62), 51 states have call predecessors, (62), 44 states have call successors, (62) [2022-07-21 17:55:42,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 751 transitions. [2022-07-21 17:55:42,995 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 751 transitions. Word has length 54 [2022-07-21 17:55:42,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:42,996 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 751 transitions. [2022-07-21 17:55:42,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:42,996 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 751 transitions. [2022-07-21 17:55:42,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-21 17:55:42,997 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:42,997 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] [2022-07-21 17:55:42,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-07-21 17:55:42,997 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:42,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:42,997 INFO L85 PathProgramCache]: Analyzing trace with hash -726107554, now seen corresponding path program 1 times [2022-07-21 17:55:42,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:42,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713317221] [2022-07-21 17:55:42,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:42,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:43,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 17:55:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:43,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:43,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:43,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:43,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713317221] [2022-07-21 17:55:43,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713317221] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:43,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:43,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 17:55:43,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207876905] [2022-07-21 17:55:43,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:43,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 17:55:43,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:43,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 17:55:43,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 17:55:43,104 INFO L87 Difference]: Start difference. First operand 584 states and 751 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:55:43,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:43,629 INFO L93 Difference]: Finished difference Result 603 states and 775 transitions. [2022-07-21 17:55:43,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 17:55:43,630 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 54 [2022-07-21 17:55:43,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:43,631 INFO L225 Difference]: With dead ends: 603 [2022-07-21 17:55:43,631 INFO L226 Difference]: Without dead ends: 558 [2022-07-21 17:55:43,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-07-21 17:55:43,631 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 279 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:43,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 2499 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 17:55:43,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-07-21 17:55:43,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 542. [2022-07-21 17:55:43,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 459 states have (on average 1.2745098039215685) internal successors, (585), 465 states have internal predecessors, (585), 48 states have call successors, (48), 27 states have call predecessors, (48), 34 states have return successors, (60), 49 states have call predecessors, (60), 44 states have call successors, (60) [2022-07-21 17:55:43,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 693 transitions. [2022-07-21 17:55:43,637 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 693 transitions. Word has length 54 [2022-07-21 17:55:43,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:43,637 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 693 transitions. [2022-07-21 17:55:43,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:55:43,638 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 693 transitions. [2022-07-21 17:55:43,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-21 17:55:43,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:43,639 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] [2022-07-21 17:55:43,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-21 17:55:43,639 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:43,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:43,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1795419470, now seen corresponding path program 1 times [2022-07-21 17:55:43,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:43,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369375869] [2022-07-21 17:55:43,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:43,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:43,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 17:55:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:43,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 17:55:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:43,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:43,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:43,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:43,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369375869] [2022-07-21 17:55:43,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369375869] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:43,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:43,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 17:55:43,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778641240] [2022-07-21 17:55:43,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:43,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 17:55:43,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:43,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 17:55:43,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:55:43,682 INFO L87 Difference]: Start difference. First operand 542 states and 693 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:55:43,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:43,930 INFO L93 Difference]: Finished difference Result 572 states and 730 transitions. [2022-07-21 17:55:43,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:55:43,930 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 56 [2022-07-21 17:55:43,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:43,931 INFO L225 Difference]: With dead ends: 572 [2022-07-21 17:55:43,947 INFO L226 Difference]: Without dead ends: 572 [2022-07-21 17:55:43,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-21 17:55:43,947 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 178 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:43,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 1748 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:43,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-07-21 17:55:43,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 542. [2022-07-21 17:55:43,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 459 states have (on average 1.2723311546840959) internal successors, (584), 465 states have internal predecessors, (584), 48 states have call successors, (48), 27 states have call predecessors, (48), 34 states have return successors, (60), 49 states have call predecessors, (60), 44 states have call successors, (60) [2022-07-21 17:55:43,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 692 transitions. [2022-07-21 17:55:43,953 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 692 transitions. Word has length 56 [2022-07-21 17:55:43,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:43,953 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 692 transitions. [2022-07-21 17:55:43,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:55:43,954 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 692 transitions. [2022-07-21 17:55:43,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-21 17:55:43,954 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:43,955 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] [2022-07-21 17:55:43,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-21 17:55:43,955 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:43,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:43,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1818051724, now seen corresponding path program 1 times [2022-07-21 17:55:43,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:43,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267927644] [2022-07-21 17:55:43,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:43,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:44,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 17:55:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:44,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 17:55:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:44,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:44,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:44,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:44,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267927644] [2022-07-21 17:55:44,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267927644] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:44,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:44,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 17:55:44,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30307869] [2022-07-21 17:55:44,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:44,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 17:55:44,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:44,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 17:55:44,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-21 17:55:44,051 INFO L87 Difference]: Start difference. First operand 542 states and 692 transitions. Second operand has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 17:55:44,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:44,500 INFO L93 Difference]: Finished difference Result 594 states and 756 transitions. [2022-07-21 17:55:44,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 17:55:44,500 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2022-07-21 17:55:44,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:44,501 INFO L225 Difference]: With dead ends: 594 [2022-07-21 17:55:44,501 INFO L226 Difference]: Without dead ends: 567 [2022-07-21 17:55:44,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-07-21 17:55:44,502 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 266 mSDsluCounter, 2795 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 3198 SdHoareTripleChecker+Invalid, 1462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:44,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 3198 Invalid, 1462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 17:55:44,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-07-21 17:55:44,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 537. [2022-07-21 17:55:44,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 455 states have (on average 1.268131868131868) internal successors, (577), 461 states have internal predecessors, (577), 47 states have call successors, (47), 27 states have call predecessors, (47), 34 states have return successors, (58), 48 states have call predecessors, (58), 43 states have call successors, (58) [2022-07-21 17:55:44,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 682 transitions. [2022-07-21 17:55:44,507 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 682 transitions. Word has length 56 [2022-07-21 17:55:44,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:44,507 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 682 transitions. [2022-07-21 17:55:44,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 17:55:44,508 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 682 transitions. [2022-07-21 17:55:44,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-21 17:55:44,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:44,509 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] [2022-07-21 17:55:44,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-07-21 17:55:44,509 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:44,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:44,509 INFO L85 PathProgramCache]: Analyzing trace with hash -356987344, now seen corresponding path program 1 times [2022-07-21 17:55:44,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:44,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027307187] [2022-07-21 17:55:44,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:44,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:44,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 17:55:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:44,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 17:55:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:44,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:44,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:44,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:44,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027307187] [2022-07-21 17:55:44,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027307187] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:44,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:44,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 17:55:44,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706282867] [2022-07-21 17:55:44,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:44,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 17:55:44,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:44,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 17:55:44,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:55:44,556 INFO L87 Difference]: Start difference. First operand 537 states and 682 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:55:44,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:44,889 INFO L93 Difference]: Finished difference Result 549 states and 699 transitions. [2022-07-21 17:55:44,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:55:44,890 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 56 [2022-07-21 17:55:44,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:44,891 INFO L225 Difference]: With dead ends: 549 [2022-07-21 17:55:44,891 INFO L226 Difference]: Without dead ends: 543 [2022-07-21 17:55:44,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-21 17:55:44,892 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 159 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:44,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 1829 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 17:55:44,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-07-21 17:55:44,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 531. [2022-07-21 17:55:44,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 450 states have (on average 1.268888888888889) internal successors, (571), 456 states have internal predecessors, (571), 46 states have call successors, (46), 27 states have call predecessors, (46), 34 states have return successors, (57), 47 states have call predecessors, (57), 42 states have call successors, (57) [2022-07-21 17:55:44,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 674 transitions. [2022-07-21 17:55:44,900 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 674 transitions. Word has length 56 [2022-07-21 17:55:44,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:44,900 INFO L495 AbstractCegarLoop]: Abstraction has 531 states and 674 transitions. [2022-07-21 17:55:44,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:55:44,900 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 674 transitions. [2022-07-21 17:55:44,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-21 17:55:44,901 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:44,902 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] [2022-07-21 17:55:44,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-07-21 17:55:44,902 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:44,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:44,902 INFO L85 PathProgramCache]: Analyzing trace with hash -2107046685, now seen corresponding path program 1 times [2022-07-21 17:55:44,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:44,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704816366] [2022-07-21 17:55:44,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:44,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:44,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 17:55:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:44,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 17:55:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:44,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 17:55:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:45,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:45,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:45,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:45,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704816366] [2022-07-21 17:55:45,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704816366] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:45,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:45,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 17:55:45,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776205191] [2022-07-21 17:55:45,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:45,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 17:55:45,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:45,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 17:55:45,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-21 17:55:45,006 INFO L87 Difference]: Start difference. First operand 531 states and 674 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-21 17:55:45,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:45,614 INFO L93 Difference]: Finished difference Result 560 states and 710 transitions. [2022-07-21 17:55:45,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 17:55:45,615 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 62 [2022-07-21 17:55:45,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:45,616 INFO L225 Difference]: With dead ends: 560 [2022-07-21 17:55:45,616 INFO L226 Difference]: Without dead ends: 541 [2022-07-21 17:55:45,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-07-21 17:55:45,616 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 304 mSDsluCounter, 2574 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 2950 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:45,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 2950 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 17:55:45,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-07-21 17:55:45,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 529. [2022-07-21 17:55:45,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 448 states have (on average 1.2678571428571428) internal successors, (568), 454 states have internal predecessors, (568), 46 states have call successors, (46), 27 states have call predecessors, (46), 34 states have return successors, (57), 47 states have call predecessors, (57), 42 states have call successors, (57) [2022-07-21 17:55:45,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 671 transitions. [2022-07-21 17:55:45,621 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 671 transitions. Word has length 62 [2022-07-21 17:55:45,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:45,621 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 671 transitions. [2022-07-21 17:55:45,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-21 17:55:45,621 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 671 transitions. [2022-07-21 17:55:45,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-21 17:55:45,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:45,622 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] [2022-07-21 17:55:45,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-07-21 17:55:45,622 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:45,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:45,623 INFO L85 PathProgramCache]: Analyzing trace with hash -790506152, now seen corresponding path program 1 times [2022-07-21 17:55:45,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:45,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536405986] [2022-07-21 17:55:45,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:45,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:45,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 17:55:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:45,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 17:55:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:45,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 17:55:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:45,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:45,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:45,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:45,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536405986] [2022-07-21 17:55:45,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536405986] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:45,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:45,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 17:55:45,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857339] [2022-07-21 17:55:45,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:45,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 17:55:45,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:45,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 17:55:45,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:55:45,674 INFO L87 Difference]: Start difference. First operand 529 states and 671 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-21 17:55:45,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:45,999 INFO L93 Difference]: Finished difference Result 533 states and 675 transitions. [2022-07-21 17:55:46,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:55:46,000 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 63 [2022-07-21 17:55:46,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:46,001 INFO L225 Difference]: With dead ends: 533 [2022-07-21 17:55:46,001 INFO L226 Difference]: Without dead ends: 525 [2022-07-21 17:55:46,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-21 17:55:46,001 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 159 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:46,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 1693 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 17:55:46,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-07-21 17:55:46,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 513. [2022-07-21 17:55:46,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 435 states have (on average 1.264367816091954) internal successors, (550), 441 states have internal predecessors, (550), 43 states have call successors, (43), 27 states have call predecessors, (43), 34 states have return successors, (53), 44 states have call predecessors, (53), 39 states have call successors, (53) [2022-07-21 17:55:46,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 646 transitions. [2022-07-21 17:55:46,006 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 646 transitions. Word has length 63 [2022-07-21 17:55:46,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:46,006 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 646 transitions. [2022-07-21 17:55:46,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-21 17:55:46,006 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 646 transitions. [2022-07-21 17:55:46,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-21 17:55:46,007 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:46,007 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] [2022-07-21 17:55:46,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-07-21 17:55:46,007 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:46,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:46,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1208974705, now seen corresponding path program 1 times [2022-07-21 17:55:46,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:46,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668815869] [2022-07-21 17:55:46,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:46,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:46,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 17:55:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:46,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 17:55:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:46,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:46,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:46,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:46,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668815869] [2022-07-21 17:55:46,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668815869] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:46,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:46,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 17:55:46,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471275729] [2022-07-21 17:55:46,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:46,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 17:55:46,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:46,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 17:55:46,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:55:46,070 INFO L87 Difference]: Start difference. First operand 513 states and 646 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:55:46,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:46,387 INFO L93 Difference]: Finished difference Result 524 states and 660 transitions. [2022-07-21 17:55:46,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:55:46,387 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 58 [2022-07-21 17:55:46,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:46,389 INFO L225 Difference]: With dead ends: 524 [2022-07-21 17:55:46,389 INFO L226 Difference]: Without dead ends: 512 [2022-07-21 17:55:46,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-21 17:55:46,389 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 176 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:46,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 1452 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 17:55:46,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-07-21 17:55:46,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 500. [2022-07-21 17:55:46,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 423 states have (on average 1.260047281323877) internal successors, (533), 429 states have internal predecessors, (533), 42 states have call successors, (42), 27 states have call predecessors, (42), 34 states have return successors, (52), 43 states have call predecessors, (52), 38 states have call successors, (52) [2022-07-21 17:55:46,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 627 transitions. [2022-07-21 17:55:46,394 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 627 transitions. Word has length 58 [2022-07-21 17:55:46,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:46,394 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 627 transitions. [2022-07-21 17:55:46,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:55:46,395 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 627 transitions. [2022-07-21 17:55:46,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-21 17:55:46,395 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:46,396 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] [2022-07-21 17:55:46,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-07-21 17:55:46,396 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:46,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:46,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1375988349, now seen corresponding path program 1 times [2022-07-21 17:55:46,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:46,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786565311] [2022-07-21 17:55:46,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:46,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:46,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 17:55:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:46,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:46,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 17:55:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:46,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:46,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:46,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786565311] [2022-07-21 17:55:46,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786565311] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:46,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:46,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 17:55:46,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019039691] [2022-07-21 17:55:46,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:46,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 17:55:46,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:46,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 17:55:46,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-21 17:55:46,519 INFO L87 Difference]: Start difference. First operand 500 states and 627 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 17:55:47,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:47,620 INFO L93 Difference]: Finished difference Result 932 states and 1172 transitions. [2022-07-21 17:55:47,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-21 17:55:47,620 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2022-07-21 17:55:47,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:47,622 INFO L225 Difference]: With dead ends: 932 [2022-07-21 17:55:47,622 INFO L226 Difference]: Without dead ends: 903 [2022-07-21 17:55:47,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=253, Invalid=1153, Unknown=0, NotChecked=0, Total=1406 [2022-07-21 17:55:47,622 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 691 mSDsluCounter, 1935 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 2310 SdHoareTripleChecker+Invalid, 1518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:47,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 2310 Invalid, 1518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 17:55:47,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-07-21 17:55:47,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 694. [2022-07-21 17:55:47,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 583 states have (on average 1.2727272727272727) internal successors, (742), 595 states have internal predecessors, (742), 59 states have call successors, (59), 40 states have call predecessors, (59), 51 states have return successors, (77), 58 states have call predecessors, (77), 55 states have call successors, (77) [2022-07-21 17:55:47,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 878 transitions. [2022-07-21 17:55:47,629 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 878 transitions. Word has length 58 [2022-07-21 17:55:47,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:47,629 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 878 transitions. [2022-07-21 17:55:47,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 17:55:47,629 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 878 transitions. [2022-07-21 17:55:47,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-21 17:55:47,630 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:47,630 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] [2022-07-21 17:55:47,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-07-21 17:55:47,630 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:47,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:47,631 INFO L85 PathProgramCache]: Analyzing trace with hash -2042959941, now seen corresponding path program 1 times [2022-07-21 17:55:47,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:47,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649878940] [2022-07-21 17:55:47,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:47,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:47,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 17:55:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:47,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:47,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 17:55:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:47,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:47,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:47,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649878940] [2022-07-21 17:55:47,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649878940] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:47,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:47,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:55:47,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235366019] [2022-07-21 17:55:47,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:47,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:55:47,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:47,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:55:47,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:55:47,666 INFO L87 Difference]: Start difference. First operand 694 states and 878 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 17:55:48,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:48,090 INFO L93 Difference]: Finished difference Result 920 states and 1159 transitions. [2022-07-21 17:55:48,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 17:55:48,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2022-07-21 17:55:48,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:48,092 INFO L225 Difference]: With dead ends: 920 [2022-07-21 17:55:48,092 INFO L226 Difference]: Without dead ends: 920 [2022-07-21 17:55:48,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-07-21 17:55:48,092 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 1048 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:48,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 1669 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 17:55:48,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2022-07-21 17:55:48,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 513. [2022-07-21 17:55:48,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 435 states have (on average 1.2551724137931035) internal successors, (546), 440 states have internal predecessors, (546), 42 states have call successors, (42), 29 states have call predecessors, (42), 35 states have return successors, (52), 43 states have call predecessors, (52), 38 states have call successors, (52) [2022-07-21 17:55:48,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 640 transitions. [2022-07-21 17:55:48,098 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 640 transitions. Word has length 58 [2022-07-21 17:55:48,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:48,098 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 640 transitions. [2022-07-21 17:55:48,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 17:55:48,099 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 640 transitions. [2022-07-21 17:55:48,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-21 17:55:48,099 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:48,100 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] [2022-07-21 17:55:48,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-07-21 17:55:48,100 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:48,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:48,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1970957845, now seen corresponding path program 1 times [2022-07-21 17:55:48,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:48,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771236570] [2022-07-21 17:55:48,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:48,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:48,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 17:55:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:48,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 17:55:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:48,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 17:55:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:48,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:48,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:48,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:48,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771236570] [2022-07-21 17:55:48,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771236570] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:48,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:48,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 17:55:48,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217652933] [2022-07-21 17:55:48,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:48,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 17:55:48,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:48,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 17:55:48,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-21 17:55:48,201 INFO L87 Difference]: Start difference. First operand 513 states and 640 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 10 states have internal predecessors, (51), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-21 17:55:48,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:48,812 INFO L93 Difference]: Finished difference Result 539 states and 671 transitions. [2022-07-21 17:55:48,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 17:55:48,813 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 10 states have internal predecessors, (51), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 60 [2022-07-21 17:55:48,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:48,814 INFO L225 Difference]: With dead ends: 539 [2022-07-21 17:55:48,814 INFO L226 Difference]: Without dead ends: 504 [2022-07-21 17:55:48,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-07-21 17:55:48,814 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 218 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:48,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 2683 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 17:55:48,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-07-21 17:55:48,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 492. [2022-07-21 17:55:48,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 419 states have (on average 1.2553699284009547) internal successors, (526), 424 states have internal predecessors, (526), 38 states have call successors, (38), 28 states have call predecessors, (38), 34 states have return successors, (47), 39 states have call predecessors, (47), 34 states have call successors, (47) [2022-07-21 17:55:48,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 611 transitions. [2022-07-21 17:55:48,818 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 611 transitions. Word has length 60 [2022-07-21 17:55:48,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:48,818 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 611 transitions. [2022-07-21 17:55:48,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 10 states have internal predecessors, (51), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-21 17:55:48,819 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 611 transitions. [2022-07-21 17:55:48,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-21 17:55:48,819 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:48,819 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] [2022-07-21 17:55:48,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-07-21 17:55:48,819 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:48,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:48,820 INFO L85 PathProgramCache]: Analyzing trace with hash 789888525, now seen corresponding path program 1 times [2022-07-21 17:55:48,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:48,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943004041] [2022-07-21 17:55:48,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:48,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:48,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 17:55:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:48,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 17:55:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:48,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:48,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:48,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943004041] [2022-07-21 17:55:48,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943004041] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:48,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:48,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:55:48,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696685617] [2022-07-21 17:55:48,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:48,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:55:48,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:48,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:55:48,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:55:48,856 INFO L87 Difference]: Start difference. First operand 492 states and 611 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:49,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:49,027 INFO L93 Difference]: Finished difference Result 502 states and 623 transitions. [2022-07-21 17:55:49,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:55:49,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 58 [2022-07-21 17:55:49,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:49,028 INFO L225 Difference]: With dead ends: 502 [2022-07-21 17:55:49,028 INFO L226 Difference]: Without dead ends: 496 [2022-07-21 17:55:49,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:55:49,029 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 148 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:49,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 1228 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:49,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2022-07-21 17:55:49,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 484. [2022-07-21 17:55:49,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 412 states have (on average 1.2548543689320388) internal successors, (517), 417 states have internal predecessors, (517), 37 states have call successors, (37), 28 states have call predecessors, (37), 34 states have return successors, (45), 38 states have call predecessors, (45), 33 states have call successors, (45) [2022-07-21 17:55:49,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 599 transitions. [2022-07-21 17:55:49,034 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 599 transitions. Word has length 58 [2022-07-21 17:55:49,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:49,034 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 599 transitions. [2022-07-21 17:55:49,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:55:49,034 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 599 transitions. [2022-07-21 17:55:49,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-21 17:55:49,036 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:49,036 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 17:55:49,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-07-21 17:55:49,036 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:49,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:49,037 INFO L85 PathProgramCache]: Analyzing trace with hash -2051318318, now seen corresponding path program 1 times [2022-07-21 17:55:49,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:49,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288380941] [2022-07-21 17:55:49,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:49,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:49,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 17:55:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:49,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 17:55:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:49,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 17:55:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:49,076 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 17:55:49,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:49,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288380941] [2022-07-21 17:55:49,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288380941] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:49,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:49,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:55:49,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094578991] [2022-07-21 17:55:49,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:49,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:55:49,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:49,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:55:49,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:55:49,080 INFO L87 Difference]: Start difference. First operand 484 states and 599 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:55:49,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:49,255 INFO L93 Difference]: Finished difference Result 496 states and 614 transitions. [2022-07-21 17:55:49,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:55:49,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2022-07-21 17:55:49,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:49,257 INFO L225 Difference]: With dead ends: 496 [2022-07-21 17:55:49,257 INFO L226 Difference]: Without dead ends: 486 [2022-07-21 17:55:49,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:55:49,257 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 148 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:49,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 1193 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:49,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-07-21 17:55:49,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 474. [2022-07-21 17:55:49,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 404 states have (on average 1.254950495049505) internal successors, (507), 409 states have internal predecessors, (507), 35 states have call successors, (35), 28 states have call predecessors, (35), 34 states have return successors, (43), 36 states have call predecessors, (43), 31 states have call successors, (43) [2022-07-21 17:55:49,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 585 transitions. [2022-07-21 17:55:49,262 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 585 transitions. Word has length 60 [2022-07-21 17:55:49,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:49,262 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 585 transitions. [2022-07-21 17:55:49,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:55:49,262 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 585 transitions. [2022-07-21 17:55:49,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-21 17:55:49,263 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:49,263 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] [2022-07-21 17:55:49,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-07-21 17:55:49,264 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:49,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:49,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1819248512, now seen corresponding path program 1 times [2022-07-21 17:55:49,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:49,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469729271] [2022-07-21 17:55:49,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:49,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:49,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 17:55:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:49,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:49,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 17:55:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:49,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:49,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:49,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469729271] [2022-07-21 17:55:49,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469729271] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:49,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:49,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 17:55:49,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15005812] [2022-07-21 17:55:49,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:49,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 17:55:49,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:49,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 17:55:49,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-21 17:55:49,369 INFO L87 Difference]: Start difference. First operand 474 states and 585 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 17:55:50,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:50,051 INFO L93 Difference]: Finished difference Result 765 states and 956 transitions. [2022-07-21 17:55:50,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 17:55:50,051 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2022-07-21 17:55:50,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:50,052 INFO L225 Difference]: With dead ends: 765 [2022-07-21 17:55:50,052 INFO L226 Difference]: Without dead ends: 732 [2022-07-21 17:55:50,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-07-21 17:55:50,053 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 607 mSDsluCounter, 2393 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 2881 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:50,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 2881 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 17:55:50,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2022-07-21 17:55:50,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 368. [2022-07-21 17:55:50,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 310 states have (on average 1.270967741935484) internal successors, (394), 314 states have internal predecessors, (394), 30 states have call successors, (30), 24 states have call predecessors, (30), 27 states have return successors, (36), 29 states have call predecessors, (36), 27 states have call successors, (36) [2022-07-21 17:55:50,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 460 transitions. [2022-07-21 17:55:50,057 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 460 transitions. Word has length 60 [2022-07-21 17:55:50,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:50,057 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 460 transitions. [2022-07-21 17:55:50,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 17:55:50,057 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 460 transitions. [2022-07-21 17:55:50,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-21 17:55:50,058 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:50,058 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] [2022-07-21 17:55:50,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-07-21 17:55:50,058 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:50,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:50,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1463057072, now seen corresponding path program 1 times [2022-07-21 17:55:50,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:50,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603203878] [2022-07-21 17:55:50,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:50,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:50,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 17:55:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:50,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 17:55:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:50,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 17:55:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:50,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 17:55:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:50,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 17:55:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:50,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:50,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:50,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603203878] [2022-07-21 17:55:50,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603203878] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:50,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:50,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 17:55:50,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497733188] [2022-07-21 17:55:50,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:50,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 17:55:50,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:50,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 17:55:50,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 17:55:50,189 INFO L87 Difference]: Start difference. First operand 368 states and 460 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 17:55:50,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:50,458 INFO L93 Difference]: Finished difference Result 373 states and 465 transitions. [2022-07-21 17:55:50,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 17:55:50,458 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2022-07-21 17:55:50,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:50,459 INFO L225 Difference]: With dead ends: 373 [2022-07-21 17:55:50,459 INFO L226 Difference]: Without dead ends: 373 [2022-07-21 17:55:50,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-07-21 17:55:50,460 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 113 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:50,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 1209 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:50,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-07-21 17:55:50,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 361. [2022-07-21 17:55:50,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 303 states have (on average 1.2640264026402641) internal successors, (383), 307 states have internal predecessors, (383), 30 states have call successors, (30), 24 states have call predecessors, (30), 27 states have return successors, (36), 29 states have call predecessors, (36), 27 states have call successors, (36) [2022-07-21 17:55:50,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 449 transitions. [2022-07-21 17:55:50,475 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 449 transitions. Word has length 64 [2022-07-21 17:55:50,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:50,475 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 449 transitions. [2022-07-21 17:55:50,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 17:55:50,475 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 449 transitions. [2022-07-21 17:55:50,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-21 17:55:50,476 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:50,476 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 17:55:50,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-07-21 17:55:50,476 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:50,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:50,476 INFO L85 PathProgramCache]: Analyzing trace with hash 659665596, now seen corresponding path program 1 times [2022-07-21 17:55:50,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:50,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064102820] [2022-07-21 17:55:50,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:50,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:50,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 17:55:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:50,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 17:55:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:50,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 17:55:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:50,521 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 17:55:50,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:50,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064102820] [2022-07-21 17:55:50,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064102820] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:55:50,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215316966] [2022-07-21 17:55:50,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:50,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:55:50,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:55:50,524 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:55:50,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 17:55:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:50,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 17:55:50,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:55:50,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:50,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:55:50,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215316966] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:50,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 17:55:50,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-07-21 17:55:50,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450692110] [2022-07-21 17:55:50,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:50,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:55:50,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:50,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:55:50,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:55:50,742 INFO L87 Difference]: Start difference. First operand 361 states and 449 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:55:50,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:50,765 INFO L93 Difference]: Finished difference Result 346 states and 431 transitions. [2022-07-21 17:55:50,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:55:50,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 62 [2022-07-21 17:55:50,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:50,766 INFO L225 Difference]: With dead ends: 346 [2022-07-21 17:55:50,766 INFO L226 Difference]: Without dead ends: 332 [2022-07-21 17:55:50,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:55:50,767 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 0 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:50,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 917 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:55:50,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-07-21 17:55:50,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2022-07-21 17:55:50,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 280 states have (on average 1.275) internal successors, (357), 283 states have internal predecessors, (357), 27 states have call successors, (27), 22 states have call predecessors, (27), 24 states have return successors, (32), 26 states have call predecessors, (32), 24 states have call successors, (32) [2022-07-21 17:55:50,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 416 transitions. [2022-07-21 17:55:50,770 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 416 transitions. Word has length 62 [2022-07-21 17:55:50,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:50,770 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 416 transitions. [2022-07-21 17:55:50,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:55:50,770 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 416 transitions. [2022-07-21 17:55:50,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-21 17:55:50,771 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:50,771 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] [2022-07-21 17:55:50,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 17:55:50,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-07-21 17:55:50,987 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:50,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:50,988 INFO L85 PathProgramCache]: Analyzing trace with hash -747836141, now seen corresponding path program 1 times [2022-07-21 17:55:50,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:50,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099453491] [2022-07-21 17:55:50,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:50,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:51,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 17:55:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:51,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 17:55:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:51,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 17:55:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:51,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:51,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:51,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099453491] [2022-07-21 17:55:51,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099453491] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:51,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:51,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 17:55:51,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71038483] [2022-07-21 17:55:51,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:51,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 17:55:51,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:51,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 17:55:51,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-21 17:55:51,119 INFO L87 Difference]: Start difference. First operand 332 states and 416 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 17:55:51,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:51,583 INFO L93 Difference]: Finished difference Result 343 states and 430 transitions. [2022-07-21 17:55:51,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 17:55:51,584 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 64 [2022-07-21 17:55:51,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:51,584 INFO L225 Difference]: With dead ends: 343 [2022-07-21 17:55:51,584 INFO L226 Difference]: Without dead ends: 270 [2022-07-21 17:55:51,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-07-21 17:55:51,585 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 154 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1699 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:51,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1699 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 17:55:51,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-07-21 17:55:51,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 264. [2022-07-21 17:55:51,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 220 states have (on average 1.3) internal successors, (286), 222 states have internal predecessors, (286), 22 states have call successors, (22), 19 states have call predecessors, (22), 21 states have return successors, (28), 22 states have call predecessors, (28), 20 states have call successors, (28) [2022-07-21 17:55:51,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 336 transitions. [2022-07-21 17:55:51,587 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 336 transitions. Word has length 64 [2022-07-21 17:55:51,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:51,588 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 336 transitions. [2022-07-21 17:55:51,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 17:55:51,588 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 336 transitions. [2022-07-21 17:55:51,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 17:55:51,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:51,588 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] [2022-07-21 17:55:51,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-07-21 17:55:51,588 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:51,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:51,589 INFO L85 PathProgramCache]: Analyzing trace with hash 611039127, now seen corresponding path program 1 times [2022-07-21 17:55:51,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:51,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237604089] [2022-07-21 17:55:51,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:51,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:51,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 17:55:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:51,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 17:55:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:51,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 17:55:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:51,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 17:55:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:51,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 17:55:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:51,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 17:55:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:51,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:51,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:51,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237604089] [2022-07-21 17:55:51,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237604089] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:51,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:51,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 17:55:51,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066332675] [2022-07-21 17:55:51,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:51,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 17:55:51,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:51,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 17:55:51,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-21 17:55:51,674 INFO L87 Difference]: Start difference. First operand 264 states and 336 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-21 17:55:51,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:51,922 INFO L93 Difference]: Finished difference Result 270 states and 342 transitions. [2022-07-21 17:55:51,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 17:55:51,923 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 68 [2022-07-21 17:55:51,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:51,923 INFO L225 Difference]: With dead ends: 270 [2022-07-21 17:55:51,924 INFO L226 Difference]: Without dead ends: 270 [2022-07-21 17:55:51,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-07-21 17:55:51,924 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 192 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:51,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 799 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:51,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-07-21 17:55:51,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 264. [2022-07-21 17:55:51,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 220 states have (on average 1.2954545454545454) internal successors, (285), 222 states have internal predecessors, (285), 22 states have call successors, (22), 19 states have call predecessors, (22), 21 states have return successors, (28), 22 states have call predecessors, (28), 20 states have call successors, (28) [2022-07-21 17:55:51,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 335 transitions. [2022-07-21 17:55:51,927 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 335 transitions. Word has length 68 [2022-07-21 17:55:51,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:51,927 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 335 transitions. [2022-07-21 17:55:51,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-21 17:55:51,927 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 335 transitions. [2022-07-21 17:55:51,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-21 17:55:51,927 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:51,927 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] [2022-07-21 17:55:51,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-07-21 17:55:51,928 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:51,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:51,928 INFO L85 PathProgramCache]: Analyzing trace with hash -993138030, now seen corresponding path program 1 times [2022-07-21 17:55:51,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:51,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793549633] [2022-07-21 17:55:51,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:51,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:51,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 17:55:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:51,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 17:55:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:51,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 17:55:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:51,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 17:55:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:51,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 17:55:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:51,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 17:55:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:51,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:51,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:51,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793549633] [2022-07-21 17:55:51,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793549633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:51,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:51,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 17:55:51,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131197002] [2022-07-21 17:55:51,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:51,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 17:55:51,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:51,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 17:55:51,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:55:51,990 INFO L87 Difference]: Start difference. First operand 264 states and 335 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-21 17:55:52,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:52,150 INFO L93 Difference]: Finished difference Result 216 states and 264 transitions. [2022-07-21 17:55:52,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 17:55:52,150 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 70 [2022-07-21 17:55:52,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:52,151 INFO L225 Difference]: With dead ends: 216 [2022-07-21 17:55:52,151 INFO L226 Difference]: Without dead ends: 216 [2022-07-21 17:55:52,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-07-21 17:55:52,151 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 97 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:52,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 660 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:55:52,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-07-21 17:55:52,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 175. [2022-07-21 17:55:52,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 145 states have (on average 1.2344827586206897) internal successors, (179), 146 states have internal predecessors, (179), 15 states have call successors, (15), 13 states have call predecessors, (15), 14 states have return successors, (17), 15 states have call predecessors, (17), 14 states have call successors, (17) [2022-07-21 17:55:52,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 211 transitions. [2022-07-21 17:55:52,153 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 211 transitions. Word has length 70 [2022-07-21 17:55:52,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:52,153 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 211 transitions. [2022-07-21 17:55:52,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-21 17:55:52,153 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 211 transitions. [2022-07-21 17:55:52,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-21 17:55:52,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:52,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:52,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-07-21 17:55:52,154 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:52,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:52,154 INFO L85 PathProgramCache]: Analyzing trace with hash -365687255, now seen corresponding path program 1 times [2022-07-21 17:55:52,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:52,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459295809] [2022-07-21 17:55:52,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:52,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 17:55:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 17:55:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 17:55:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 17:55:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 17:55:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 17:55:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 17:55:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:52,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:52,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459295809] [2022-07-21 17:55:52,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459295809] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:52,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:52,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 17:55:52,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967198241] [2022-07-21 17:55:52,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:52,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 17:55:52,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:52,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 17:55:52,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-21 17:55:52,228 INFO L87 Difference]: Start difference. First operand 175 states and 211 transitions. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 17:55:52,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:52,442 INFO L93 Difference]: Finished difference Result 221 states and 263 transitions. [2022-07-21 17:55:52,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 17:55:52,442 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 84 [2022-07-21 17:55:52,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:52,443 INFO L225 Difference]: With dead ends: 221 [2022-07-21 17:55:52,443 INFO L226 Difference]: Without dead ends: 185 [2022-07-21 17:55:52,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2022-07-21 17:55:52,443 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 198 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:52,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 899 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:52,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-07-21 17:55:52,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 173. [2022-07-21 17:55:52,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 143 states have (on average 1.2027972027972027) internal successors, (172), 144 states have internal predecessors, (172), 15 states have call successors, (15), 13 states have call predecessors, (15), 14 states have return successors, (17), 15 states have call predecessors, (17), 14 states have call successors, (17) [2022-07-21 17:55:52,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 204 transitions. [2022-07-21 17:55:52,445 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 204 transitions. Word has length 84 [2022-07-21 17:55:52,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:52,445 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 204 transitions. [2022-07-21 17:55:52,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 17:55:52,445 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 204 transitions. [2022-07-21 17:55:52,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-21 17:55:52,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:52,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:52,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-07-21 17:55:52,446 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:52,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:52,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1430253116, now seen corresponding path program 1 times [2022-07-21 17:55:52,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:52,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086592187] [2022-07-21 17:55:52,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:52,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 17:55:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 17:55:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 17:55:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 17:55:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 17:55:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 17:55:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 17:55:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:52,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:52,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086592187] [2022-07-21 17:55:52,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086592187] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:52,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:52,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 17:55:52,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966682083] [2022-07-21 17:55:52,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:52,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 17:55:52,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:52,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 17:55:52,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-21 17:55:52,524 INFO L87 Difference]: Start difference. First operand 173 states and 204 transitions. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 17:55:52,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:52,710 INFO L93 Difference]: Finished difference Result 198 states and 231 transitions. [2022-07-21 17:55:52,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 17:55:52,710 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 86 [2022-07-21 17:55:52,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:52,711 INFO L225 Difference]: With dead ends: 198 [2022-07-21 17:55:52,711 INFO L226 Difference]: Without dead ends: 153 [2022-07-21 17:55:52,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-07-21 17:55:52,711 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 88 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:52,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 863 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:52,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-07-21 17:55:52,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 141. [2022-07-21 17:55:52,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 116 states have (on average 1.1637931034482758) internal successors, (135), 117 states have internal predecessors, (135), 12 states have call successors, (12), 11 states have call predecessors, (12), 12 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2022-07-21 17:55:52,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 160 transitions. [2022-07-21 17:55:52,713 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 160 transitions. Word has length 86 [2022-07-21 17:55:52,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:52,713 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 160 transitions. [2022-07-21 17:55:52,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 17:55:52,713 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 160 transitions. [2022-07-21 17:55:52,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-21 17:55:52,713 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:52,714 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:52,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-07-21 17:55:52,714 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:52,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:52,714 INFO L85 PathProgramCache]: Analyzing trace with hash -336818959, now seen corresponding path program 1 times [2022-07-21 17:55:52,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:52,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457265940] [2022-07-21 17:55:52,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:52,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 17:55:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 17:55:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 17:55:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 17:55:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 17:55:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 17:55:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 17:55:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 17:55:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 17:55:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,783 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 17:55:52,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:52,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457265940] [2022-07-21 17:55:52,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457265940] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:55:52,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835464465] [2022-07-21 17:55:52,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:52,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:55:52,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:55:52,785 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:55:52,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 17:55:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 17:55:52,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:55:52,927 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-21 17:55:52,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:55:52,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835464465] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:52,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 17:55:52,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-21 17:55:52,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273662389] [2022-07-21 17:55:52,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:52,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:55:52,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:52,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:55:52,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-21 17:55:52,928 INFO L87 Difference]: Start difference. First operand 141 states and 160 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 17:55:52,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:52,933 INFO L93 Difference]: Finished difference Result 170 states and 195 transitions. [2022-07-21 17:55:52,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:55:52,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 103 [2022-07-21 17:55:52,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:52,934 INFO L225 Difference]: With dead ends: 170 [2022-07-21 17:55:52,934 INFO L226 Difference]: Without dead ends: 170 [2022-07-21 17:55:52,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-21 17:55:52,935 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 16 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:52,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 236 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:55:52,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-07-21 17:55:52,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 151. [2022-07-21 17:55:52,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 125 states have (on average 1.152) internal successors, (144), 125 states have internal predecessors, (144), 13 states have call successors, (13), 11 states have call predecessors, (13), 12 states have return successors, (15), 14 states have call predecessors, (15), 12 states have call successors, (15) [2022-07-21 17:55:52,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 172 transitions. [2022-07-21 17:55:52,936 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 172 transitions. Word has length 103 [2022-07-21 17:55:52,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:52,937 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 172 transitions. [2022-07-21 17:55:52,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 17:55:52,937 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 172 transitions. [2022-07-21 17:55:52,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-21 17:55:52,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:52,937 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:52,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 17:55:53,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2022-07-21 17:55:53,155 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:53,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:53,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1586409075, now seen corresponding path program 1 times [2022-07-21 17:55:53,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:53,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046026762] [2022-07-21 17:55:53,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:53,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:53,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 17:55:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:53,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 17:55:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:53,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 17:55:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:53,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 17:55:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:53,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 17:55:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:53,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 17:55:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:53,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 17:55:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:53,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 17:55:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:53,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 17:55:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:53,226 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 17:55:53,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:53,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046026762] [2022-07-21 17:55:53,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046026762] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:55:53,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652613411] [2022-07-21 17:55:53,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:53,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:55:53,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:55:53,228 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:55:53,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 17:55:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:53,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 17:55:53,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:55:53,401 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 17:55:53,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:55:53,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652613411] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:53,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 17:55:53,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-07-21 17:55:53,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861677915] [2022-07-21 17:55:53,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:53,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:55:53,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:53,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:55:53,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-21 17:55:53,403 INFO L87 Difference]: Start difference. First operand 151 states and 172 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 17:55:53,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:53,476 INFO L93 Difference]: Finished difference Result 151 states and 170 transitions. [2022-07-21 17:55:53,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 17:55:53,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 103 [2022-07-21 17:55:53,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:53,477 INFO L225 Difference]: With dead ends: 151 [2022-07-21 17:55:53,477 INFO L226 Difference]: Without dead ends: 151 [2022-07-21 17:55:53,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-07-21 17:55:53,477 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 144 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:53,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 214 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:55:53,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-07-21 17:55:53,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-07-21 17:55:53,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 125 states have (on average 1.136) internal successors, (142), 125 states have internal predecessors, (142), 13 states have call successors, (13), 11 states have call predecessors, (13), 12 states have return successors, (15), 14 states have call predecessors, (15), 12 states have call successors, (15) [2022-07-21 17:55:53,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 170 transitions. [2022-07-21 17:55:53,480 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 170 transitions. Word has length 103 [2022-07-21 17:55:53,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:53,480 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 170 transitions. [2022-07-21 17:55:53,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 17:55:53,480 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 170 transitions. [2022-07-21 17:55:53,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-21 17:55:53,481 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:53,481 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:53,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 17:55:53,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:55:53,699 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:53,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:53,701 INFO L85 PathProgramCache]: Analyzing trace with hash 631465488, now seen corresponding path program 1 times [2022-07-21 17:55:53,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:53,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80084005] [2022-07-21 17:55:53,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:53,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:53,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 17:55:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:53,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 17:55:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:53,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 17:55:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:53,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 17:55:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:53,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 17:55:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:53,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 17:55:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:53,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 17:55:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:53,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 17:55:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:53,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 17:55:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:53,806 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 17:55:53,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:53,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80084005] [2022-07-21 17:55:53,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80084005] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:53,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:53,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 17:55:53,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187210712] [2022-07-21 17:55:53,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:53,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 17:55:53,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:53,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 17:55:53,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-21 17:55:53,807 INFO L87 Difference]: Start difference. First operand 151 states and 170 transitions. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 17:55:54,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:54,088 INFO L93 Difference]: Finished difference Result 259 states and 285 transitions. [2022-07-21 17:55:54,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 17:55:54,088 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 104 [2022-07-21 17:55:54,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:54,089 INFO L225 Difference]: With dead ends: 259 [2022-07-21 17:55:54,089 INFO L226 Difference]: Without dead ends: 151 [2022-07-21 17:55:54,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2022-07-21 17:55:54,089 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 205 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:54,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 644 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:54,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-07-21 17:55:54,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-07-21 17:55:54,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 125 states have (on average 1.128) internal successors, (141), 125 states have internal predecessors, (141), 13 states have call successors, (13), 11 states have call predecessors, (13), 12 states have return successors, (15), 14 states have call predecessors, (15), 12 states have call successors, (15) [2022-07-21 17:55:54,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 169 transitions. [2022-07-21 17:55:54,091 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 169 transitions. Word has length 104 [2022-07-21 17:55:54,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:54,091 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 169 transitions. [2022-07-21 17:55:54,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 17:55:54,091 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 169 transitions. [2022-07-21 17:55:54,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-21 17:55:54,092 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:54,092 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:54,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-07-21 17:55:54,092 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:54,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:54,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1542761419, now seen corresponding path program 1 times [2022-07-21 17:55:54,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:54,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156031316] [2022-07-21 17:55:54,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:54,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:54,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 17:55:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:54,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 17:55:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:54,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 17:55:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:54,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 17:55:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:54,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 17:55:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:54,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 17:55:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:54,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 17:55:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:54,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 17:55:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:54,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 17:55:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:54,174 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 17:55:54,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:54,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156031316] [2022-07-21 17:55:54,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156031316] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:54,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:54,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 17:55:54,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810820362] [2022-07-21 17:55:54,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:54,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 17:55:54,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:54,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 17:55:54,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:55:54,176 INFO L87 Difference]: Start difference. First operand 151 states and 169 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 17:55:54,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:54,313 INFO L93 Difference]: Finished difference Result 170 states and 188 transitions. [2022-07-21 17:55:54,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:55:54,313 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 104 [2022-07-21 17:55:54,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:54,314 INFO L225 Difference]: With dead ends: 170 [2022-07-21 17:55:54,314 INFO L226 Difference]: Without dead ends: 170 [2022-07-21 17:55:54,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:55:54,315 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 92 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:54,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 487 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:55:54,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-07-21 17:55:54,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 151. [2022-07-21 17:55:54,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 125 states have (on average 1.096) internal successors, (137), 125 states have internal predecessors, (137), 13 states have call successors, (13), 11 states have call predecessors, (13), 12 states have return successors, (15), 14 states have call predecessors, (15), 12 states have call successors, (15) [2022-07-21 17:55:54,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 165 transitions. [2022-07-21 17:55:54,317 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 165 transitions. Word has length 104 [2022-07-21 17:55:54,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:54,317 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 165 transitions. [2022-07-21 17:55:54,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 17:55:54,317 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 165 transitions. [2022-07-21 17:55:54,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-21 17:55:54,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:54,318 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:54,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-07-21 17:55:54,318 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:54,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:54,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1766005042, now seen corresponding path program 1 times [2022-07-21 17:55:54,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:54,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025381924] [2022-07-21 17:55:54,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:54,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:54,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 17:55:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:54,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 17:55:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:54,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 17:55:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:54,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 17:55:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:54,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 17:55:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:54,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 17:55:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:54,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 17:55:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:54,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 17:55:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:54,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 17:55:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:54,425 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 17:55:54,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:54,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025381924] [2022-07-21 17:55:54,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025381924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:54,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:54,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 17:55:54,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252789095] [2022-07-21 17:55:54,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:54,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 17:55:54,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:54,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 17:55:54,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-21 17:55:54,426 INFO L87 Difference]: Start difference. First operand 151 states and 165 transitions. Second operand has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 17:55:54,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:54,703 INFO L93 Difference]: Finished difference Result 148 states and 162 transitions. [2022-07-21 17:55:54,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 17:55:54,703 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 104 [2022-07-21 17:55:54,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:54,704 INFO L225 Difference]: With dead ends: 148 [2022-07-21 17:55:54,704 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 17:55:54,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2022-07-21 17:55:54,704 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 189 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:54,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 633 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:54,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 17:55:54,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 17:55:54,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-07-21 17:55:54,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 17:55:54,705 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 104 [2022-07-21 17:55:54,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:54,705 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 17:55:54,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 17:55:54,705 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 17:55:54,705 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 17:55:54,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2022-07-21 17:55:54,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2022-07-21 17:55:54,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-07-21 17:55:54,709 INFO L356 BasicCegarLoop]: Path program 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] [2022-07-21 17:55:54,710 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 17:55:54,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 05:55:54 BoogieIcfgContainer [2022-07-21 17:55:54,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 17:55:54,712 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 17:55:54,712 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 17:55:54,712 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 17:55:54,712 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:55:21" (3/4) ... [2022-07-21 17:55:54,713 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 17:55:54,718 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure SendSrbSynchronous [2022-07-21 17:55:54,718 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeSetEvent [2022-07-21 17:55:54,718 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure CdAudioSignalCompletion [2022-07-21 17:55:54,718 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure AG_SetStatusAndReturn [2022-07-21 17:55:54,718 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2022-07-21 17:55:54,718 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2022-07-21 17:55:54,718 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stubMoreProcessingRequired [2022-07-21 17:55:54,718 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure CdAudioSendToNextDriver [2022-07-21 17:55:54,718 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure CdAudioIsPlayActive [2022-07-21 17:55:54,719 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeWaitForSingleObject [2022-07-21 17:55:54,719 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCompleteRequest [2022-07-21 17:55:54,719 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure CdAudioForwardIrpSynchronous [2022-07-21 17:55:54,719 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure HPCdrCompletion [2022-07-21 17:55:54,732 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 60 nodes and edges [2022-07-21 17:55:54,734 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2022-07-21 17:55:54,736 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-21 17:55:54,737 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 17:55:54,830 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 17:55:54,830 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 17:55:54,830 INFO L158 Benchmark]: Toolchain (without parser) took 34816.41ms. Allocated memory was 65.0MB in the beginning and 381.7MB in the end (delta: 316.7MB). Free memory was 43.9MB in the beginning and 252.3MB in the end (delta: -208.4MB). Peak memory consumption was 107.9MB. Max. memory is 16.1GB. [2022-07-21 17:55:54,832 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 65.0MB. Free memory was 47.6MB in the beginning and 47.5MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 17:55:54,832 INFO L158 Benchmark]: CACSL2BoogieTranslator took 407.27ms. Allocated memory is still 65.0MB. Free memory was 43.6MB in the beginning and 31.7MB in the end (delta: 11.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-07-21 17:55:54,834 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.01ms. Allocated memory was 65.0MB in the beginning and 92.3MB in the end (delta: 27.3MB). Free memory was 31.5MB in the beginning and 68.6MB in the end (delta: -37.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-21 17:55:54,836 INFO L158 Benchmark]: Boogie Preprocessor took 93.07ms. Allocated memory is still 92.3MB. Free memory was 68.6MB in the beginning and 63.8MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-21 17:55:54,837 INFO L158 Benchmark]: RCFGBuilder took 935.94ms. Allocated memory is still 92.3MB. Free memory was 63.8MB in the beginning and 63.0MB in the end (delta: 801.8kB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2022-07-21 17:55:54,837 INFO L158 Benchmark]: TraceAbstraction took 33178.59ms. Allocated memory was 92.3MB in the beginning and 381.7MB in the end (delta: 289.4MB). Free memory was 62.6MB in the beginning and 276.4MB in the end (delta: -213.8MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. [2022-07-21 17:55:54,837 INFO L158 Benchmark]: Witness Printer took 118.35ms. Allocated memory is still 381.7MB. Free memory was 276.4MB in the beginning and 252.3MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-07-21 17:55:54,837 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 65.0MB. Free memory was 47.6MB in the beginning and 47.5MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 407.27ms. Allocated memory is still 65.0MB. Free memory was 43.6MB in the beginning and 31.7MB in the end (delta: 11.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.01ms. Allocated memory was 65.0MB in the beginning and 92.3MB in the end (delta: 27.3MB). Free memory was 31.5MB in the beginning and 68.6MB in the end (delta: -37.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 93.07ms. Allocated memory is still 92.3MB. Free memory was 68.6MB in the beginning and 63.8MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 935.94ms. Allocated memory is still 92.3MB. Free memory was 63.8MB in the beginning and 63.0MB in the end (delta: 801.8kB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. * TraceAbstraction took 33178.59ms. Allocated memory was 92.3MB in the beginning and 381.7MB in the end (delta: 289.4MB). Free memory was 62.6MB in the beginning and 276.4MB in the end (delta: -213.8MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. * Witness Printer took 118.35ms. Allocated memory is still 381.7MB. Free memory was 276.4MB in the beginning and 252.3MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 59]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1717]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 14 procedures, 469 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 33.1s, OverallIterations: 77, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 25.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22697 SdHoareTripleChecker+Valid, 21.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22230 mSDsluCounter, 166328 SdHoareTripleChecker+Invalid, 18.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 129175 mSDsCounter, 5921 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 45033 IncrementalHoareTripleChecker+Invalid, 50954 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5921 mSolverCounterUnsat, 37153 mSDtfsCounter, 45033 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1473 GetRequests, 685 SyntacticMatches, 4 SemanticMatches, 784 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1045 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1065occurred in iteration=10, InterpolantAutomatonStates: 685, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 77 MinimizatonAttempts, 3219 StatesRemovedByMinimization, 69 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 4160 NumberOfCodeBlocks, 4160 NumberOfCodeBlocksAsserted, 80 NumberOfCheckSat, 4080 ConstructedInterpolants, 0 QuantifiedInterpolants, 10477 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1664 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 80 InterpolantComputations, 77 PerfectInterpolantSequences, 71/85 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-21 17:55:54,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE